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<document ID-DOI="http://dx.doi.org/10.3897/subtbiol.30.36273" ID-GBIF-Dataset="abee5ae2-82ca-44e6-a4db-9bfa388671f3" ID-GBIF-Taxon="158558892" ID-Pensoft-Pub="1314-2615-30-95" ID-ZooBank="13250A202FCC48DE828BAE6CA926E94F" ModsDocID="1314-2615-30-95" checkinTime="1565091317144" checkinUser="pensoft" docAuthor="Conde-Vela, Victor Manuel" docDate="2019" docId="4F5D39E8190E288A3EEB538A6740B772" docLanguage="en" docName="SubterBiol 30: 95-115" docOrigin="Subterranean Biology 30" docSource="http://dx.doi.org/10.3897/subtbiol.30.36273" docTitle="Stenoninereis elisae Conde-Vela, 2019, sp. nov." docType="treatment" docVersion="4" lastPageId="12" lastPageNumber="107" masterDocId="FFA83F13E973FFA1FF9DBB14FFE9E140" masterDocTitle="Sinkhole and brackish water nereidid polychaetes: Revision of Stenoninereis Wesenberg-Lund, 1958 (Annelida)" masterLastPageNumber="115" masterPageNumber="95" pageId="10" pageNumber="105" updateTime="1643457757737" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Sinkhole and brackish water nereidid polychaetes: Revision of Stenoninereis Wesenberg-Lund, 1958 (Annelida)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Conde-Vela, Victor Manuel</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>Subterranean Biology</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2019</mods:date>
<mods:detail type="volume">
<mods:number>30</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>95</mods:start>
<mods:end>115</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/subtbiol.30.36273</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/subtbiol.30.36273</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-2615-30-95</mods:identifier>
<mods:identifier type="ZooBank">13250A202FCC48DE828BAE6CA926E94F</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="158558892" LSID="urn:lsid:plazi:treatment:4F5D39E8190E288A3EEB538A6740B772" httpUri="http://treatment.plazi.org/id/4F5D39E8190E288A3EEB538A6740B772" lastPageId="12" lastPageNumber="107" pageId="10" pageNumber="105">
<subSubSection pageId="10" pageNumber="105" type="nomenclature">
<paragraph pageId="10" pageNumber="105">
<taxonomicName LSID="4F5D39E8190E288A3EEB538A6740B772" class="Polychaeta" family="Nereididae" genus="Stenoninereis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenoninereis elisae" order="Phyllodocida" pageId="10" pageNumber="105" phylum="Annelida" rank="species" species="elisae">Stenoninereis elisae</taxonomicName>
<taxonomicNameLabel pageId="10" pageNumber="105">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="10" pageNumber="105">
Figures 1
<normalizedToken originalValue="B–F">B-F</normalizedToken>
, I
</figureCitation>
;
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="10" pageNumber="105">6</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="105" type="type material">
<paragraph pageId="10" pageNumber="105">Type material.</paragraph>
<paragraph pageId="10" pageNumber="105">Syntypes. CARIBBEAN SEA, PUERTO RICO • 5; Rio Grande, Espiritu Santo River, 50 m below Castanon confluent; Apr. 1977; W.R. Bhajan leg.; USNM 55366.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="105" type="materials_examined">
<paragraph pageId="10" pageNumber="105">Additional material.</paragraph>
<paragraph pageId="10" pageNumber="105">CARIBBEAN SEA, PUERTO RICO • 3; Rio Grande, Espiritu Santo River, 50 m above Castanon confluent; W.R. Bhajan leg.; USNM 55360.</paragraph>
</subSubSection>
<subSubSection pageId="10" pageNumber="105" type="type locality">
<paragraph pageId="10" pageNumber="105">Type locality.</paragraph>
<paragraph pageId="10" pageNumber="105">Espiritu Santo River, Rio Grande, Puerto Rico.</paragraph>
</subSubSection>
<subSubSection lastPageId="12" lastPageNumber="107" pageId="10" pageNumber="105" type="description">
<paragraph pageId="10" pageNumber="105">Description.</paragraph>
<paragraph pageId="10" pageNumber="105">
Five syntypes (USNM 55366) complete, in good condition. Specimen dissected complete, 62 mm long, 0.4 m wide at chaetiger 10, 27 chaetigers. All specimens pale (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="10" pageNumber="105">
Figs 6
<normalizedToken originalValue="A–B">A-B</normalizedToken>
</figureCitation>
).
</paragraph>
<caption doi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="10" pageNumber="105" start="Figure 6" startId="F6">
<paragraph pageId="10" pageNumber="105">
Figure 6.
<taxonomicName class="Polychaeta" family="Nereididae" genus="Stenoninereis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenoninereis elisae" order="Phyllodocida" pageId="10" pageNumber="105" phylum="Annelida" rank="species" species="elisae">
<emphasis italics="true" pageId="10" pageNumber="105">Stenoninereis elisae</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="10" pageNumber="105">
<normalizedToken originalValue="A–M">A-M</normalizedToken>
</emphasis>
Syntypes (USNM 55366)
<emphasis bold="true" pageId="10" pageNumber="105">A</emphasis>
whole specimen, dorsal view
<emphasis bold="true" pageId="10" pageNumber="105">B</emphasis>
whole specimens, dorsal view
<emphasis bold="true" pageId="10" pageNumber="105">C</emphasis>
anterior end, dorsal view
<emphasis bold="true" pageId="10" pageNumber="105">D</emphasis>
Posterior end, dorsal view
<emphasis bold="true" pageId="10" pageNumber="105">E</emphasis>
chaetiger 6, right parapodium, anterior view
<emphasis bold="true" pageId="10" pageNumber="105">F</emphasis>
chaetiger 16, right parapodium, anterior view
<emphasis bold="true" pageId="10" pageNumber="105">G</emphasis>
chaetiger 18, right parapodium, anterior view
<emphasis bold="true" pageId="10" pageNumber="105">H</emphasis>
chaetiger 24, right parapodium, anterior view
<emphasis bold="true" pageId="10" pageNumber="105">I</emphasis>
subacicular heterogomph spinigers, chaetiger 18
<emphasis bold="true" pageId="10" pageNumber="105">
<normalizedToken originalValue="J–L">J-L</normalizedToken>
</emphasis>
subacicular heterogomph falcigers, chaetiger 18
<emphasis bold="true" pageId="10" pageNumber="105">M</emphasis>
notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (
<emphasis bold="true" pageId="10" pageNumber="105">
<normalizedToken originalValue="A–B">A-B</normalizedToken>
</emphasis>
); 0.25 mm (
<emphasis bold="true" pageId="10" pageNumber="105">C</emphasis>
); 0.2 mm (
<emphasis bold="true" pageId="10" pageNumber="105">
<normalizedToken originalValue="E–H">E-H</normalizedToken>
</emphasis>
); 10
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="10" pageNumber="105">
<normalizedToken originalValue="I–L">I-L</normalizedToken>
</emphasis>
); 30
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="10" pageNumber="105">M</emphasis>
).
</paragraph>
</caption>
<paragraph lastPageId="11" lastPageNumber="106" pageId="10" pageNumber="105">
Prostomium wider than long, anterior margin shallowly cleft (
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="10" pageNumber="105">Figs 1I</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="10" pageNumber="105">6C</figureCitation>
); antennae subulate, half as long as prostomium; eyes black, anterior and posterior eyes
<pageBreakToken pageId="11" pageNumber="106" start="start">rounded</pageBreakToken>
, anterior eyes smaller than posterior ones, strongly overlapped, forming a pyriform spot (
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="11" pageNumber="106">Figs 1I</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">
6
<normalizedToken originalValue="A–C">A-C</normalizedToken>
</figureCitation>
). Achaetous ring as long as first chaetiger; four pairs of anterior cirri, longest one reaching chaetiger 6, anterodorsal pair lanceolate, remaining ones subulate (
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="11" pageNumber="106">Figs 1I</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">
6
<normalizedToken originalValue="A–C">A-C</normalizedToken>
</figureCitation>
).
</paragraph>
<paragraph pageId="11" pageNumber="106">Pharynx dissected; jaws brown, translucent, 8 teeth. Pharynx surface bare.</paragraph>
<paragraph pageId="11" pageNumber="106">All chaetigers with noto- and neuroaciculae; dorsal cirri cirrophores and notopodial dorsal ligules of anterior chaetigers with ciliate surface. In first two chaetigers, notopodium with a small, rounded lobe bearing notoaciculum. Neuroacicular ligule subconical, twice longer than ventral cirrus. Ventral cirrus subulate, cirrophore and cirrostyle indistinct.</paragraph>
<paragraph pageId="11" pageNumber="106">
In anterior chaetigers (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">Figs 6E</figureCitation>
), dorsal cirrus longer than chaetiger width, excluding parapodia; cirrophore 5.5-6.0 times longer than cirrostyle, 2.6 times longer than notopodial dorsal ligule, 3 times longer than notopodial ventral ligule. Notopodial dorsal ligule digitiform, basally attached to, and 1.2 times longer than, notopodial ventral ligule; notopodial ventral ligule subconical, 2.3 times longer than wide, 1.3 times longer than neuroacicular ligule. Neuroacicular ligule subconical, 1.5 times longer than wide, 2.2 times longer than ventral cirrus. Ventral cirrus subulate, cirrophore and cirrostyle indistinct.
</paragraph>
<paragraph pageId="11" pageNumber="106">
In middle chaetigers (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">
Figs 6
<normalizedToken originalValue="F–G">F-G</normalizedToken>
</figureCitation>
), dorsal cirrus longer than chaetiger width, excluding parapodia; cirrophore 2.5-3 times longer than cirrostyle, twice longer than notopodial dorsal ligule and becoming shorter toward posterior chaetigers, twice longer than notopodial ventral ligule. Notopodial dorsal ligule digitiform, as long as notopodial ventral ligule, rapidly decreasing in size toward posterior chaetigers and disappearing from chaetiger 23-25; notopodial ventral ligule subconical, twice longer than wide, 1.6 times longer than neuroacicular ligule. Neuroacicular ligule subconical, 1.2-1.4 times longer than wide, twice longer than ventral cirrus. Ventral cirrus subulate, cirrophore and cirrostyle indistinct.
</paragraph>
<paragraph pageId="11" pageNumber="106">
In posterior chaetigers (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">Fig. 6H</figureCitation>
), dorsal cirrus as long as chaetiger width, excluding parapodia; cirrophore 1.4 times longer than cirrostyle, 1.5 times longer than notopodial ventral ligule. Notopodial dorsal ligule absent; notopodial ventral ligule subconical, twice longer than wide, as long as neuroacicular ligule. Neuroacicular ligule subconical, 1.3 times longer than wide, 1.3 times longer than ventral cirrus. Ventral cirrus subulate, cirrophore and cirrostyle indistinct.
</paragraph>
<paragraph pageId="11" pageNumber="106">Notochaetae sesquigomph spinigers. Neurochaetae sesquigomph spinigers in supra-acicular fascicles, heterogomph spinigers and falcigers in sub-acicular fascicles.</paragraph>
<paragraph pageId="11" pageNumber="106">
Notopodial (
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="11" pageNumber="106">Figs 1C</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">6M</figureCitation>
) and neuropodial (
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="11" pageNumber="106">Fig. 1D</figureCitation>
) supra-acicular sesquigomph spinigers pectinate, very minute teeth, disappearing toward distal end. Neuropodial heterogomph spinigers (
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="11" pageNumber="106">Figs 1E</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">6I</figureCitation>
) serrate, coarse teeth, larger teeth longer than blade width, 1/3 of blade edentate, subulate. Neuropodial heterogomph falcigers (
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="11" pageNumber="106">Fig. 1F</figureCitation>
) with very long blades, blades increasing their length toward posterior chaetigers, blades with basal and medial teeth minute, often inconspicuous (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">
Figs 6
<normalizedToken originalValue="J–L">J-L</normalizedToken>
</figureCitation>
), rarely some small teeth basally and distally (
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Morphology of Stenoninereis species A non-type of S. lackeyi comb. n. (USNM 53273) B, I syntypes of S. elisae sp. nov. (USNM 55366) C-F non-type of S. elisae sp. nov. (USNM 55360) G non-type of S. martini Wesenberg-Lund 1958 (USNM 61623) H holotype of S. tecolutlensis de Leon-Gonzalez &amp; Solis-Weiss, 1997 (USNM 174870) A anterior end, dorsal view B chaetiger 6, left parapodium (solid and dashed red lines: vessels; solid and dashed light blue lines: unknown structures, likely nerves) C shaft of notopodial sesquigomph spinigers, chaetiger 20 D shaft of neuropodial supra-acicular sesquigomph spiniger, same chaetiger E shaft of neuropodial sub-acicular heterogomph spiniger, chaetiger 20 F Shaft of neuropodial sub-acicular heterogomph falciger, chaetiger 20 G-I anterior ends, dorsal view. Abbreviations: AC, anterior cirri; An, antennae; Cp, cirrophore; Cs, cirrostyle; DC, dorsal cirrus; Es, esophagus; NeL, neuroacicular ligule; NoD, notopodial dorsal ligule; NoV, notopodial ventral ligule; Ph, pharynx; Pp, palpophore; Ps, palpostyle; VC, ventral cirrus; ¿?, unknown structures, likely nerves by their position. Scale bars: 0.2 mm (A, G-I); 0.1 mm (B); 5 µm (C-F)." figureDoi="10.3897/subtbiol.30.36273.figure1" httpUri="https://binary.pensoft.net/fig/315675" pageId="11" pageNumber="106">Fig. 1E</figureCitation>
); supra-acicular blades shorter than sub-acicular ones, blades of sub-acicular falcigers increasing their length from upper to lower positions in the same fascicle (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="11" pageNumber="106">
Figs 6
<normalizedToken originalValue="J–L">J-L</normalizedToken>
</figureCitation>
).
</paragraph>
<paragraph pageId="12" pageNumber="107">
<pageBreakToken pageId="12" pageNumber="107" start="start">Pygidium</pageBreakToken>
with two anal plate-like lobes; anal cirri as long as last five chaetigers (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Stenoninereis elisae sp. nov. A-M Syntypes (USNM 55366) A whole specimen, dorsal view B whole specimens, dorsal view C anterior end, dorsal view D Posterior end, dorsal view E chaetiger 6, right parapodium, anterior view F chaetiger 16, right parapodium, anterior view G chaetiger 18, right parapodium, anterior view H chaetiger 24, right parapodium, anterior view I subacicular heterogomph spinigers, chaetiger 18 J-L subacicular heterogomph falcigers, chaetiger 18 M notopodial homogomph spiniger, chaetiger 49. Scale bars: 0.5 mm (A-B); 0.25 mm (C); 0.2 mm (E-H); 10 µm (I-L); 30 µm (M)." figureDoi="10.3897/subtbiol.30.36273.figure6" httpUri="https://binary.pensoft.net/fig/315680" pageId="12" pageNumber="107">Fig. 6D</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="12" pageNumber="107" type="etymology">
<paragraph pageId="12" pageNumber="107">Etymology.</paragraph>
<paragraph pageId="12" pageNumber="107">
The name is after the late Dr. Elise Wesenberg-Lund, in recognition of her many works in polychaete taxonomy, especially freshwater ones, and by proposing the genus
<taxonomicName class="Polychaeta" family="Nereididae" genus="Stenoninereis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenoninereis" order="Phyllodocida" pageId="12" pageNumber="107" phylum="Annelida" rank="genus">
<emphasis italics="true" pageId="12" pageNumber="107">Stenoninereis</emphasis>
</taxonomicName>
. The name is a noun in apposition and was formed by the elision of the last vowel for euphony.
</paragraph>
</subSubSection>
<subSubSection pageId="12" pageNumber="107" type="remarks">
<paragraph pageId="12" pageNumber="107">Remarks.</paragraph>
<paragraph pageId="12" pageNumber="107">
Due to the morphological variability observed in specimens belonging to
<taxonomicName class="Polychaeta" family="Nereididae" genus="Stenoninereis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenoninereis" order="Phyllodocida" pageId="12" pageNumber="107" phylum="Annelida" rank="genus">
<emphasis italics="true" pageId="12" pageNumber="107">Stenoninereis</emphasis>
</taxonomicName>
, the designation of syntypes was preferred (ICZN 1999, Art. 72.3).
<taxonomicName class="Polychaeta" family="Nereididae" genus="Stenoninereis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Stenoninereis elisae" order="Phyllodocida" pageId="12" pageNumber="107" phylum="Annelida" rank="species" species="elisae">
<emphasis italics="true" pageId="12" pageNumber="107">Stenoninereis elisae</emphasis>
</taxonomicName>
sp. nov. is easily recognized by the enlarged dorsal cirri in anterior and middle chaetigers, being two or three times longer than the width of their respective segments, and by the size and proximity of the eyes resulting into a pyriform shape. The cirrophore/cirrostyle lengths ratio is also distinctive for this species because the cirrophore is longer than cirrostyle throughout the body, whereas in
<taxonomicName genus="S." lsidName="S. lackeyi" pageId="12" pageNumber="107" rank="species" species="lackeyi">
<emphasis italics="true" pageId="12" pageNumber="107">S. lackeyi</emphasis>
</taxonomicName>
comb. n.,
<taxonomicName genus="S." lsidName="S. martini" pageId="12" pageNumber="107" rank="species" species="martini">
<emphasis italics="true" pageId="12" pageNumber="107">S. martini</emphasis>
</taxonomicName>
, and
<taxonomicName genus="S." lsidName="S. tecolutlensis" pageId="12" pageNumber="107" rank="species" species="tecolutlensis">
<emphasis italics="true" pageId="12" pageNumber="107">S. tecolutlensis</emphasis>
</taxonomicName>
, cirrostyles are longer than cirrophores in posterior chaetigers. Also, the cirrophore/cirrostyle lengths ratios in
<taxonomicName genus="S." lsidName="S. elisae" pageId="12" pageNumber="107" rank="species" species="elisae">
<emphasis italics="true" pageId="12" pageNumber="107">S. elisae</emphasis>
</taxonomicName>
sp. nov. are greater than in the other species, especially in anterior (5.5-6.0) and middle (2.5-3.0) chaetigers. Finally, the blades of the neuropodial heterogomph falcigers are denticulated, whereas in the remaining species they are smooth.
</paragraph>
<paragraph pageId="12" pageNumber="107">
The notopodial dorsal ligules exhibit a high variation in their length as shown in the cirrophore/ notopodial dorsal and notopodial ventral ligules/notopodial dorsal ligules ratios in anterior (2.3-7.1 and 1.3-3.4, respectively) and middle (1.3-3.8 in both ratios) chaetigers. This variability in the size of the notopodial dorsal ligules was also observed in specimens of
<taxonomicName genus="S." lsidName="S. lackeyi" pageId="12" pageNumber="107" rank="species" species="lackeyi">
<emphasis italics="true" pageId="12" pageNumber="107">S. lackeyi</emphasis>
</taxonomicName>
comb. n., and
<taxonomicName genus="S." lsidName="S. martini" pageId="12" pageNumber="107" rank="species" species="martini">
<emphasis italics="true" pageId="12" pageNumber="107">S. martini</emphasis>
</taxonomicName>
, but the ratios are less variable.
</paragraph>
</subSubSection>
</treatment>
</document>
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