treatments-xml/data/81/84/BE/8184BE54567FCC0A846E38F53069BA04.xml

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<mods:title id="ADDBB4AFADF0170704D8C8615D20767A">A new species of Halicyclops (Copepoda, Cyclopoida, Cyclopidae) from a lagoon system of the Caribbean coast of Colombia</mods:title>
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<mods:namePart id="37073A57C0B37AF2FB13EC91D0982E5F">Suarez-Morales, Eduardo</mods:namePart>
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<mods:namePart id="0324F576E9A4583CCFDC007C5E4CD164">Fuentes-Reines, Juan M.</mods:namePart>
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<paragraph id="8BE3CA18304B8BDF351B5228EDBF4D98" pageId="1" pageNumber="36">Taxon classification Animalia Cyclopoida Cyclopidae</paragraph>
</subSubSection>
<subSubSection id="5D27C0DDA0A30774AFD8D5A79CA3112B" pageId="1" pageNumber="36" type="nomenclature">
<paragraph id="231993EDE96068DCC12105C03B266A96" pageId="1" pageNumber="36">
<taxonomicName id="09453838D5B6E1E9293E5173ADA438F1" ID-CoL="3JDFJ" LSID="http://zoobank.org/6F89C13E-501E-4CAE-82FA-89D435118FCD" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="1" pageNumber="36" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
<taxonomicNameLabel id="23D426071A5F87133602AF0BDA6442B1" pageId="1" pageNumber="36">sp. n.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="CDCDD46E71B76FFD69FA654D9C81F40C" pageId="1" pageNumber="36" type="material examined">
<paragraph id="4A7DA0A30395DC41B3818DDB950B8E47" pageId="1" pageNumber="36">Material examined.</paragraph>
<paragraph id="6B007FCFB272962F39C301168002254E" pageId="1" pageNumber="36">
Adult female holotype (UARC393Z), Laguna 
<normalizedToken id="3C9984E820F0F24DC16BC33E75DE20DC" originalValue="Navío">Navio</normalizedToken>
Quebrado, Colombia, limnetic plankton sample, 7 N., 2007, coll. Juan M. 
<normalizedToken id="E5C84381E838E8B7BB834AAC03A1893A" originalValue="Fuentes-Reinés">Fuentes-Reines</normalizedToken>
. Male allotype (UARC394Z), both partially dissected. Paratypes: ten females and four males, undissected, ethanol-preserved, vial (UARC395Z), plus one dissected female, slides (UARC399Z-403Z) and one dissected male (UARC397Z). Three adult females from same locality and date, two of them undissected, ethanol-preserved, in vial, one mounted on slide (ECO-CHZ-09267).
</paragraph>
</subSubSection>
<subSubSection id="C7D7A9B0E381697863B9877C2CBD61AB" pageId="1" pageNumber="36" type="type locality">
<paragraph id="22C8D3FDF4C8BA5150CAAB5B7C62889A" pageId="1" pageNumber="36">Type locality.</paragraph>
<paragraph id="538159A8B53571ADFEA99CD72CD4E7A6" pageId="1" pageNumber="36">
Laguna 
<normalizedToken id="EABEBA558ECE216B905143E444D2F20E" originalValue="Navío">Navio</normalizedToken>
Quebrado, La Guajira, northern Colombia (
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; 
<geoCoordinate id="5859D01933649E0EEC8C781289B120FB" direction="west" orientation="longitude" precision="925" value="-73.083336">73°5'W</geoCoordinate>
).
</paragraph>
</subSubSection>
<subSubSection id="4109A32DF9C8D463725EE6DBB7F194D1" lastPageId="3" lastPageNumber="38" pageId="1" pageNumber="36" type="description of female">
<paragraph id="6602A1BD483B227F3C5665B0D2A1A685" pageId="1" pageNumber="36">Description of female.</paragraph>
<paragraph id="A538825FA83D98A4A7789716CB2857D5" pageId="1" pageNumber="36">
Habitus in dorsal position as in Figure 1A, body wide, robust in the anterior part, rostrum subtriangular. Body length, excluding caudal setae, 560-602 
<normalizedToken id="50D9AC03C35884E747D70814AFEFCDB4" originalValue="μm">μm</normalizedToken>
(average = 581 
<normalizedToken id="BBC5F00619E1835C8C8D2D213DEB5E50" originalValue="μm">μm</normalizedToken>
; n= 10; holotype: 574 
<normalizedToken id="09DA4F0BF96069A78DBD85AA3525A37E" originalValue="μm">μm</normalizedToken>
). Rostrum strong, subtriangular (Fig. 1D). Labrum represented by widely rounded fig ornamented with marginal rows of spinules at both sides of teeth. Labrum armed with 10-12 teeth of different sizes, outermost being largest (Fig. 1C).
</paragraph>
<paragraph id="D59752A9089AFE9E6C7F7443E4AF99C3" lastPageId="2" lastPageNumber="37" pageId="1" pageNumber="36">
Cephalosome with large rounded dorsal integumental window. Urosome with four segments, genital double somite as long as wide with slight lateral protrusion at halflength and rounded integumental window on each side of posterior half (Fig. 3A). Seminal receptacle as shown in Fig. 3C, anal pseudoperculum, formed by slightly curved expansion of hyaline frill, posterior margin with irregularly serrate pattern (Fig. 3B) with adjacent rows of minute spinules. Caudal ramus about 1.2 as long as wide, outer seta III 1.4 times as long as ramus, apical seta V about twice time as long as seta IV (Fig. 1A), latter caudal seta with heteronomous ornamentation, with inner 
<pageBreakToken id="E85BE13D5A707CF952B84D515E236EA1" pageId="2" pageNumber="37" start="start">margin</pageBreakToken>
spinulated, outer margin with setules (Fig. 3D). Dorsal caudal seta (VII) 2.4 times as long as ramus.
</paragraph>
<paragraph id="EC9D83CD22EDC8C3DE42D98F604C7ABD" pageId="3" pageNumber="38">
<pageBreakToken id="458DB0FA36FF0C6853864229E05460A7" pageId="3" pageNumber="38" start="start">Antennules</pageBreakToken>
6-segmented, setal formula as follows, s=setae, ae=aesthetasc: 1(8s), 2(12s), 3(3s), 4(5s), 5(3+ae), 6(10+ae); fourth segment about 1.7 times as long as wide (Fig. 1B).
</paragraph>
<paragraph id="28630B0705FAFA9FC4E064237BCBF60A" pageId="3" pageNumber="38">Antenna consisting of 4 segments, coxa reduced and unarmed, basis with 2 setae at inner corner; seta representing EXP present. ENP two-segmented. Proximal endopodal segment with a seta on middle inner margin. Terminal endopodal segment about 1.4 times as long as preceding segment armed with 5 inner setae and 7 apical setae plus short spinule on proximal outer margin. Length/wide ratio of second segment about 2.3 (Fig. 1E).</paragraph>
<paragraph id="B703B8591832B86B1F7EC6A893199E13" pageId="3" pageNumber="38">Mandible with well-developed coxal gnathobase, armed with 7 teeth plus outermost dorsal pinnate seta. Palp reduced, represented by 2 naked setae inserted on small protuberance, one seta about 1/3 times as long as the other one (Fig. 1F)</paragraph>
<paragraph id="4C5526D5A6888B336C7202AC27635678" pageId="3" pageNumber="38">Maxillule with praecoxal arthrite bearing four strong tooth-like spines distally, inner spine strongest, with two proximal subequal setae, inner surface with two robust setal elements and one regular seta. Palp two-segmented, basis with 4 setae, endopodite represented by single oval-shaped segment, armed with three subequal, lightly setulated setae (Fig. 1G).</paragraph>
<paragraph id="CF5297076FE977EABAF998E240E84406" pageId="3" pageNumber="38">Maxilla 4-segmented, comprising praecoxa, coxa, basis and 1-segmented endopod. Praecoxal endite robust, armed with 3 setae and 2 spiniform elements on inner margin, with distal set of four robust claw-like spines. Basis with three elements including a claw-like spine, one naked stout seta and a short slender seta, exopod represented by single proximal seta. Endopod with 3 setae (Fig. 1H).</paragraph>
<paragraph id="21C60C2931C7404E68F3730AE2D4CBCB" pageId="3" pageNumber="38">Maxilliped 2-segmented, armed with 3 setal elements on basal segment and 5 setae on distal segment, one of them subdistal, two distal (Fig. 1I).</paragraph>
<paragraph id="FFBF7DF368816B38BE958D8CD17B85D1" pageId="3" pageNumber="38">
P1-P4 exopod and endopod 3-segmented (Fig. 2 
<normalizedToken id="BA376AD95EF2C9E504A85DF104224CFA" originalValue="A–D">A-D</normalizedToken>
), armed as in Table 1. Spine inserted at inner corner of P1 basis reaching distal margin of second endopodal segment of P1 (Fig. 2A). EXP/inner spines of P1 basis ratio = 1.63. P2-P3 similar each other (Fig. 2B, C). Outer basipodal seta present in P1, P3 and P4, absent in P2. P4ENP3 about 1.7 times as long as wide, with four pinnate spines (I-IV) and inner lateral seta (arrowed in Fig. 2E), inner apical spine (III in Fig. 2E) as long as segment and 1.4 times as long as outer apical spine (II). Inner lateral spine (IV) 1.5 times as long as segment. Inner lateral seta spiniform, ornamented with short stiff setules.
</paragraph>
<paragraph id="E4BB69473CBF4504124A866DB0199670" pageId="3" pageNumber="38">P5 exopod subrectangular (Fig. 3E), about 1.56 times as long as wide, armed with 3 spines, all of them shorter than segment, plus one flexible seta 1.2 times as long as segment; relative length of elements from inner to outer margin as follows 0.66, 1.0; 0.46; 0.6.</paragraph>
</subSubSection>
<subSubSection id="CB821CACC2C30508E9C50E963AF73B2F" lastPageId="5" lastPageNumber="40" pageId="3" pageNumber="38" type="description of male">
<paragraph id="DDB55D9EF0B38527CD537A6EA30E983D" pageId="3" pageNumber="38">Description of male.</paragraph>
<paragraph id="681543B6F0CB386CC252EEC85017137C" lastPageId="4" lastPageNumber="39" pageId="3" pageNumber="38">
Habitus resembling that of female, body length, excluding caudal setae= 420µm; (average = 410 
<normalizedToken id="0A3F25832A43053185AA5B3F06818AD1" originalValue="μm">μm</normalizedToken>
; n = 10; holotype: 420 
<normalizedToken id="240555A22AB82C42A99546610EB85BDC" originalValue="μm">μm</normalizedToken>
). Cephalosome with middle integumental window dorsally and lateral window on posterior margin. Second and third somites of prosome with integumental windows laterally, the latter being smallest (Fig. 3G). Rostrum as in female, antennules geniculate, 14-segmented (Fig. 3H), antennular segments 10-12 with modified brush-like setae (detail in Fig. 3H). Antenna, maxilla, maxillule, mandible and maxilliped as in female. Urosome 
<pageBreakToken id="A87966A0B4914DC6A1EBE7298E17CA25" pageId="4" pageNumber="39" start="start">with</pageBreakToken>
six somites, third somite with integumental window dorsally (Fig. 3F), caudal rami as in female.
</paragraph>
<paragraph id="4A7DBBE9EDF32BCDC0EF125AEB57EDF5" lastPageId="5" lastPageNumber="40" pageId="4" pageNumber="39">
P1-P4 as in female (Fig. 4 
<normalizedToken id="8D5CC5246B9C1D60E6D1438C44EF26F8" originalValue="A–C">A-C</normalizedToken>
), P5 exopod subrectangular, about 1.27 as long as wide, and bearing 3 spines and 2 setae (Fig. 4D), relative length of elements from inner 
<pageBreakToken id="A7DDC19ED35AB2A29DF9C2574BD216F9" pageId="5" pageNumber="40" start="start">to</pageBreakToken>
outer margin as follows 1.0, 0.8, 1.0; 0.6, 0.5. Sixth leg represented by fig with three elements, two stout setae, middle seta shortest (Fig. 4E).
</paragraph>
</subSubSection>
<subSubSection id="2192D2C653BAF0E28AB96C8CF71CD6EA" pageId="5" pageNumber="40" type="etymology">
<paragraph id="2690C2A39F8A38A98578F76825B71B1C" pageId="5" pageNumber="40">Etymology.</paragraph>
<paragraph id="BD4B1BD62BB6C1AFB7CBD245D2E02A00" pageId="5" pageNumber="40">The species is named after Dr. Santiago Gaviria for his work on Colombian copepods and his leadership in the formation of new generations of planktologists.</paragraph>
</subSubSection>
<subSubSection id="A4E3A04B938545734F80149ED7CC493F" lastPageId="7" lastPageNumber="42" pageId="5" pageNumber="40" type="remarks">
<paragraph id="6308E701FE73427EA6BE21A6955C5965" pageId="5" pageNumber="40">Remarks.</paragraph>
<paragraph id="D396349FEEFFD3B9F0528D25B146F41E" pageId="5" pageNumber="40">
<taxonomicName id="0EDCEBE79F6848D6DD3B3EADABB0DA0D" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="5" pageNumber="40" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n. is assigned to the group of species 
<normalizedToken id="276018553B9D28135E7D4670CC128EA9" originalValue="“B”">&quot;B&quot;</normalizedToken>
of 
<taxonomicName id="92FB52AAD151671F505975088646E87B" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops" order="Cyclopoida" pageId="5" pageNumber="40" phylum="Arthropoda" rank="genus">Halicyclops</taxonomicName>
with a 3443 spine formula; this is the most diverse group containing 74 species (see 
<bibRefCitation id="BE6AEF3D10DE69A43A32BC40BC331522" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Pesce 2014</bibRefCitation>
). One of its subgroups, including approximately 15 species (
<bibRefCitation id="0B196F8A63C0958C0797ABC0738B6B78" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Pesce 2014</bibRefCitation>
) is the thermophilus- complex, proposed by 
<bibRefCitation id="80469CE6CF2C3462FF2EA5B09AAADB49" author="Herbst, HV" journalOrPublisher="Bijdragen tot de Dierkunde" pageId="8" pageNumber="43" pagination="262 - 266" title="Amsterdam expeditions to the West Indian Islands, report 32. Ein neuer Copepode (Cyclopoida: Gnathostoma) von den Westindischen Inseln: Halicyclopsantiguaensis n. sp." volume="53" year="1983">Herbst (1983)</bibRefCitation>
. Species in this group share the presence of a chitinous blunt hook-like process on each side of the genital double-somite, but in 
<taxonomicName id="B30AA777930A2E67ACB27D20F7645E11" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="5" pageNumber="40" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
this process is reduced or absent. Other characters related to this group include: inner distal margin of the basis of leg 1 devoid of setae, thus diverging from 
<taxonomicName id="F852C8BA28C735A6336EB2E84A1A66A0" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="5" pageNumber="40" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n. with a well-developed inner basipodal spine. Two characters of the thermophilus group present in our specimens are: intercoxal sclerite of P1-P4 naked, and regular, unmodified setae on P4 EXP2-3. Because of the absence of the main group characters, the new species is not assigned to the thermophilus-complex. In Colombia, only one species of the thermophilus group has been hitherto recorded: 
<taxonomicName id="3FF73E3892F8A95436ABCBA90D7DC4B6" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops venezuelaensis" order="Cyclopoida" pageId="5" pageNumber="40" phylum="Arthropoda" rank="species" species="venezuelaensis">Halicyclops venezuelaensis</taxonomicName>
Lindberg, 1954.
</paragraph>
<paragraph id="B47E0D971CC3C4B5BE525CDFD7A41216" lastPageId="6" lastPageNumber="41" pageId="5" pageNumber="40">
Among the species of 
<taxonomicName id="BFF9D1165828CD8CD739A9223614845F" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="genus">
<pageBreakToken id="159A3CC6E334938EEAD48B7A9AA653B3" pageId="6" pageNumber="41" start="start">Halicyclops</pageBreakToken>
</taxonomicName>
reported from the Caribbean region and adjacent areas (
<bibRefCitation id="A7BE6B8DF265095AA60A5B6A96B76176" author="Rocha, CEF" journalOrPublisher="Sarsia" pageId="8" pageNumber="43" pagination="387 - 399" title="A new species of Halicyclops (Copepoda, Cyclopoida, Cyclopidae) from cenotes of the Yucatan Peninsula, Mexico, with an identification key for the species of the genus from the Caribbean region and adjacent areas." volume="83" year="1998">Rocha et al. 1998</bibRefCitation>
), 
<taxonomicName id="85C6AF83F61B9669C4B81A07403D4774" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n. closely resembles 
<taxonomicName id="9263F39CD3BFF7FEB93FED2489CFEC30" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
Herbst, 1982 described from Louisiana and 
<taxonomicName id="4EF3F855AAF4BE3473082734E11471D6" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
Rocha &amp; Iliffe, 1993 from Bermuda. Both of them lack strong processes on the genital double-somite and have a P1 with a strong inner basipodal spine (
<bibRefCitation id="0F9CC4D8A64A97622D044B82B9667DE7" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
; 
<bibRefCitation id="51307FE0E01F3671CCAD02FE2C1E1F16" author="Rocha, CEF" journalOrPublisher="Sarsia" pageId="8" pageNumber="43" pagination="43 - 56" title="New cyclopoids (Copepoda) from anchialine cave in Bermuda." volume="78" year="1993">Rocha and Iliffe 1993</bibRefCitation>
; 
<bibRefCitation id="3F8B5ED78A8EEE4320506EC08FBB483E" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Pesce 2014</bibRefCitation>
). When the most recent key to the Neotropical species of 
<taxonomicName id="734E0E4A175A5A0DE1B657D1536FBEC7" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="genus">Halicyclops</taxonomicName>
(
<bibRefCitation id="E8832A81AD7261F70D4FFC163682B9FE" author="Rocha, CEF" journalOrPublisher="Sarsia" pageId="8" pageNumber="43" pagination="387 - 399" title="A new species of Halicyclops (Copepoda, Cyclopoida, Cyclopidae) from cenotes of the Yucatan Peninsula, Mexico, with an identification key for the species of the genus from the Caribbean region and adjacent areas." volume="83" year="1998">Rocha et al. 1998</bibRefCitation>
) is followed, our specimens from Colombia key down to a couplet leading to these two species (
<taxonomicName id="C2B087950ECA51D93E3159DD5C155C54" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
, 
<taxonomicName id="2FA315E8CA19886E74294C1FC7BC6EE1" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
). They share the same spine formula of P1-P4EXP3 (3443), the P4EXP3 with 3 spines on the outer margin, and the terminal antennulary segment with 5 lateral setae. The female fifth legs of these species are also very similar (
<bibRefCitation id="9C5D68E10E4C794D721998B5E0D8CBB1" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
; 
<bibRefCitation id="50EF53DB081985EF65C792BE8A4CA6E6" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="29 - 37" title="A new species of Halicyclops (Copepoda, Cyclopidae) from California, and a revision of some Halicyclops material in the collections of the US Museum of Natural History." volume="226" year="1991">Rocha 1991</bibRefCitation>
). However, 
<taxonomicName id="CC2E18D7D3DBA363FD9ABDA4E5912D20" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n. can be separated from both 
<taxonomicName id="9FAEC57DC1951A3E6D42D8DCE0F6FF49" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
and 
<taxonomicName id="5C206BD7AF70E6D6FC0731A21217EA25" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
by differences in several characters. In 
<taxonomicName id="D5212D896F2070385CFA21CF7D5D8070" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
the integumental windows of the genital double-somite are rounded and relatively small (
<bibRefCitation id="B6236C85576509A06DE4030A3BFC7F37" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
, fig. 15) whereas they are oblong and larger in the new species (Fig. 3A). The morphology and ornamentation of the anal pseudoperculum has been regarded of taxonomical value to distinguish species in this group (
<bibRefCitation id="17D8142CB06533807DC36B67AD98183F" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe 1993</bibRefCitation>
; 
<bibRefCitation id="254F992C5D495A4EA82C4914EBDB18A6" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Pesce 2014</bibRefCitation>
). This structure is slightly curved and bears tiny denticles along the free margin in 
<taxonomicName id="55283E3E4814B50FD28C703B83644485" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
(
<bibRefCitation id="910966865EECB4CEFA0AD12424037F8D" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
, fig. 16), it is strongly developed and coarsely serrate in 
<taxonomicName id="4044769D06AEC189CF70B82C93192228" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
(
<bibRefCitation id="A46B784A837605C22EB4E0322CE4D990" author="Rocha, CEF" journalOrPublisher="Sarsia" pageId="8" pageNumber="43" pagination="43 - 56" title="New cyclopoids (Copepoda) from anchialine cave in Bermuda." volume="78" year="1993">Rocha and Illife 1993</bibRefCitation>
, fig. 27), and it has shallow, irregular indentations, and is slightly curved in the new species (Fig. 3B).
</paragraph>
<paragraph id="5280E84B6CC4D08D87D848AF986B8D56" pageId="6" pageNumber="41">
The length/width ratio of the fourth antennulary segment differs in these species, it is much shorter in 
<taxonomicName id="059F0122B675C5C4C50E929CED961465" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
(ratio = 1.7) vs. 2.5 in 
<taxonomicName id="E6CE4CC0FB5B782F887AE672C5F1A40C" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
(
<bibRefCitation id="B367BD2F9E4EFD112FBEA33787277795" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe 1993</bibRefCitation>
) and 2.7 in 
<taxonomicName id="31C82B8EB8545CF18D59D626DB437B1C" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
(
<bibRefCitation id="863C6CD4433E8B387F821D62993356B7" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
, fig. 18). Also, in 
<taxonomicName id="5AEDB5A19BAA81008309DFBBFA41156A" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
the inner basipodal spine of P1 is long, slender, it reaches half of P1ENP3 (
<bibRefCitation id="81ADB06CE2DB1DEE5B5E517247CDEDB8" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
, fig. 19), in 
<taxonomicName id="D5E6E07D3CB4D378C7EF91A3BC4A9B34" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
this spine is more robust and shorter, it 
<normalizedToken id="166126381C3DF890CEAB00112959BBF3" originalValue="doesn’t">doesn't</normalizedToken>
reach the distal margin of P1ENP2 (
<bibRefCitation id="39928B521230D481EE61875C60698D95" author="Rocha, CEF" journalOrPublisher="Sarsia" pageId="8" pageNumber="43" pagination="43 - 56" title="New cyclopoids (Copepoda) from anchialine cave in Bermuda." volume="78" year="1993">Rocha and Illife 1993</bibRefCitation>
, fig. 29), whereas in 
<taxonomicName id="FBC2C17FBF64FFA3AD7CC4118783D14A" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
this spine reaches the distal margin of P1ENP2 (Fig. 2A). The length ratio P1EXP/basipodal spine is about 2.0 in 
<taxonomicName id="BC199727E6D8F7E0999C2546FF31CF52" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
(
<bibRefCitation id="341C261C6F59474F922C6DE1009F2F1B" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe 1993</bibRefCitation>
, fig. 29), 1.42 in 
<taxonomicName id="DB088F189436F9D3255E62C894403B37" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
(
<bibRefCitation id="08DDA21EECB657D970CB4D97426EF261" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
, fig. 19), and 1.63 in 
<taxonomicName id="B4FC1B1A48B8B44332743C2B28E53010" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
.
</paragraph>
<paragraph id="92CF7AC8B59B2725C0C639C6E5B8B512" pageId="6" pageNumber="41">
The armature details of P4ENP3 shows some additional differences among these species; this segment is armed with 4 spines and one spiniform, distally serrate seta in both 
<taxonomicName id="7EAADB2B4B1AE874EB6EA5A8E4E10A72" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
(
<bibRefCitation id="1FC9020322ACF7FF1CCC72BD2D07A457" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
, fig. 22; 
<bibRefCitation id="8C1BB29357A0FE47F5D7FEAAD3AC8BF3" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="29 - 37" title="A new species of Halicyclops (Copepoda, Cyclopidae) from California, and a revision of some Halicyclops material in the collections of the US Museum of Natural History." volume="226" year="1991">Rocha 1991</bibRefCitation>
, fig. 10) and 
<taxonomicName id="911FDD81279CFEBA49591B74733B1F13" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n., while in 
<taxonomicName id="99F453223D5C037BA37BC50FE9AD8271" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
the armature consists of 3 spines and 2 stout, plumose setae (
<bibRefCitation id="1CD783A60C9141109EA131AF47546AC9" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe 1993</bibRefCitation>
, fig. 31). Also, in 
<taxonomicName id="56AE0873BB69EAED63A788644980AF4F" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
the inner apical spine of P4ENP3 is as long as the segment (
<bibRefCitation id="36FFF37A6315E423587BC773D4954F91" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
, fig. 22; 
<bibRefCitation id="2BDBC3289E300BD774641D28C934EEB3" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="145 - 156" title="New species of Halicyclops (CopepodaCyclopidae) from the United States of America." volume="259" year="1993">Rocha and Hakenkamp 1993</bibRefCitation>
), whereas in both our specimens from Colombia and in 
<taxonomicName id="C6A4C6EEA7DB0879CEB3E394BE915511" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
(
<bibRefCitation id="4762642F1CA1E10FD3BD100AB78D9ECC" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe, 1993</bibRefCitation>
, fig. 31) this spine is 1.25 times as long as the segment (Fig. 2D, E). The proportions of the caudal ramus have some variation among these species, the length/width ratio is about1.5 in 
<taxonomicName id="8468888789C1BD9EFED3AE0F61639785" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
, 1.3 in 
<taxonomicName id="E4C447FE757C084A70FB592EE13F470B" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
, and 1.2 in 
<taxonomicName id="7508148254F3527DC9616992EF906C2D" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n. The inner/outer apical caudal setae length ratio is 1.8 in both the new species and in 
<taxonomicName id="1F25B0936B54FB14BE478B7B4CFAB2BB" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
(
<bibRefCitation id="7805F3E0884782BA860F6A9076FD868C" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe 1993</bibRefCitation>
, fig. 28) vs. 2.3 in 
<taxonomicName id="416072D08289DF0FEE77F81DF25313B0" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
(
<bibRefCitation id="313E0342E2647F416AE22F880A75BF13" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
, fig. 14). The body size of these species show some additional differences: measuring 560-602 
<normalizedToken id="B979791778A29709A6BA6BA9E970A49F" originalValue="μm">μm</normalizedToken>
, the female of the new species 
<taxonomicName id="41C8EE35D2EC483D8469A4FE32A82E07" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
is larger than those of 
<taxonomicName id="C784A005BD113E06D1DFA417B52A808A" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
(500-530 
<normalizedToken id="F8D566F5EA51281C14D699DD1E13A10A" originalValue="μm">μm</normalizedToken>
) (
<bibRefCitation id="FACF19D998EFD42C8F5EDBB6AED3B990" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe 1993</bibRefCitation>
), but smaller than the females of 
<taxonomicName id="DAF58341AF5A96F7E05E78C5D2B1A284" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
(698 
<normalizedToken id="FFBC5ECC70EADB4DC1B4F74FB91B5E8F" originalValue="μm">μm</normalizedToken>
) (
<bibRefCitation id="8B60B3844FC8191E444D3F632A3CA7B8" pageId="6" pageNumber="41">Herbst 1982</bibRefCitation>
).
</paragraph>
<paragraph id="851339E8B0E51232C2C5DBD8DF620D23" pageId="6" pageNumber="41">
The new species has also affinities with 
<taxonomicName id="42E4059299956905AA55B54F0D83E72E" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops cf. clarkei</taxonomicName>
from Panama (
<bibRefCitation id="862AB7E185743BBF56738AFA84D95399" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="29 - 37" title="A new species of Halicyclops (Copepoda, Cyclopidae) from California, and a revision of some Halicyclops material in the collections of the US Museum of Natural History." volume="226" year="1991">Rocha 1991</bibRefCitation>
), but can be easily distinguished from the new species from Colombia by the armature of the female P5, in 
<taxonomicName id="65208468C1784C1CD30574E4B7314C2B" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops cf. clarkei</taxonomicName>
the outermost spine is slightly shorter than the innermost and both are longer than the terminal segment (
<bibRefCitation id="28D96FA135282092E7CCCDC4E9CC3CAC" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="29 - 37" title="A new species of Halicyclops (Copepoda, Cyclopidae) from California, and a revision of some Halicyclops material in the collections of the US Museum of Natural History." volume="226" year="1991">Rocha 1991</bibRefCitation>
, fig. 13), but in the new species the innermost spine is as long as the segment and the outermost spine is shorter than the segment (Fig. 3E). According to 
<bibRefCitation id="E2284C62C8B8DD55E581A91E66737C3C" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="29 - 37" title="A new species of Halicyclops (Copepoda, Cyclopidae) from California, and a revision of some Halicyclops material in the collections of the US Museum of Natural History." volume="226" year="1991">Rocha (1991)</bibRefCitation>
, in both 
<taxonomicName id="B9E5B9C9DCE5F5A521904CCD6590D35A" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops cf. clarkei</taxonomicName>
from Panama and 
<taxonomicName id="2DA64646C3D5647048897D1741590B6E" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
from the type locality in Louisiana the length/width ratio of the fourth antennulary segment are identical, about 2.7; this value diverges from that found in 
<taxonomicName id="012C1855C57E92638550BD62BDDD18B8" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
(1.7). Also, in 
<taxonomicName id="91DCC4A790B012FE4D4D48469A408E1A" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops cf. clarkei</taxonomicName>
the ENP3 of P2-P3 have the proximalmost inner seta modified as a stiff ornamented seta as the proximal seta of ENP3 of P4 (
<bibRefCitation id="31FB7EB64C0777A87AAE69BC93CD2A49" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="29 - 37" title="A new species of Halicyclops (Copepoda, Cyclopidae) from California, and a revision of some Halicyclops material in the collections of the US Museum of Natural History." volume="226" year="1991">Rocha 1991</bibRefCitation>
, fig. 10), but in the new species these seta are unmodified, flexible elements (Fig. 2B, C). 
<bibRefCitation id="01B91E8D8F3E33FF4CFD64A74368EB22" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="29 - 37" title="A new species of Halicyclops (Copepoda, Cyclopidae) from California, and a revision of some Halicyclops material in the collections of the US Museum of Natural History." volume="226" year="1991">Rocha (1991)</bibRefCitation>
stated that the differences between the Panama specimens of 
<taxonomicName id="2DFF0D2C123A64F6BE9859DFE755E5C9" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="6" pageNumber="41" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops cf. clarkei</taxonomicName>
and those from the type locality in Louisiana are probably related to different species.
</paragraph>
<paragraph id="98D81F7C7E74D4446A4ED53A29BAB947" pageId="7" pageNumber="42">
<pageBreakToken id="59B302F851F7309D0EBEC990964D5176" pageId="7" pageNumber="42" start="start">The</pageBreakToken>
male of the new species 
<taxonomicName id="C2E0325F0F1C83037B1F777985200650" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
differs from the male of 
<taxonomicName id="BB063BC190A3059FA309BD67BFB264A1" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
in the presence of modified setae on the antennular segments 10-11, lacking in 
<taxonomicName id="3FE072584A464A0607C8FCE20BB9764B" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
(
<bibRefCitation id="26174EB8AB1B0C9371C1EC963F462F35" pageId="7" pageNumber="42">Herbst 1982</bibRefCitation>
, fig. 25). Also, the length/width ratio of P4ENP4 is about 1.63 times as long as wide in 
<taxonomicName id="93CECEDA292749AA7DD9DFD81F47699A" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n., while in 
<taxonomicName id="29EEC9B3D27887BA75D2A4376F1B2B0E" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
is 1.53. The length/width ratio of P5EXP is about 1.27 in 
<taxonomicName id="DFBEBBEEC997243FCC36981FB17CFF3C" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n., vs. 1.64 in 
<taxonomicName id="8E7BD9017D4FC0222943A6B7BC533750" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
(
<bibRefCitation id="302CCC425D19E978A671D11176EAD0A9" pageId="7" pageNumber="42">Herbst 1982</bibRefCitation>
, fig. 26). In 
<taxonomicName id="9F49C21B9B62C2878FC4253FD75821F3" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
the outer seta of P6 is clearly longer than the inner spine (
<bibRefCitation id="EF196986D6BA75BE74F71FD3D7F0C3D5" pageId="7" pageNumber="42">Herbst 1982</bibRefCitation>
, fig. 27), whereas in 
<taxonomicName id="49CF30EC5114DCD58D4C36B541C98D1D" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n., the opposite condition occurs, the outer seta is shorter. Unfortunately, the male of 
<taxonomicName id="D7BE10B96879DA2599E60C1A115A6D42" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
remains unknown (
<bibRefCitation id="C6E276E6CB8A57AFA513722FB11D828B" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe 1993</bibRefCitation>
) and could not be compared with the male of the new species.
</paragraph>
<paragraph id="EAB9297A7F8B6F0C38E7CF42FFB7543D" pageId="7" pageNumber="42">
<taxonomicName id="E606A4922ECA31DF2B51B56E107D13AE" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n. is characterized by a unique combination of characters including: 1) last antennary segment with five lateral setae, 2) length/wide ratio of same segment over than twice as long as wide, 3) fourth segment of female antennule over than twice as long as wide, 4) inner basipodal spine of P1 reaching the posterior border of the ENP2 of P1, 5) ENP3 of P4 with four serrate spines and one seta, and 6) P5 about 1.45 times as long as wide, apical seta longer than the segment.
</paragraph>
<paragraph id="288E19C1583F8F7D53341AE85EDA332B" pageId="7" pageNumber="42">
Distribution and ecology. Halicyclops gaviriai sp. n. is currently known from a single locality only, the protected coastal system Laguna 
<normalizedToken id="B73B47A341CFB4982F838B720A047B84" originalValue="Navío">Navio</normalizedToken>
Quebrado, on the Caribbean coast of Colombia. This species was recorded in both the limnetic region and the vegetation zones, being more frequent in the former habitat. This large (surface area of 10.7 km2) lagoon system is a shallow water body (depth 0.3-1.1 m), whose temperature varies over the seasons in the range of 28-31 °C; pH values during sampling ranged between 7.8 and 8.3 and salinity was 28 PSU. This habitat diverges from that of one of its closest congeners, 
<taxonomicName id="2B629CDF4FB67F4FF08D93020B1832C5" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops bowmani" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="bowmani">Halicyclops bowmani</taxonomicName>
, a stygobitic form recorded only from an anchialine system of Bermuda (
<bibRefCitation id="EAEC6121AB43287208D45C2CDF182EC4" author="Pesce, GL" journalOrPublisher="Zootaxa" pageId="8" pageNumber="43" title="Cyclopoida: Halicyclopinae Kiefer, 1927: Halicyclops A. M. Norman, 1903." url="http://www.luciopesce.net/copepods/halicyc.htm" year="2014">Rocha and Iliffe 1993</bibRefCitation>
). The known habitat of its other close congener, 
<taxonomicName id="C44C9851B490888F78CDCAA10C4DA845" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops clarkei</taxonomicName>
, is Lake Peigneur, a former freshwater system whose salinity drastically increased since 1980 after a failed oil drill deeply modified the system (
<bibRefCitation id="7DE5F4039ADD881119E03EEF7A8A4D57" author="Zio, E" journalOrPublisher="Process Safety and Environmental Protection" pageId="8" pageNumber="43" pagination="31 - 45" title="Industrial disasters: Extreme events, extremely rare. Some reflections on the treatment of uncertainties in the assessment of the associated risks." volume="91" year="2013">Zio and Aven 2013</bibRefCitation>
). The samples examined by 
<bibRefCitation id="8AE5444C1098C9F339DDA9DD577A2302" pageId="7" pageNumber="42">Herbst (1982)</bibRefCitation>
were obtained before this event, in 1977; he reported a low salinity range (0-5 psu) for this species. Hence, it is an intriguing question if this presumably endemic species was able to adapt to the new conditions and is still extant in the locality or adjacent areas.
</paragraph>
<paragraph id="1B12E8BE8A0BF78E7BF88E3B7F750EED" pageId="7" pageNumber="42">
The number of Neotropical species recognized by 
<bibRefCitation id="80E2919D5E78B0567C59C6CF647F0F34" author="Rocha, CEF" journalOrPublisher="Sarsia" pageId="8" pageNumber="43" pagination="387 - 399" title="A new species of Halicyclops (Copepoda, Cyclopoida, Cyclopidae) from cenotes of the Yucatan Peninsula, Mexico, with an identification key for the species of the genus from the Caribbean region and adjacent areas." volume="83" year="1998">Rocha et al. (1998)</bibRefCitation>
was 17 and it remained stable in the region until the recent description of 
<taxonomicName id="F936D6EBE02F6CEBA7BE71110A4E2E05" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops ramirezi" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="ramirezi">Halicyclops ramirezi</taxonomicName>
from Argentina (Menu-Marque and Sorarrain, 2007) and the addition of this new species from Colombia, thus raising the number of known Neotropical species to 19. Furthermore, some nominal species in the literature such as 
<taxonomicName id="64B1D810567AA97CB6E7A179792FEA43" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops clarkei" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="clarkei">Halicyclops cf. clarkei</taxonomicName>
from Panama (
<bibRefCitation id="CA94CD9C9982E4BDFBDCE05E2CE3E2D3" author="Rocha, CEF" journalOrPublisher="Hydrobiologia" pageId="8" pageNumber="43" pagination="29 - 37" title="A new species of Halicyclops (Copepoda, Cyclopidae) from California, and a revision of some Halicyclops material in the collections of the US Museum of Natural History." volume="226" year="1991">Rocha 1991</bibRefCitation>
) probably represent undescribed species. The diversity of the genus in the region could be underestimated and certainly deserves further investigations.
</paragraph>
<caption id="D98E52DD124F0E45ED95D88005C7B9EF" pageId="7" pageNumber="42">
<paragraph id="6903BA79DE48B34879CD38C374BD842E" pageId="7" pageNumber="42">
Figure 1. 
<taxonomicName id="AA830D8A4231472A1D5ACE67112CE52E" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n., adult paratype female from northern Colombia. A habitus, dorsal view B antennule C labrum, ventral D rostrum E antenna F mandible G maxillule H maxilla I maxilliped. Scale bars: A=100 
<normalizedToken id="CD904972D27245ABC063D3D3C5FA161A" originalValue="μm">μm</normalizedToken>
, 
<normalizedToken id="32826A82FD5781A111C988F97AA01108" originalValue="B–F">B-F</normalizedToken>
= 50 
<normalizedToken id="2C0C5EB13ED02150CBC8DB474622C7CB" originalValue="μm">μm</normalizedToken>
.
</paragraph>
</caption>
<caption id="E5A6A96D81A7820203567F4BB69B01DF" pageId="7" pageNumber="42">
<paragraph id="684A541364513B4FE31A7E9936536374" pageId="7" pageNumber="42">
Figure 2. 
<taxonomicName id="8AD135733A7088B534C445AAF3E939BC" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n., adult holotype female from northern Colombia. A leg 1 B leg 2 C leg 3 D leg 4 E. leg 4 terminal endopodal segment showing details of armature. Scale bars: 
<normalizedToken id="B48F5F37B11E508ACBF9740129D5CDA4" originalValue="A–D">A-D</normalizedToken>
= 50 
<normalizedToken id="CB28AFD057DEC2F70C2C92072119F77F" originalValue="μm">μm</normalizedToken>
, E=25 
<normalizedToken id="E5BBB7438846DA5C0F303CAC35F3B71D" originalValue="μm">μm</normalizedToken>
.
</paragraph>
</caption>
<caption id="B5EC2851B0E03DF38133281565D5BC29" pageId="7" pageNumber="42">
<paragraph id="B464C77100D6C14765DACD329F83CF05" pageId="7" pageNumber="42">
Figure 3. 
<taxonomicName id="5ABBE44595BF81388791FE02C9172EBB" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n., adult holotype female from northern Colombia. A urosome showing genital somite, ventral view B anal somite showing anal pseudoperculum, dorsal view C internal structures of genitalia, ventral view, D proximal section of middle apical setae of caudal ramus E leg 5; adult male from same locality F urosome, ventral view G lateral view of cephalothorax showing position of integumental windows H geniculate antennule, showing brush-like modified setae on segments 10-12. Scale bars: A,B, F, H =50 
<normalizedToken id="D4519010CF04C3E70BD4E57FB965F016" originalValue="μm">μm</normalizedToken>
, 
<normalizedToken id="2C16FE9F7B46FDB871AEC483BAE001F2" originalValue="C–E">C-E</normalizedToken>
= 25 
<normalizedToken id="33577F4B002E98EE9DC0F4BDA5163705" originalValue="μm">μm</normalizedToken>
, G=100 
<normalizedToken id="4DE9251911E57CB7A44812863AF42552" originalValue="μm">μm</normalizedToken>
.
</paragraph>
</caption>
<caption id="D0FB9E6D5DC21A29BE1C21B965327E2D" pageId="7" pageNumber="42">
<paragraph id="B48AF52C52AC40F5269CD9A820454A20" pageId="7" pageNumber="42">
Figure 4. 
<taxonomicName id="E6720DEAA53FA4147323F48C32150975" class="Copepoda" family="Halicyclopidae" genus="Halicyclops" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Halicyclops gaviriai" order="Cyclopoida" pageId="7" pageNumber="42" phylum="Arthropoda" rank="species" species="gaviriai">Halicyclops gaviriai</taxonomicName>
sp. n., adult male allotype from northern Colombia. A leg 1 B leg 2 C leg 4 D leg 5 E leg 6. Scale bars: 
<normalizedToken id="EA5C70B247A36DA14B53737A66207CF8" originalValue="A–C">A-C</normalizedToken>
= 50 
<normalizedToken id="2FF134BA12957076C4EA529A83B3256A" originalValue="μm">μm</normalizedToken>
, D=25 
<normalizedToken id="524078F781BBC516917681BDA8756144" originalValue="μm">μm</normalizedToken>
, E= 10 
<normalizedToken id="5F95B94EF7BCA67AFF579D56A189C5AC" originalValue="μm">μm</normalizedToken>
.
</paragraph>
</caption>
<caption id="F95F47EA2276B17A64BD85ECCB654414" ID-Table-UUID="F95F47EA2276B17A64BD85ECCB654414" httpUri="http://table.plazi.org/id/F95F47EA2276B17A64BD85ECCB654414" pageId="7" pageNumber="42">
<paragraph id="AC19A9784E3C88E7B9F28EFC38E5D9EA" pageId="7" pageNumber="42">Table 1. Armature formula of legs 1-4.</paragraph>
</caption>
<paragraph id="D5CD7228003B9D005376F13200B1ED06" pageId="7" pageNumber="42">
<table id="99E6CA67F0AEB8D8D6E50AA7DF91A2B7" pageId="7" pageNumber="42">
<tr id="6D90E1EFD5B574B5FC5D57D93F8AC47C" pageId="7" pageNumber="42">
<th id="869603381F7FD08A0503ED6722816C69" colspan="1" pageId="7" pageNumber="42" rowspan="1">coxa</th>
<th id="D62C8F626187996A32884FB93023CD32" colspan="1" pageId="7" pageNumber="42" rowspan="1">basis</th>
<th id="2B382ACEA355870C8D93719C45944BFC" colspan="1" pageId="7" pageNumber="42" rowspan="1">exopod</th>
<th id="450DFCB6602C66BCBC498A535D5D7638" colspan="1" pageId="7" pageNumber="42" rowspan="1">endopod</th>
</tr>
</table>
</paragraph>
</subSubSection>
</treatment>
</document>