treatments-xml/data/D4/19/FC/D419FC558F4908BD54F063B008959C95.xml

<document ID-DOI="http://dx.doi.org/10.3897/zookeys.569.5984" ID-GBIF-Dataset="9e0e0067-e6c5-4c19-beaa-a48efa6c2354" ID-PMC="PMC4829678" ID-Pensoft-Pub="1313-2970-569-37" ID-PubMed="27110149" ID-ZBK="DF7C359533DC49E088F164880C804AD8" ModsDocAuthor="" ModsDocDate="2016" ModsDocID="1313-2970-569-37" ModsDocOrigin="ZooKeys 569" ModsDocTitle="A new genus of Neelidae (Collembola) from Mexican caves" checkinTime="1456392269755" checkinUser="pensoft" docAuthor="Papac, Vladimir &amp; Palacios-Vargas, Jose G." docDate="2016" docId="D419FC558F4908BD54F063B008959C95" docLanguage="en" docName="ZooKeys 569: 37-51" docOrigin="ZooKeys 569" docSource="http://dx.doi.org/10.3897/zookeys.569.5984" docTitle="Spinaethorax Papac &amp; Palacios-Vargas, 2016, gen. n." docType="treatment" docUuid="9E27A3C3-9464-4A6A-94B8-5BB470502D2C" docUuidSource="ZooBank" docVersion="5" lastPageNumber="44" masterDocId="A56B85160E63220DFF800F5BFFFC6D4C" masterDocTitle="A new genus of Neelidae (Collembola) from Mexican caves" masterLastPageNumber="51" masterPageNumber="37" pageNumber="39" updateTime="1668162744473" updateUser="ExternalLinkService">
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<mods:titleInfo>
<mods:title>A new genus of Neelidae (Collembola) from Mexican caves</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Papac, Vladimir</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Palacios-Vargas, Jose G.</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
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<mods:title>ZooKeys</mods:title>
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<mods:date>2016</mods:date>
<mods:detail type="volume">
<mods:number>569</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>37</mods:start>
<mods:end>51</mods:end>
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<mods:url>http://dx.doi.org/10.3897/zookeys.569.5984</mods:url>
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<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.569.5984</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-569-37</mods:identifier>
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<treatment ID-GBIF-Taxon="127891589" LSID="urn:lsid:zoobank.org:act:9E27A3C3-9464-4A6A-94B8-5BB470502D2C" httpUri="http://treatment.plazi.org/id/D419FC558F4908BD54F063B008959C95" lastPageId="7" lastPageNumber="44" pageId="2" pageNumber="39">
<subSubSection pageId="2" pageNumber="39" type="multiple">
<paragraph pageId="2" pageNumber="39">Taxon classification Animalia Collembola Neelidae</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="39" type="nomenclature">
<paragraph pageId="2" pageNumber="39">
<taxonomicName LSID="http://zoobank.org/9E27A3C3-9464-4A6A-94B8-5BB470502D2C" class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="genus">Spinaethorax</taxonomicName>
<taxonomicNameLabel pageId="2" pageNumber="39">gen. n.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="39" type="diagnosis">
<paragraph pageId="2" pageNumber="39">Diagnosis.</paragraph>
<paragraph pageId="2" pageNumber="39">
A genus of the 
<taxonomicName family="Neelidae" lsidName="" pageId="2" pageNumber="39" rank="family">Neelidae</taxonomicName>
Folsom, 1896 with the following diagnostic characters:
</paragraph>
<paragraph pageId="2" pageNumber="39">
Habitus of 
<taxonomicName family="Neelidae" lsidName="" pageId="2" pageNumber="39" rank="family">Neelidae</taxonomicName>
. Small size, about 0.6 mm. Color white. Tegumentary grain fine and uniform. Apex of head with sword-like spines, body with several such spines, mainly around sensorial fields. Ant. III and IV fused and Ant. III with small globular sensillum in proximal position. Anterior labral setae R1 and R2 thick, curved and smooth. Oral fold with 1+1 sword-like macrosetae. Basomedian field of labium furnished with 6+6 setae. Presence of 3 setae around abdominal sensory fields, no E3 spine/setae on dd. Mid abdomen with swollen sensilla s3 and s3'. Base of Abd. IV sternite with 1+1 neosminthuroid setae, smooth and with pointed tip.
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="39" type="type species">
<paragraph pageId="2" pageNumber="39">Type species.</paragraph>
<paragraph pageId="2" pageNumber="39">
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
(Palacios-Vargas &amp; 
<normalizedToken originalValue="Sánchez">Sanchez</normalizedToken>
, 1999), comb. n.
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="39" type="redescription">
<paragraph pageId="2" pageNumber="39">Redescription.</paragraph>
<paragraph pageId="2" pageNumber="39">Figs 1-15.</paragraph>
<caption pageId="2" pageNumber="39">
<paragraph pageId="2" pageNumber="39">
Figures 1-5. 
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
. 1 dorsal chaetotaxy of head 2 anterior part of head with labrum, of-oral fold 3 mandible 4 maxilla 5 labium with ventral head back, bfl-basolateral field of labium.
</paragraph>
</caption>
<caption pageId="2" pageNumber="39">
<paragraph pageId="2" pageNumber="39">
Figures 6-10. 
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
. 6 thoracic and abdominal chaetotaxy with abdominal sensory field enlarged 7 ventral tube in lateral view 8 tenaculum 9 male genital plate in lateral view, arrow shows anterior direction 10 female genital plate frontal view, av-anal valve setae, nch-neosminthuroid setae.
</paragraph>
</caption>
<caption pageId="2" pageNumber="39">
<paragraph pageId="2" pageNumber="39">
Figures 11-12. 
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
. 11 dorsal Ant. 
<normalizedToken originalValue="I–IV">I-IV</normalizedToken>
, with Ant. IV organ enlarged 12 furcula, posterior view with anterior seta enlarged.
</paragraph>
</caption>
<caption pageId="2" pageNumber="39">
<paragraph pageId="2" pageNumber="39">
Figures 13-15. 
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
. 13 leg I 14 leg II 15 leg III, with detail of each feet complex.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="2" pageNumber="39" type="type material">
<paragraph pageId="2" pageNumber="39">Type material.</paragraph>
<paragraph pageId="2" pageNumber="39">
Holotype: female mounted on slide. Original label: 23/00/1991, Mexico, Campeche, Cueva Xtancumbilxunaan (cave), 29.xii.1996, A. 
<normalizedToken originalValue="Ruíz">Ruiz</normalizedToken>
and S. Aguilar col., ext. soil. Paratypes: 1 female on slide, 23.viii. 1991, J. G. Palacios col., direct collection and 2 juveniles on slides, the same data as the holotype. Type material deposited at Facultad de Ciencias, UNAM.
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="39" type="materials_examined">
<paragraph pageId="2" pageNumber="39">Other material.</paragraph>
<paragraph pageId="2" pageNumber="39">
Mexico, Campeche, Cueva 
<normalizedToken originalValue="Actún">Actun</normalizedToken>
Guachapil (cave), 1 male, 1 female and 2 juveniles on slides. Original label: 14/iv/2012, 22.iii.1997, A. Ruiz and S. Aguilar col., ext. guano; 1 female on slide, 29.v. 1997, J. G. Palacios col., ext. guano. Material deposited at Facultad de Ciencias, UNAM.
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="39" type="diagnosis">
<paragraph pageId="2" pageNumber="39">Diagnosis.</paragraph>
<paragraph pageId="2" pageNumber="39">Unpaired seta a0 between antennal basis. Labral chaetae R1 and R2 thick, curved and smooth. Oral fold with 1+1 sword-like macrosetae. Basomedian field of labium with 6+6 setae. Ant. III with small globular sensillum. Manubrium with 4+4 posterior setae. Mucro with both lamellae serrated and with rounded tip.</paragraph>
</subSubSection>
<subSubSection lastPageId="7" lastPageNumber="44" pageId="2" pageNumber="39" type="description">
<paragraph pageId="2" pageNumber="39">Description.</paragraph>
<paragraph pageId="2" pageNumber="39">
For lengths of different character see Table 1. Body length 0.5-0.7 mm. Habitus globular, as other members of 
<taxonomicName family="Neelidae" lsidName="" pageId="2" pageNumber="39" rank="family">Neelidae</taxonomicName>
. No pigmentation, cuticle finely granulated, linea ventralis without crossing with integumentary channels on ventral head back. Mid and hind Abd. with numerous spine-like microsetae, stouter spines around all sensory fields on body and apex of head.
</paragraph>
<caption pageId="2" pageNumber="39">
<paragraph pageId="2" pageNumber="39">
Table 1. Lengths (µm, mean in parenthesis) of different morphological characters of 
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
comb. n. (male, females and juvenile separately).
</paragraph>
</caption>
<paragraph pageId="2" pageNumber="39">
<table pageId="2" pageNumber="39">
<tr pageId="2" pageNumber="39">
<th colspan="1" pageId="2" pageNumber="39" rowspan="1">Body part</th>
<th colspan="1" pageId="2" pageNumber="39" rowspan="1">
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
comb. n. male
</th>
<th colspan="1" pageId="2" pageNumber="39" rowspan="1">
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
comb. n., females
</th>
<th colspan="1" pageId="2" pageNumber="39" rowspan="1">
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="2" pageNumber="39" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
comb. n., juvenile
</th>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">Ant</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">Ant</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">Ant</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">Ant</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">Ant</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">dp</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">dd</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">1</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">2</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">3</td>
</tr>
<tr pageId="2" pageNumber="39">
<td colspan="1" pageId="2" pageNumber="39" rowspan="1">4</td>
</tr>
</table>
</paragraph>
<paragraph lastPageId="4" lastPageNumber="41" pageId="2" pageNumber="39">
Head. Head length and width 215 and 145 
<normalizedToken originalValue="µm">µm</normalizedToken>
, respectively. No eyes. Head with smooth, pointed ordinary setae and spines of different width and length (Fig. 1). Frontal part with ordinary setae (lateral ones longer than axial, 26-30 
<normalizedToken originalValue="µm">µm</normalizedToken>
, respectively 10-16 
<normalizedToken originalValue="µm">µm</normalizedToken>
), seta a0 present; medial part between posterior s.f. ordinary or slightly spine-like setae (20 
<normalizedToken originalValue="µm">µm</normalizedToken>
); posterior part with 3+3 stouter spines IL1-IL3 of different lengths (28-42 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 1+1 smaller axial spines IL4 (17-21 
<normalizedToken originalValue="µm">µm</normalizedToken>
), others similar to smaller setae (10-14 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Labrum with 5,5,4 setae, 4 prelabrals. Pattern of labral setae (Fig. 2) after 
<bibRefCitation author="Massoud, Z" journalOrPublisher="Revue d'Ecologie et Biologie du Sol" pageId="9" pageNumber="46" pagination="625 - 637" title="Revision du genre Neelus Folsom 1896 (Collembola) et description de Neeluslabralisetosus n. sp. des Iles Salomon." volume="4" year="1967">Massoud and Vannier (1967)</bibRefCitation>
: a-row: 2R1 + 2R2, m-row: 
<pageBreakToken pageId="3" pageNumber="40" start="start">m</pageBreakToken>
+ 2r1 + 2r2 and p-row with 5 ordinary setae (11 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Anterior R1 and R2 slightly thick, smooth and curved, R2 (11 
<normalizedToken originalValue="µm">µm</normalizedToken>
) longer than R1 (9 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Medial setae (m-row) equal (11 
<normalizedToken originalValue="µm">µm</normalizedToken>
), smooth median setae in one line with others. Maxillary palp simple, with 1 enlarged terminal seta (18 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 1 basal seta (14 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 1 sublobal hair (Fig. 2). Basomedian field of labium with 6+6 setae (Fig. 5), median ones slightly longer 
<pageBreakToken pageId="4" pageNumber="41" start="start">(</pageBreakToken>
12 
<normalizedToken originalValue="µm">µm</normalizedToken>
) than others (10 
<normalizedToken originalValue="µm">µm</normalizedToken>
); basolateral field with 1+1 setae (10 
<normalizedToken originalValue="µm">µm</normalizedToken>
), oral fold with 1+1 basal setae (8 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 1+1 terminal sword-like macrosetae (25-30 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Head with 3+3 smooth postmedian setae ventrally (Fig. 5); 2+2 anterior setae equal (16 
<normalizedToken originalValue="µm">µm</normalizedToken>
); posterior 1+1 seta slightly curved at tip (18 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Mandible with 4 apical teeth, medial ones longer (Fig. 3). Maxilla as in Fig. 4.
</paragraph>
<paragraph pageId="4" pageNumber="41">
Thorax and abdomen (Fig. 6). Dorsally with ordinary setae, swollen sensilla s1, s2, s3, s3', spines of different size (4-6 and 25-45 
<normalizedToken originalValue="μm">μm</normalizedToken>
), 6+6 wax rods (wrc1, 2, 4, 6-8) with straight setae (3-4 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 2+2 (wrc 3 and 5) with thicker and longer straight setae (6-7 
<normalizedToken originalValue="µm">µm</normalizedToken>
). All wrc placed in small cuticular depressions. Trichobothria or their sockets not observed. Th. II with 3+3 ordinary setae (12-14 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 6+6 stouter spines (25-36 
<normalizedToken originalValue="µm">µm</normalizedToken>
) around thoracic sensory fields, axial spines smaller (25 
<normalizedToken originalValue="µm">µm</normalizedToken>
); sensory fields at leg II base with 2+2 ordinary setae (20 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 3+3 stouter spines, anterior ones longer (45 
<normalizedToken originalValue="µm">µm</normalizedToken>
) than posterior (26-28 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 1+1 lateral sensillum s1 (8 
<normalizedToken originalValue="µm">µm</normalizedToken>
) broadened at tip and 1+1 swollen transparent rod with bifid tip and no base (8 
<normalizedToken originalValue="µm">µm</normalizedToken>
) above s.f. of leg II. Th. III with 5+5 ordinary setae (6-8 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 4+4 wrc (wrc 1-4) and several small spine-like microsetae, whose overall number is not seen clearly; at leg III base with 1+1 ordinary seta (16 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 3+3 stouter spines, medial ones longer (42 
<normalizedToken originalValue="µm">µm</normalizedToken>
) than lateral (22 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 2+2 wrc (5, 6). Anterior Abd. medially with 1+1 wrc 7 and 2+2 swollen sensilla s3 and s3'; hind Abd. with abdominal sensory fields, which are surrounded by 2+2 ordinary setae (12 and 18 
<normalizedToken originalValue="μm">μm</normalizedToken>
), 1+1 stouter spines (30 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 1+1 swollen sensilla s2 and 1+1 wrc 8 above Abd. s.f. Dorso and dorso-lateral anterior and hind abdomen covered with numerous spine-like microsetae (4-6 
<normalizedToken originalValue="μm">μm</normalizedToken>
) arranged as in Figs 6 and 10. Their overall number is not seen clearly. Abd. tergum VI with 3+3 setae (17 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 1 unpaired axial seta (14 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Anal complex with three anal valves, each with on seta (7 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Abd. VI sternum with 4+4 setae (18-20 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 2+2 very small globular structures (1-2 
<normalizedToken originalValue="µm">µm</normalizedToken>
) next to anal valve setae. Female genital plate (Abd. V sternum, Fig. 10) with 4+4 setae (8-11 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 1+1 axial microsetae (4 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Male genital plate with 5+5 ordinary setae (12 
<normalizedToken originalValue="µm">µm</normalizedToken>
) arranged in circle and with 2+2 spine-like setae (7 
<normalizedToken originalValue="µm">µm</normalizedToken>
) difficult to observe (Fig. 9), laterally surrounded with 4+4 setae (18 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Abd. IV sternum with 3+3 setae in one row (18-20 
<normalizedToken originalValue="µm">µm</normalizedToken>
), one seta more laterally and 1+1 distal setae (8 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Lateral part of Abd. IV sternum with 1+1 short and pointed neosminthuroid setae (6 
<normalizedToken originalValue="µm">µm</normalizedToken>
) (Fig. 10).
</paragraph>
<paragraph lastPageId="6" lastPageNumber="43" pageId="4" pageNumber="41">
Appendages. Ant. III and IV not separated (Fig. 11). Length of antennae 140 
<normalizedToken originalValue="µm">µm</normalizedToken>
, ratio antenna/head = 0.65; length of antennal segments I, II, 
<normalizedToken originalValue="III–IV">III-IV</normalizedToken>
as 11, 26 and 103 
<normalizedToken originalValue="µm">µm</normalizedToken>
. Ant. I furnished with 3 short setae (8-10 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Ant. II with 1 medial seta and 5 apical setae arranged in a whorl. Ant. III organ consists of 2 transparent rods (7 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 1 leaf-like transparent sensillum Sg (12 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and spine-like seta (7 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Proximal part of Ant. III bears 1 globular sensillum Sg (4 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Ant. IV with 13 curved macrosensilla S finely blunt at tip (24-32 
<normalizedToken originalValue="µm">µm</normalizedToken>
); subapically with 1 long and thick subapical sensillum Sy (16-18 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and with 1 thick shorter apical sensillum Sx broadened at tip (12-14 
<normalizedToken originalValue="µm">µm</normalizedToken>
); Ant. IV organ like a tiny, hardly visible spine (5 
<normalizedToken originalValue="µm">µm</normalizedToken>
); apically with curved setae a and sa apical in position (10 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Complete chaetotaxy of antennae provided in Table 2. Setae numbers of legs 
<normalizedToken originalValue="I–III">I-III</normalizedToken>
(Figs 13-15): scx I: 1, 1, 3 (one spine); scx II: 
<pageBreakToken pageId="5" pageNumber="42" start="start">1</pageBreakToken>
, 1, 1; coxae: 1, 1, 2; trochantera: 4, 3, 3; femora: 8, 8, 8 and tibiotarsi: 13, 14, 13. Thin meso- or microsetae as in following numbers on leg I: femur with 2; on leg II: femur with 1; on leg III: trochanter with 1, femur with 1. For complete setation of legs see Table 3. Tibiotarsal tenent hairs ordinary, straight and pointed (16-18 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Unguis narrow, in distal part bended; both unguis and unguiculus unequally long in leg I, II and III: unguis 31, 27 and 26 
<normalizedToken originalValue="µm">µm</normalizedToken>
, respectively, unguiculus 14, 15 and 16 
<normalizedToken originalValue="µm">µm</normalizedToken>
, 
<pageBreakToken pageId="6" pageNumber="43" start="start">respectively</pageBreakToken>
. Length ratio unguis I, II, III / ti. I, II, III width (31, 27, 26/ 17, 16, 17 
<normalizedToken originalValue="µm">µm</normalizedToken>
) = 1.8, 1.7, 1.5. Unguis I and III with three auxiliary lamellae la, lp, Bp, unguis II with only lp and Bp (Fig. 14); unguiculus I with small internal tooth on distal part, II and III untoothed and III with bended tip; unguiculi without apical filament and basal lamellae. Ventral tube with 2+2 distal setae and without posterior lobe (Fig. 7). Retinaculum with 3+3 teeth, no setae on corpus (Fig. 8). Furcula well developed (Fig. 12), length of manubrium, dens (dp and dd) and mucro: 56, 31, 71 and 74 
<normalizedToken originalValue="µm">µm</normalizedToken>
, respectively. Manubrium with 4+4 setae posteriorly, lateral ones shorter (10-15 
<normalizedToken originalValue="µm">µm</normalizedToken>
) than axial (16-20 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Dens in proximal part (dp) with 2+2 posterior setae, lateral ones (14 
<normalizedToken originalValue="µm">µm</normalizedToken>
) shorter than those axial (22 
<normalizedToken originalValue="µm">µm</normalizedToken>
); distal part (dd) apically with 2+2 broad, blunt lateral spines (9 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 1 medial sharp spine (7 
<normalizedToken originalValue="µm">µm</normalizedToken>
) on anterior side; with 2 external (E1-E2) posteriorly and 2 internal (J1-J2) spines (6-7 
<normalizedToken originalValue="µm">µm</normalizedToken>
each, distal with short apical filament), and 1 medial, subapical seta (18 
<normalizedToken originalValue="µm">µm</normalizedToken>
). Mucro with serrated lamellae and rounded tip. Base of mucro furnished with small scale without base. Middle mucro width 7 
<normalizedToken originalValue="µm">µm</normalizedToken>
.
</paragraph>
<caption pageId="6" pageNumber="43">
<paragraph pageId="6" pageNumber="43">
Table 2. Chaetotaxy of antennae in 
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="6" pageNumber="43" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
comb. n.
</paragraph>
</caption>
<paragraph pageId="6" pageNumber="43">
<table pageId="6" pageNumber="43">
<tr pageId="6" pageNumber="43">
<th colspan="4" pageId="6" pageNumber="43" rowspan="1">
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="6" pageNumber="43" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
comb. n.
</th>
</tr>
<tr pageId="6" pageNumber="43">
<th colspan="1" pageId="6" pageNumber="43" rowspan="1">Chaetae</th>
<th colspan="1" pageId="6" pageNumber="43" rowspan="1">S</th>
<th colspan="1" pageId="6" pageNumber="43" rowspan="1">Sg</th>
<th colspan="1" pageId="6" pageNumber="43" rowspan="1">Misc</th>
</tr>
<tr pageId="6" pageNumber="43">
<td colspan="1" pageId="6" pageNumber="43" rowspan="1">Ant</td>
</tr>
<tr pageId="6" pageNumber="43">
<td colspan="1" pageId="6" pageNumber="43" rowspan="1">Ant</td>
</tr>
<tr pageId="6" pageNumber="43">
<td colspan="1" pageId="6" pageNumber="43" rowspan="1">Ant</td>
</tr>
<tr pageId="6" pageNumber="43">
<td colspan="1" pageId="6" pageNumber="43" rowspan="1">Ant</td>
</tr>
</table>
</paragraph>
<caption ID-Table-UUID="B9A4955C655DA9A458F4FAC8CCE57B21" httpUri="http://table.plazi.org/id/B9A4955C655DA9A458F4FAC8CCE57B21" pageId="6" pageNumber="43">
<paragraph pageId="6" pageNumber="43">
Table 3. Setation of legs in 
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="6" pageNumber="43" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
comb. n.
</paragraph>
</caption>
<paragraph pageId="6" pageNumber="43">
<table pageId="6" pageNumber="43">
<tr pageId="6" pageNumber="43">
<th colspan="3" pageId="6" pageNumber="43" rowspan="1">
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="6" pageNumber="43" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
comb. n.
</th>
</tr>
<tr pageId="6" pageNumber="43">
<th colspan="1" pageId="6" pageNumber="43" rowspan="1">Leg I</th>
<th colspan="1" pageId="6" pageNumber="43" rowspan="1">Leg II</th>
<th colspan="1" pageId="6" pageNumber="43" rowspan="1">Leg III</th>
</tr>
</table>
</paragraph>
<paragraph lastPageId="7" lastPageNumber="44" pageId="6" pageNumber="43">
Sensory fields (Figs 1, 6, 14 and 15). 6+6 s.f. placed in depressions each with secretory rod (10-12 
<normalizedToken originalValue="µm">µm</normalizedToken>
), i.e. blunt seta with basal part inserted on cuticle and placed in upper margin of the field. Following arrangement: (a) anterior and posterior field on head (s.f. 1, 15 
<normalizedToken originalValue="×">x</normalizedToken>
10 and s.f. 2, 20 
<normalizedToken originalValue="×">x</normalizedToken>
10 
<normalizedToken originalValue="µm">µm</normalizedToken>
) each with secretory rod and 1 seta on margin (14-18 
<normalizedToken originalValue="µm">µm</normalizedToken>
); (b) thoracic field (s.f. 3; 35 
<normalizedToken originalValue="×">x</normalizedToken>
20 
<normalizedToken originalValue="µm">µm</normalizedToken>
) with secretory rod, 3 internal spines 
<pageBreakToken pageId="7" pageNumber="44" start="start">(</pageBreakToken>
4 
<normalizedToken originalValue="µm">µm</normalizedToken>
) arranged in triangle, 2 external marginal setae (12-14 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 6 sword-like spines of different lengths (25-36 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 3 spines are in anterior position and 3 spines above s.f. in axial position; (c) fields at base of legs II and III (s.f. 4, 5; 20 
<normalizedToken originalValue="×">x</normalizedToken>
15 
<normalizedToken originalValue="µm">µm</normalizedToken>
) each with secretory rod, 2 internal spines (4 
<normalizedToken originalValue="µm">µm</normalizedToken>
) in s.f. 4 and 1 internal spine (4 
<normalizedToken originalValue="µm">µm</normalizedToken>
) in s.f. 5. S.f 4 with 2 marginal external setae (20 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 3 stouter sword-like spines, medial ones longer (45 
<normalizedToken originalValue="µm">µm</normalizedToken>
) than lateral (26-28 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 1 lateral sensillum s1 broadened at tip (8 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 1 swollen rod with split tip and without base (8 
<normalizedToken originalValue="µm">µm</normalizedToken>
) above s.f. 4. S.f. 5 with 1 marginal external seta (16 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 3 stouter sword-like spines, medial ones longer (42 
<normalizedToken originalValue="µm">µm</normalizedToken>
) than lateral (22 
<normalizedToken originalValue="µm">µm</normalizedToken>
); (d) abdominal field (s.f. 6; 30 
<normalizedToken originalValue="×">x</normalizedToken>
25 
<normalizedToken originalValue="µm">µm</normalizedToken>
) with secretory rod, 1 internal spine (4 
<normalizedToken originalValue="µm">µm</normalizedToken>
), 2 marginal ordinary setae (12 and 18 
<normalizedToken originalValue="μm">μm</normalizedToken>
), 1 sword-like spine above s.f. (30 
<normalizedToken originalValue="µm">µm</normalizedToken>
) and 1 swollen sensillum s2 on the margin of s.f. (6 
<normalizedToken originalValue="μm">μm</normalizedToken>
). Wrc 8 is located above Abd. s.f.
</paragraph>
<paragraph pageId="7" pageNumber="44">Both sexes known.</paragraph>
</subSubSection>
<subSubSection pageId="7" pageNumber="44" type="etymology">
<paragraph pageId="7" pageNumber="44">Etymology.</paragraph>
<paragraph pageId="7" pageNumber="44">The genus is named after the spine-like setae on thorax and abdomen.</paragraph>
</subSubSection>
<subSubSection pageId="7" pageNumber="44" type="distribution and ecology">
<paragraph pageId="7" pageNumber="44">Distribution and ecology.</paragraph>
<paragraph pageId="7" pageNumber="44">
<taxonomicName class="Collembola" family="Neelidae" genus="Spinaethorax" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Spinaethorax spinotricosus" order="Neelipleona" pageId="7" pageNumber="44" phylum="Arthropoda" rank="species" species="spinotricosus">Spinaethorax spinotricosus</taxonomicName>
is currently known from two caves and is putatively spread in the cave systems of 
<normalizedToken originalValue="Yucatán">Yucatan</normalizedToken>
Peninsula, mainly in places with accumulation of bat guano or other type of rich organic material.
</paragraph>
</subSubSection>
<subSubSection pageId="7" pageNumber="44" type="variation">
<paragraph pageId="7" pageNumber="44">Variation.</paragraph>
<paragraph pageId="7" pageNumber="44">The young have only one proximal seta on dens.</paragraph>
</subSubSection>
</treatment>
</document>