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<mods:title id="012EB4D3A3C1276119D3130BB9FEBEA8">Xoconochcothelphusa, a new genus for Ehecatusa chiapensis (Rodríguez &amp; Smalley, 1972), with notes on Spirothelphusa Pretzmann, 1965 (Crustacea: Decapoda: Pseudothelphusidae)</mods:title>
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<mods:affiliation id="2EDCF3655861221980FC4FD37120BC00">Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, 04510 Ciudad de México, Mexico.</mods:affiliation>
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<emphasis id="2FE3EA91FFABFFC6C8A1993CFF4F5A3A" bold="true" box="[151,278,1881,1908]" italics="true" pageId="6" pageNumber="177">Ehecatusa</emphasis>
<bibRefCitation id="79064B72FFABFFC6C928993FFFB15A3A" author="Ng, P. K. L. &amp; Low, M. E. Y." box="[286,488,1882,1908]" pageId="6" pageNumber="177" pagination="34 - 46" refId="ref15233" refString="Ng, P. K. L. &amp; Low, M. E. Y. (2010) On the generic nomenclature of nine brachyuran names, with four replacement names and two nomina protecta (Crustacea: Decapoda). Zootaxa, 2489 (1), 34 - 46. https: // doi. org / 10.11646 / zootaxa. 2489.1.2" type="journal article" year="2010">Ng &amp; Low, 2010</bibRefCitation>
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<emphasis id="2FE3EA91FFABFFC6C8A199FBFF445AF8" box="[151,285,1950,1974]" italics="true" pageId="6" pageNumber="177">Epithelphusa</emphasis>
Rodríguez &amp; Smalley
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, in
<treatmentCitation id="9C361092FFABFFC6CA1299FBFCB15AF9" author="Smalley, A. E." box="[548,744,1950,1975]" page="103" pageId="6" pageNumber="177" year="1970">
<bibRefCitation id="79064B72FFABFFC6CA1299FBFCB15AF9" author="Smalley, A. E." box="[548,744,1950,1975]" pageId="6" pageNumber="177" pagination="96 - 106" refId="ref16153" refString="Smalley, A. E. (1970) A new genus of freshwater crabs from Guatemala, with a key to the Middle American genera (Crustacea, Decapoda, Pseudothelphusidae). American Midland Naturalist, 83 (1), 96 - 106. https: // doi. org / 10.2307 / 2424009" type="journal article" year="1970">Smalley, 1970: 103</bibRefCitation>
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(list), 105 (key).—
<treatmentCitation id="9C361092FFABFFC6CB9E99FBFADB5AF9" author="Pretzmann, G." box="[936,1154,1950,1975]" page="109" pageId="6" pageNumber="177" year="1972">
<bibRefCitation id="79064B72FFABFFC6CB9E99FBFADB5AF9" author="Pretzmann, G." box="[936,1154,1950,1975]" pageId="6" pageNumber="177" pagination="15 - 182" refId="ref15589" refString="Pretzmann, G. (1972) Die Pseudothelphusidae (Crustacea, Brachyura). Zoologica, 42 (120), Pt 1, 15 - 182." type="journal article" year="1972">Pretzmann 1972: 109</bibRefCitation>
</treatmentCitation>
.—
<treatmentCitation id="9C361092FFABFFC6CC9699FAFB275AF9" author="Pretzmann, G." box="[1184,1406,1951,1975]" page="297" pageId="6" pageNumber="177" year="1974">
<bibRefCitation id="79064B72FFABFFC6CC9699FAFB275AF9" author="Pretzmann, G." box="[1184,1406,1951,1975]" pageId="6" pageNumber="177" pagination="294 - 302" refId="ref15618" refString="Pretzmann, G. (1974) Zur Systematik Der Pseudothelphusidae (Decapoda, Brachyura). Crustaceana, 23 (3), 294 - 302. https: // doi. org / 10.1163 / 156854074 X 00820" type="journal article" year="1974">Pretzmann 1974: 297</bibRefCitation>
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.—
<treatmentCitation id="9C361092FFABFFC6C8F199D8FC7A5A9B" author="Rodriguez, G. &amp; Smalley, A. E." box="[199,547,1981,2005]" page="75" pageId="6" pageNumber="177" year="1972">
<bibRefCitation id="79064B72FFABFFC6C8F199D8FC7A5A9B" author="Rodriguez, G. &amp; Smalley, A. E." box="[199,547,1981,2005]" pageId="6" pageNumber="177" pagination="69 - 112" refId="ref16049" refString="Rodriguez, G. &amp; Smalley, A. E. (1972) Los cangrejos de agua dulce de Mexico de la familia Pseudothelphusidae (Crustacea, Brachyura). Anales del Instituto de Biologia, Universidad Nacional Autonoma de Mexico, serie Ciencias del Mar y Limnologia, 40, 69 - 112." type="journal article" year="1972">Rodríguez &amp; Smalley 1972: 75-76</bibRefCitation>
</treatmentCitation>
.—
<treatmentCitation id="9C361092FFABFFC6CA7799D8FD415A9B" author="Rodriguez, G." box="[577,792,1981,2005]" page="126" pageId="6" pageNumber="177" year="1982">
<bibRefCitation id="79064B72FFABFFC6CA7799D8FD415A9B" author="Rodriguez, G." box="[577,792,1981,2005]" pageId="6" pageNumber="177" pagination="1 - 224" refId="ref15957" refString="Rodriguez, G. (1982) Les crabes d'eau douce d'Amerique. Famille des Pseudothelphusidae. Faune Tropicale, 22, 1 - 224." type="journal article" year="1982">Rodriguez 1982: 126</bibRefCitation>
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.—
<treatmentCitation id="9C361092FFABFFC6CB0399D8FACA5A9B" author="Villalobos-Hiriart, J. L. &amp; Cantu Diaz-Barriga, A. &amp; Lira-Fernandez, E." box="[821,1171,1981,2005]" page="287" pageId="6" pageNumber="177" year="1993">
<bibRefCitation id="79064B72FFABFFC6CB0399D8FACA5A9B" author="Villalobos-Hiriart, J. L. &amp; Cantu Diaz-Barriga, A. &amp; Lira-Fernandez, E." box="[821,1171,1981,2005]" pageId="6" pageNumber="177" pagination="267 - 290" refId="ref16748" refString="Villalobos-Hiriart, J. L., Cantu Diaz-Barriga, A. &amp; Lira-Fernandez, E. (1993) Los crustaceos de agua dulce de Mexico. Revista de la Sociedad de Mexicana de Historia Natural Especial, 44, 267 - 290." type="journal article" year="1993">
Villalobos-Hiriart
<emphasis id="2FE3EA91FFABFFC6CBC299DBFA795A9B" box="[1012,1056,1981,2005]" italics="true" pageId="6" pageNumber="177">et al</emphasis>
. 1993: 287
</bibRefCitation>
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(list).—
<treatmentCitation id="9C361092FFABFFC6CCD599D8FF4E5ABA" author="Villalobos-Hiriart, J. L." page="2" pageId="6" pageNumber="177" year="2005">
<bibRefCitation id="79064B72FFABFFC6CCD599D8FF4E5ABA" author="Villalobos-Hiriart, J. L." pageId="6" pageNumber="177" refId="ref16458" refString="Villalobos-Hiriart, J. L. (2005) Sistematica de los cangrejos de agua dulce de Mexico, Tribu Pseudothelphusini Ortmann, 1897 (Crustacea: Decapoda: Brachyura: Pseudothelphusidae). Analisis filogenetico, biogeografico y descripcion de especies nuevas. Ph. D. Thesis, Posgrado en Ciencias Biologicas, Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Mexico City, 363 pp." type="book" year="2005">Villalobos-Hiriart 2005: 2</bibRefCitation>
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, 3 (tabla 1), 4, 7, 8, 10, 14-15, 17, 22, 51-53, 58, 59, 85, 87-89, 96, 105, 175, 181, 183.—Villalobos-Hiriart &amp; Álvarez 2008: 248 (tabla 1), 284, 299 (list).—
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<bibRefCitation id="79064B72FFAAFFC7CA939EF2FD2B5DE1" author="Ng, P. K. &amp; Guinot, D. &amp; Davie, P. J. F." box="[677,882,151,175]" pageId="7" pageNumber="178" pagination="1 - 286" refId="ref15180" refString="Ng, P. K. L, Guinot, D., Davie, P. J. F. (2008) Systema Brachyurorum: Part I. An annotated checklist of extant brachyuran crabs of the world. The Raffles Bulletin of Zoology, 17, 1 - 286." type="journal article" year="2008">
Ng
<emphasis id="2FE3EA91FFAAFFC7CAFB9EF2FCA55DE1" box="[717,764,151,175]" italics="true" pageId="7" pageNumber="178">et al</emphasis>
. 2008: 173
</bibRefCitation>
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(list).—
<treatmentCitation id="9C361092FFAAFFC7CBF39EF2FB4F5DE1" author="Villalobos, J. L. &amp; Alvarez, F." box="[965,1302,151,175]" httpUri="http://treatment.plazi.org/id/038087A436283C68FE337E41BEFEFE4C" page="466" pageId="7" pageNumber="178" year="2010">
<bibRefCitation id="79064B72FFAAFFC7CBF39EF2FB4F5DE1" author="Villalobos, J. L. &amp; Alvarez, F." box="[965,1302,151,175]" pageId="7" pageNumber="178" pagination="457 - 481" refId="ref16627" refString="Villalobos, J. L. &amp; Alvarez, F. (2010) Phylogenetic analysis of the Mexican freshwater crabs of the tribe Pseudothelphusini (Decapoda: Brachyura: Pseudothelphusidae). Zoological Journal of the Linnean Society, 160, 457 - 481. https: // doi. org / 10.1111 / j. 1096 - 3642.2009.00606. x" type="journal article" year="2010">Villalobos &amp; Alvarez 2010: 466</bibRefCitation>
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, 471, 472.—
<treatmentCitation id="9C361092FFAAFFC7C8F19ED0FFFC5D83" author="Ojeda-Escoto, J. C." box="[199,421,181,205]" page="8" pageId="7" pageNumber="178" year="2017">
<bibRefCitation id="79064B72FFAAFFC7C8F19ED0FFFC5D83" author="Ojeda-Escoto, J. C." box="[199,421,181,205]" pageId="7" pageNumber="178" refId="ref15299" refString="Ojeda-Escoto, J. C. (2017) Sistematica y biogeografia de los cangrejos de agua dulce de Mexico de la familia Pseudothelphusidae (Crustacea: Decapoda). Ph. D. Dissertation, Posgrado en Ciencias Biologicas, Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Mexico City, 124 pp." type="book" year="2017">Ojeda-Escoto 2017: 8</bibRefCitation>
</treatmentCitation>
, 10, 11.
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</paragraph>
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<treatmentCitation id="9C361092FFAAFFC7C8A19EB1FF845DA2" author="Ng, P. K. L. &amp; Low, M. E. Y." box="[151,477,212,236]" httpUri="http://treatment.plazi.org/id/03BF171DF87B282664A247E86886FC07" page="35" pageId="7" pageNumber="178" year="2010">
<taxonomicName id="DA974D00FFAAFFC7C8A19EB1FF845DA2" ID-CoL="7PCVS" authority="Ng &amp; Low, 2010: 35" authorityName="Ng &amp; Low" authorityPageNumber="35" authorityYear="2010" box="[151,477,212,236]" class="Malacostraca" family="Pseudothelphusidae" genus="Ehecatusa" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="178" phylum="Arthropoda" rank="genus">
<emphasis id="2FE3EA91FFAAFFC7C8A19EB1FF585DA2" box="[151,257,212,236]" italics="true" pageId="7" pageNumber="178">Ehecatusa</emphasis>
<bibRefCitation id="79064B72FFAAFFC7C93E9EB1FF845DA2" author="Ng, P. K. L. &amp; Low, M. E. Y." box="[264,477,212,236]" pageId="7" pageNumber="178" pagination="34 - 46" refId="ref15233" refString="Ng, P. K. L. &amp; Low, M. E. Y. (2010) On the generic nomenclature of nine brachyuran names, with four replacement names and two nomina protecta (Crustacea: Decapoda). Zootaxa, 2489 (1), 34 - 46. https: // doi. org / 10.11646 / zootaxa. 2489.1.2" type="journal article" year="2010">Ng &amp; Low, 2010: 35</bibRefCitation>
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[
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nom. nov. for
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<emphasis id="2FE3EA91FFAAFFC7CA489EB1FD5D5DA2" box="[638,772,212,236]" italics="true" pageId="7" pageNumber="178">Epithelphusa</emphasis>
Rodríguez &amp; Smalley
</taxonomicName>
, in
<bibRefCitation id="79064B72FFAAFFC7CC399EB1FAF85DA2" author="Smalley, A. E." box="[1039,1185,212,236]" pageId="7" pageNumber="178" pagination="96 - 106" refId="ref16153" refString="Smalley, A. E. (1970) A new genus of freshwater crabs from Guatemala, with a key to the Middle American genera (Crustacea, Decapoda, Pseudothelphusidae). American Midland Naturalist, 83 (1), 96 - 106. https: // doi. org / 10.2307 / 2424009" type="journal article" year="1970">Smalley, 1970</bibRefCitation>
].—
<treatmentCitation id="9C361092FFAAFFC7CCF39EB1FF725C45" author="Guinot, D. &amp; Hendrickx, M. E." page="478" pageId="7" pageNumber="178" year="2014">
<bibRefCitation id="79064B72FFAAFFC7CCF39EB1FF725C45" author="Guinot, D. &amp; Hendrickx, M. E." pageId="7" pageNumber="178" pagination="476 - 484" refId="ref14249" refString="Guinot, D. &amp; Hendrickx, M. E. (2014) Correct date and authorship of taxa of Middle American freshwater crabs described by Rodriguez &amp; Smalley (1972) (not 1969) and included in Smalley (1970) (Crustacea: Decapoda: Brachyura: Pseudothelphusidae). Zootaxa, 321 (4), 476 - 484. https: // doi. org / 10.11646 / zootaxa. 3821.4.6" type="journal article" year="2014">Guinot &amp; Hendrickx 2014: 478</bibRefCitation>
</treatmentCitation>
(table 1).—
<treatmentCitation id="9C361092FFAAFFC7C9AA9E96FC875C45" author="Alvarez, F. &amp; Villalobos, J. L." box="[412,734,243,267]" page="243" pageId="7" pageNumber="178" year="2016">
<bibRefCitation id="79064B72FFAAFFC7C9AA9E96FC875C45" author="Alvarez, F. &amp; Villalobos, J. L." box="[412,734,243,267]" pageId="7" pageNumber="178" pagination="237 - 266" refId="ref13700" refString="Alvarez, F. &amp; Villalobos, J. L. (2016) Freshwater decapod diversity and conservation in Mexico. In: Kawai, T. &amp; Cumberlidge, N. (Eds.), A global overview of the conservation of freshwater decapod crustaceans. Springer, Cham, pp. 237 - 266. https: // doi. org / 10.1007 / 978 - 3 - 319 - 42527 - 6 _ 8" type="book chapter" year="2016">Alvarez &amp; Villalobos 2016: 243</bibRefCitation>
</treatmentCitation>
.—
<treatmentCitation id="9C361092FFAAFFC7CACD9E96FDBF5C45" author="Ojeda-Escoto, J. C." box="[763,998,243,267]" page="10" pageId="7" pageNumber="178" year="2017">
<bibRefCitation id="79064B72FFAAFFC7CACD9E96FDBF5C45" author="Ojeda-Escoto, J. C." box="[763,998,243,267]" pageId="7" pageNumber="178" refId="ref15299" refString="Ojeda-Escoto, J. C. (2017) Sistematica y biogeografia de los cangrejos de agua dulce de Mexico de la familia Pseudothelphusidae (Crustacea: Decapoda). Ph. D. Dissertation, Posgrado en Ciencias Biologicas, Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Mexico City, 124 pp." type="book" year="2017">Ojeda-Escoto 2017: 10</bibRefCitation>
</treatmentCitation>
, 11, 16, 26 (fig.), 27, 40 (fig.), 41 (tabla 2.2), 90–91 (apéndice 2).—
<treatmentCitation id="9C361092FFAAFFC7C9919F74FD535C67" author="Villalobos-Hiriart, J. L. &amp; Kamanli, S. A. &amp; Alvarez, F. &amp; Garbout, A. &amp; Clark, P. F." box="[423,778,273,297]" page="156" pageId="7" pageNumber="178" year="2019">
<bibRefCitation id="79064B72FFAAFFC7C9919F74FD535C67" author="Villalobos-Hiriart, J. L. &amp; Kamanli, S. A. &amp; Alvarez, F. &amp; Garbout, A. &amp; Clark, P. F." box="[423,778,273,297]" pageId="7" pageNumber="178" pagination="151 - 161" refId="ref16793" refString="Villalobos-Hiriart, J. L., Kamanli, S. A., Alvarez, F., Garbout, A. &amp; Clark, P. F. (2019) Lobithelphusa mexicana Rodriguez, 1982 (Decapoda: Pseudothelphusidae): a reassessment of key characters and systematics. Zootaxa, 4586 (1), 151 - 161. https: // doi. org / 10.11646 / zootaxa. 4586.1.8" type="journal article" year="2019">
Villalobos-Hiriart
<emphasis id="2FE3EA91FFAAFFC7CA5E9F77FCCF5C67" box="[616,662,273,297]" italics="true" pageId="7" pageNumber="178">et al</emphasis>
. 2019: 156
</bibRefCitation>
</treatmentCitation>
(table 1).—
<treatmentCitation id="9C361092FFAAFFC7CBB79F76FA2D5C67" author="Alvarez, F. &amp; Ojeda, J. C. &amp; Souza-Carvalho, E. &amp; Villalobos, J. L. &amp; Magalhaes, C. &amp; Wehrtmann, I. S. &amp; Mantelatto, F. L." box="[897,1140,273,300]" page="12" pageId="7" pageNumber="178" year="2020">
<bibRefCitation id="79064B72FFAAFFC7CBB79F76FA2D5C67" author="Alvarez, F. &amp; Ojeda, J. C. &amp; Souza-Carvalho, E. &amp; Villalobos, J. L. &amp; Magalhaes, C. &amp; Wehrtmann, I. S. &amp; Mantelatto, F. L." box="[897,1140,273,300]" pageId="7" pageNumber="178" pagination="973 - 1001" refId="ref13779" refString="Alvarez, F., Ojeda, J. C., Souza-Carvalho, E., Villalobos, J. L., Magalhaes, C., Wehrtmann, I. S. &amp; Mantelatto, F. L. (2020) Revision of the higher taxonomy of Neotropical freshwater crabs of the family Pseudothelphusidae, based on multi-gene and morphological analyses. Zoological Journal of the Linnean Society, 93 (3), 973 - 1001. https: // doi. org / 10.1093 / zoolinnean / zlaa 162" type="journal article" year="2020">
Álvarez
<emphasis id="2FE3EA91FFAAFFC7CBE99F77FA545C67" box="[991,1037,273,297]" italics="true" pageId="7" pageNumber="178">et al</emphasis>
. 2020: 12
</bibRefCitation>
</treatmentCitation>
(table 4), 20, supplementary material (table 1).—
<treatmentCitation id="9C361092FFAAFFC7C9BB9F55FC915C06" author="Moreno-Juarez, E. G. &amp; Villalobos, J. L. &amp; Alvarez, F." box="[397,712,304,328]" page="2" pageId="7" pageNumber="178" year="2022">
<bibRefCitation id="79064B72FFAAFFC7C9BB9F55FC915C06" author="Moreno-Juarez, E. G. &amp; Villalobos, J. L. &amp; Alvarez, F." box="[397,712,304,328]" pageId="7" pageNumber="178" pagination="1 - 35" refId="ref14962" refString="Moreno-Juarez, E. G., Villalobos, J. L. &amp; Alvarez, F. (2022 a) Revision of the freshwater crabs of the genus Tehuana Rodriguez and Smalley in Smalley 1970 (Decapoda, Pseudothelphusidae), with the description of two new species. ZooKeys, 1117, 1 - 35. https: // doi. org / 10.3897 / zookeys. 1117.85362" type="journal article" year="2022">
Moreno-Juárez
<emphasis id="2FE3EA91FFAAFFC7CA039F54FC3B5C06" box="[565,610,304,328]" italics="true" pageId="7" pageNumber="178">et al</emphasis>
. 2022a: 2
</bibRefCitation>
</treatmentCitation>
.
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="558D6508FFAAFFC7C8A19F13FA9B5B8A" pageId="7" pageNumber="178" type="diagnosis">
<paragraph id="1D283683FFAAFFC7C8A19F13FA9B5B8A" blockId="7.[151,1437,374,2021]" pageId="7" pageNumber="178">
<emphasis id="2FE3EA91FFAAFFC7C8A19F13FF4B5CDE" bold="true" box="[151,274,374,400]" pageId="7" pageNumber="178">Diagnosis.</emphasis>
Carapace with dorsal surface slightly convex; posterior to cervical grooves with scattered short black bristles; cervical and mid frontal grooves wide, shallow, but marked; frontal portion regularly curved downward, to reach inferior frontal margin; superior frontal margin absent; lateral margin rounded and smooth. Orbits with internal inferior tooth, forming slender, grooved plate, slightly curved up, leaving orbital hiatus open, lodging antennal peduncle (
<figureCitation id="85AC2A06FFAAFFC7C9429C63FFE25F6E" box="[372,443,518,544]" captionStart="FIGURE 2" captionStartId="9.[152,255,1522,1546]" captionTargetBox="[151,1435,597,1498]" captionTargetId="figure-209@9.[151,1435,597,1498]" captionTargetPageId="9" captionText="FIGURE 2. Ehecatusa mixtepensis (Rodríguez &amp; Smalley, in Smalley, 1970), male holotype (cl 16.8 mm, cw 26.9 mm) (CNCR 309). A, carapace dorsal view; B, carapace frontal view; C, major chela." figureDoi="http://doi.org/10.5281/zenodo.13934117" httpUri="https://zenodo.org/record/13934117/files/figure.png" pageId="7" pageNumber="178">Fig. 2</figureCitation>
). Exopod of third maxilliped shorter than ischium lateral border (0.72 × its length). G1 straight, somewhat slender, with distal third twisted towards median axis of sternal surface of body; caudolateral border with crenate crest on distal half of principal axis, and two subapical prominences, distal one forming part of apical cavity border. In mesial view, marginal plate and caudal surface fused on distal third to form caudo-marginal projection ending apically in slender rectangular lobe (3.2 × as wide as long) cephalad directed and lying over distal portion of mesial process, with its superior and inferior borders straight; cephalic end rounded (
<figureCitation id="85AC2A06FFAAFFC7CCE89CDFFB635F9A" box="[1246,1338,698,724]" captionStart="FIGURE 3" captionStartId="10.[152,255,1086,1110]" captionTargetBox="[444,1143,237,1063]" captionTargetId="figure-57@10.[444,1144,237,1063]" captionTargetPageId="10" captionText="FIGURE 3. Ehecatusa mixtepensis (Rodríguez &amp; Smalley, in Smalley, 1970), male holotype (cl 16.8 mm, cw 26.9 mm) (CNCR 309), distal portion of left G1. A, mesial view; B, cephalic view; C, lateral view; D, caudal view; E, distal view. Abbreviations: Ac = apical cavity; Apclb = accessory prominences of caudolateral border; Ccac = central crest apical cavity; Ccclb = crenate crest of caudo-lateral border; Cmp = caudo-marginal projection; Cslp = conical spines of lateral process; Dlcmp = distal lobe of caudo-marginal projection; Map = marginal plate; Mas = marginal suture; Mep = mesial process; Sfac = setae field of apical cavity; Spch = spermatic channel." figureDoi="http://doi.org/10.5281/zenodo.13934119" httpUri="https://zenodo.org/record/13934119/files/figure.png" pageId="7" pageNumber="178">Fig. 3A</figureCitation>
). Mesial process in form of large, ax-shaped plate, cephalad directed, proximally elongated, with cephalic border straight through superior half and widely rounded along inferior one to reach caudal border; this border straight, slightly serrated and parallel regarding principal axis of G1. Marginal suture straight and evident along principal axis. Horns of lateral process slightly perceptible between principal axis and mesial process. In cephalic view, principal axis straight, lobe of caudo-marginal projection narrow, extending cephalically close to distal portion of mesial process and with final third curved mesially, separated from mesial plate (
<figureCitation id="85AC2A06FFAAFFC7CB509DF7FDE55EE2" box="[870,956,914,940]" captionStart="FIGURE 3" captionStartId="10.[152,255,1086,1110]" captionTargetBox="[444,1143,237,1063]" captionTargetId="figure-57@10.[444,1144,237,1063]" captionTargetPageId="10" captionText="FIGURE 3. Ehecatusa mixtepensis (Rodríguez &amp; Smalley, in Smalley, 1970), male holotype (cl 16.8 mm, cw 26.9 mm) (CNCR 309), distal portion of left G1. A, mesial view; B, cephalic view; C, lateral view; D, caudal view; E, distal view. Abbreviations: Ac = apical cavity; Apclb = accessory prominences of caudolateral border; Ccac = central crest apical cavity; Ccclb = crenate crest of caudo-lateral border; Cmp = caudo-marginal projection; Cslp = conical spines of lateral process; Dlcmp = distal lobe of caudo-marginal projection; Map = marginal plate; Mas = marginal suture; Mep = mesial process; Sfac = setae field of apical cavity; Spch = spermatic channel." figureDoi="http://doi.org/10.5281/zenodo.13934119" httpUri="https://zenodo.org/record/13934119/files/figure.png" pageId="7" pageNumber="178">Fig. 3B</figureCitation>
). Mesial process as laminate plate, cephalic border entire and regularly curved in proximal third; superior border slightly concave. Lateral process formed by two conical spines, like vertical horns laterally directed; proximal spine larger than distal; space between them somewhat convex; distal spine forming part of border of apical cavity. Principal axis with crenate crest on distal half of caudolateral border evident and armed with 11 subtriangular teeth. In lateral view, distal half of principal axis slightly inclined laterally; mesial process as big ax-shaped plate, proximally elongated, with cephalic border widely and slightly curved, reaching caudal border; this border straight and parallel regarding principal axis of gonopod (
<figureCitation id="85AC2A06FFAAFFC7CD599A0FFEE259E6" captionStart="FIGURE 3" captionStartId="10.[152,255,1086,1110]" captionTargetBox="[444,1143,237,1063]" captionTargetId="figure-57@10.[444,1144,237,1063]" captionTargetPageId="10" captionText="FIGURE 3. Ehecatusa mixtepensis (Rodríguez &amp; Smalley, in Smalley, 1970), male holotype (cl 16.8 mm, cw 26.9 mm) (CNCR 309), distal portion of left G1. A, mesial view; B, cephalic view; C, lateral view; D, caudal view; E, distal view. Abbreviations: Ac = apical cavity; Apclb = accessory prominences of caudolateral border; Ccac = central crest apical cavity; Ccclb = crenate crest of caudo-lateral border; Cmp = caudo-marginal projection; Cslp = conical spines of lateral process; Dlcmp = distal lobe of caudo-marginal projection; Map = marginal plate; Mas = marginal suture; Mep = mesial process; Sfac = setae field of apical cavity; Spch = spermatic channel." figureDoi="http://doi.org/10.5281/zenodo.13934119" httpUri="https://zenodo.org/record/13934119/files/figure.png" pageId="7" pageNumber="178">Fig. 3C</figureCitation>
). Lateral process formed by two conical spines in vertical position; proximal spine conical, acute, and larger than distal; space between them with short and sharp medial border; distal spine forming part of border of apical cavity, with rounded and excavated apex. Caudolateral border of principal axis with crenate crest on distal half armed with 11 subtriangular teeth, and two accessory prominences, the distal one as elongate spoon, incurved, forming part of caudal portion of crest delimiting apical cavity; subdistal cylindrical, smooth, with acute apex. Apical cavity partially visible, with scattered setae on surface. In caudal view, distal half of principal axis straight, distal crest delimiting apical cavity concave, rising by distal prominence of caudolateral border (
<figureCitation id="85AC2A06FFAAFFC7CC659B03FAF758CE" box="[1107,1198,1382,1408]" captionStart="FIGURE 3" captionStartId="10.[152,255,1086,1110]" captionTargetBox="[444,1143,237,1063]" captionTargetId="figure-57@10.[444,1144,237,1063]" captionTargetPageId="10" captionText="FIGURE 3. Ehecatusa mixtepensis (Rodríguez &amp; Smalley, in Smalley, 1970), male holotype (cl 16.8 mm, cw 26.9 mm) (CNCR 309), distal portion of left G1. A, mesial view; B, cephalic view; C, lateral view; D, caudal view; E, distal view. Abbreviations: Ac = apical cavity; Apclb = accessory prominences of caudolateral border; Ccac = central crest apical cavity; Ccclb = crenate crest of caudo-lateral border; Cmp = caudo-marginal projection; Cslp = conical spines of lateral process; Dlcmp = distal lobe of caudo-marginal projection; Map = marginal plate; Mas = marginal suture; Mep = mesial process; Sfac = setae field of apical cavity; Spch = spermatic channel." figureDoi="http://doi.org/10.5281/zenodo.13934119" httpUri="https://zenodo.org/record/13934119/files/figure.png" pageId="7" pageNumber="178">Fig. 3D</figureCitation>
). Cephalic portion of apical cavity and field of setae noticeable; central crest of apical cavity, straight and thin, delimiting field of setae. Caudolateral border with crenate crest on distal half with 11 subtriangular teeth; distal accessory prominence as elongate spoon, incurved, forming part of crest delimiting apical cavity; subdistal prominence cylindrical, smooth, with acute apex. Lateral process formed by two vertical horns, proximal spine larger, conical and acute; distal one shorter and triangular, continuing from apex cavity and laterally directed. In distal view, apical cavity subcircular, like shallow funnel, delimited by distal crests of apical lobe of caudo-marginal projection, caudal surface, distal prominences of caudolateral border and lateral process, mesial surface, and central crest; central crest as an internal extension of distal crest of mesial process (
<figureCitation id="85AC2A06FFAAFFC7CABD98E3FCBD5BEE" box="[651,740,1670,1696]" captionStart="FIGURE 3" captionStartId="10.[152,255,1086,1110]" captionTargetBox="[444,1143,237,1063]" captionTargetId="figure-57@10.[444,1144,237,1063]" captionTargetPageId="10" captionText="FIGURE 3. Ehecatusa mixtepensis (Rodríguez &amp; Smalley, in Smalley, 1970), male holotype (cl 16.8 mm, cw 26.9 mm) (CNCR 309), distal portion of left G1. A, mesial view; B, cephalic view; C, lateral view; D, caudal view; E, distal view. Abbreviations: Ac = apical cavity; Apclb = accessory prominences of caudolateral border; Ccac = central crest apical cavity; Ccclb = crenate crest of caudo-lateral border; Cmp = caudo-marginal projection; Cslp = conical spines of lateral process; Dlcmp = distal lobe of caudo-marginal projection; Map = marginal plate; Mas = marginal suture; Mep = mesial process; Sfac = setae field of apical cavity; Spch = spermatic channel." figureDoi="http://doi.org/10.5281/zenodo.13934119" httpUri="https://zenodo.org/record/13934119/files/figure.png" pageId="7" pageNumber="178">Fig. 3E</figureCitation>
). Setae field with short setae and conical granules, narrowly disseminated around opening of spermatic channel; spermatic channel in caudomesial position.
</paragraph>
</subSubSection>
<subSubSection id="558D6508FFAAFFC7C8F198ABFB3A5BA6" box="[199,1379,1742,1768]" pageId="7" pageNumber="178" type="type_taxon">
<paragraph id="1D283683FFAAFFC7C8F198ABFB3A5BA6" blockId="7.[151,1437,374,2021]" box="[199,1379,1742,1768]" pageId="7" pageNumber="178">
<emphasis id="2FE3EA91FFAAFFC7C8F198ABFF3B5BA6" bold="true" box="[199,354,1742,1768]" pageId="7" pageNumber="178">
<typeStatus id="C22C8821FFAAFFC7C8F198ABFF5B5BA6" box="[199,258,1742,1768]" pageId="7" pageNumber="178">Type</typeStatus>
species.
</emphasis>
<taxonomicName id="DA974D00FFAAFFC7C95F98ABFDDA5BA6" ID-CoL="6G9DX" authority="Rodriguez &amp; Smalley" authorityName="Rodriguez &amp; Smalley" box="[361,899,1742,1768]" class="Malacostraca" family="Pseudothelphusidae" genus="Epithelphusa" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="178" phylum="Arthropoda" rank="species" species="mixtepensis">
<emphasis id="2FE3EA91FFAAFFC7C95F98ABFCDE5BA6" box="[361,647,1742,1768]" italics="true" pageId="7" pageNumber="178">Epithelphusa mixtepensis</emphasis>
Rodríguez &amp; Smalley
</taxonomicName>
, in
<bibRefCitation id="79064B72FFAAFFC7CB9D98ABFA175BA6" author="Smalley, A. E." box="[939,1102,1742,1768]" pageId="7" pageNumber="178" pagination="96 - 106" refId="ref16153" refString="Smalley, A. E. (1970) A new genus of freshwater crabs from Guatemala, with a key to the Middle American genera (Crustacea, Decapoda, Pseudothelphusidae). American Midland Naturalist, 83 (1), 96 - 106. https: // doi. org / 10.2307 / 2424009" type="journal article" year="1970">Smalley, 1970</bibRefCitation>
, by original designation.
</paragraph>
</subSubSection>
<subSubSection id="558D6508FFAAFFC7C8F19897FA2F5A42" box="[199,1142,1778,1804]" pageId="7" pageNumber="178" type="taxon_list">
<paragraph id="1D283683FFAAFFC7C8F19897FA2F5A42" blockId="7.[151,1437,374,2021]" box="[199,1142,1778,1804]" pageId="7" pageNumber="178">
<emphasis id="2FE3EA91FFAAFFC7C8F19897FFCA5A42" bold="true" box="[199,403,1778,1804]" pageId="7" pageNumber="178">Species included.</emphasis>
<taxonomicName id="DA974D00FFAAFFC7C9AC9897FCC05A42" ID-CoL="6DZ2K" box="[410,665,1778,1804]" class="Malacostraca" family="Pseudothelphusidae" genus="Ehecatusa" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="178" phylum="Arthropoda" rank="species" species="mixtepensis">
<emphasis id="2FE3EA91FFAAFFC7C9AC9897FCC05A42" box="[410,665,1778,1804]" italics="true" pageId="7" pageNumber="178">Ehecatusa mixtepensis</emphasis>
</taxonomicName>
(Rodríguez &amp; Smalley, in
<bibRefCitation id="79064B72FFAAFFC7CBF09897FA335A42" author="Smalley, A. E." box="[966,1130,1778,1804]" pageId="7" pageNumber="178" pagination="96 - 106" refId="ref16153" refString="Smalley, A. E. (1970) A new genus of freshwater crabs from Guatemala, with a key to the Middle American genera (Crustacea, Decapoda, Pseudothelphusidae). American Midland Naturalist, 83 (1), 96 - 106. https: // doi. org / 10.2307 / 2424009" type="journal article" year="1970">Smalley, 1970</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="558D6508FFAAFFC7C8F19973FF975A36" pageId="7" pageNumber="178" type="distribution">
<paragraph id="1D283683FFAAFFC7C8F19973FF975A36" blockId="7.[151,1437,374,2021]" pageId="7" pageNumber="178">
<emphasis id="2FE3EA91FFAAFFC7C8F19973FF385A7E" bold="true" box="[199,353,1814,1840]" pageId="7" pageNumber="178">Distribution.</emphasis>
This monotypic genus is known only from the
<typeStatus id="C22C8821FFAAFFC7CBB09972FDEF5A7F" box="[902,950,1815,1841]" pageId="7" pageNumber="178">type</typeStatus>
locality of
<taxonomicName id="DA974D00FFAAFFC7CC0B9973FAB65A7E" box="[1085,1263,1814,1840]" class="Malacostraca" family="Pseudothelphusidae" genus="Ehecatusa" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="178" phylum="Arthropoda" rank="species" species="mixtepensis">
<emphasis id="2FE3EA91FFAAFFC7CC0B9973FAB65A7E" box="[1085,1263,1814,1840]" italics="true" pageId="7" pageNumber="178">Eh. mixtepensis</emphasis>
</taxonomicName>
at
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N of San Gabriel Mixtepec (approximately
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,
<geoCoordinate id="78A35044FFAAFFC7CB3B995FFD9B5A1B" box="[781,962,1850,1877]" degrees="97" direction="west" minutes="05" orientation="longitude" pageId="7" pageNumber="178" precision="1" seconds="21.61" value="-97.08934">97°05’21.61”W</geoCoordinate>
;
<quantity id="DA6F9B66FFAAFFC7CBE6995FFA435A1B" box="[976,1050,1850,1877]" metricMagnitude="2" metricUnit="m" metricValue="8.58" pageId="7" pageNumber="178" unit="m" value="858.0">858 m</quantity>
asl), municipality of San Gabriel Mixtepec,
<collectingRegion id="DF53F861FFAAFFC7C939993BFF3F5A36" box="[271,358,1886,1912]" country="Mexico" name="Oaxaca" pageId="7" pageNumber="178">Oaxaca</collectingRegion>
,
<collectingCountry id="65807613FFAAFFC7C947993BFF935A36" box="[369,458,1886,1912]" name="Mexico" pageId="7" pageNumber="178">Mexico</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="558D6508FFAAFFC8C8F199E7FCC85C0F" lastPageId="8" lastPageNumber="179" pageId="7" pageNumber="178" type="discussion">
<paragraph id="1D283683FFAAFFC8C8F199E7FCC85C0F" blockId="7.[151,1437,374,2021]" lastBlockId="8.[151,1436,151,321]" lastPageId="8" lastPageNumber="179" pageId="7" pageNumber="178">
<emphasis id="2FE3EA91FFAAFFC7C8F199E7FF625AD2" bold="true" box="[199,315,1922,1948]" pageId="7" pageNumber="178">Remarks.</emphasis>
<taxonomicName id="DA974D00FFAAFFC7C97599E7FFE15AD2" authorityName="Ng &amp; Low" authorityYear="2010" box="[323,440,1922,1948]" class="Malacostraca" family="Pseudothelphusidae" genus="Ehecatusa" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="178" phylum="Arthropoda" rank="genus">
<emphasis id="2FE3EA91FFAAFFC7C97599E7FFE15AD2" box="[323,440,1922,1948]" italics="true" pageId="7" pageNumber="178">Ehecatusa</emphasis>
</taxonomicName>
, a replacement name for
<taxonomicName id="DA974D00FFAAFFC7CAEF99E7FA355AD2" authority="Rodriguez &amp; Smalley" authorityName="Rodriguez &amp; Smalley" authorityYear="1970" box="[729,1132,1922,1948]" class="Malacostraca" family="Pseudothelphusidae" genus="Epithelphusa" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="178" phylum="Arthropoda" rank="genus">
<emphasis id="2FE3EA91FFAAFFC7CAEF99E7FD345AD2" box="[729,877,1922,1948]" italics="true" pageId="7" pageNumber="178">Epithelphusa</emphasis>
Rodríguez &amp; Smalley
</taxonomicName>
, in
<bibRefCitation id="79064B72FFAAFFC7CCA399E7FB605AD2" author="Smalley, A. E." box="[1173,1337,1922,1948]" pageId="7" pageNumber="178" pagination="96 - 106" refId="ref16153" refString="Smalley, A. E. (1970) A new genus of freshwater crabs from Guatemala, with a key to the Middle American genera (Crustacea, Decapoda, Pseudothelphusidae). American Midland Naturalist, 83 (1), 96 - 106. https: // doi. org / 10.2307 / 2424009" type="journal article" year="1970">Smalley, 1970</bibRefCitation>
, belongs to a group of genera, each with one or two species, with a complex G1 morphology. Morphologically,
<taxonomicName id="DA974D00FFAAFFC7CD1E99C3FBC45A8E" authorityName="Ng &amp; Low" authorityYear="2010" box="[1320,1437,1958,1984]" class="Malacostraca" family="Pseudothelphusidae" genus="Ehecatusa" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="178" phylum="Arthropoda" rank="genus">
<emphasis id="2FE3EA91FFAAFFC7CD1E99C3FBC45A8E" box="[1320,1437,1958,1984]" italics="true" pageId="7" pageNumber="178">Ehecatusa</emphasis>
</taxonomicName>
belongs to the subfamily
<taxonomicName id="DA974D00FFAAFFC7C98B99AFFCC25AAA" authorityName="Ortmann" authorityYear="1893" box="[445,667,1994,2020]" class="Malacostraca" family="Pseudothelphusidae" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="178" phylum="Arthropoda" rank="subFamily" subFamily="Pseudothelphusinae">Pseudothelphusinae</taxonomicName>
because the G1 has a caudo-marginal projection that distally ends in a slender lobe, extended cephalad. It can be distinguished from the other genera of
<taxonomicName id="DA974D00FFA5FFC8CC589EF2FB155DFF" authorityName="Ortmann" authorityYear="1893" box="[1134,1356,151,177]" class="Malacostraca" family="Pseudothelphusidae" kingdom="Animalia" order="Decapoda" pageId="8" pageNumber="179" phylum="Arthropoda" rank="subFamily" subFamily="Pseudothelphusinae">Pseudothelphusinae</taxonomicName>
by the presence of the lateral process, which is formed by two curved spines, like vertical horns; and by the unique form of the mesial process, which is a large, ax-shaped plate, cephalad directed, and proximally elongated. Also, the genetic analysis of the genus
<taxonomicName id="DA974D00FFA5FFC8C9BF9F66FFA75C53" authorityName="Ng &amp; Low" authorityYear="2010" box="[393,510,259,285]" class="Malacostraca" family="Pseudothelphusidae" genus="Ehecatusa" kingdom="Animalia" order="Decapoda" pageId="8" pageNumber="179" phylum="Arthropoda" rank="genus">
<emphasis id="2FE3EA91FFA5FFC8C9BF9F66FFA75C53" box="[393,510,259,285]" italics="true" pageId="8" pageNumber="179">Ehecatusa</emphasis>
</taxonomicName>
shows that it is sister clade to all the genera of the former
<taxonomicName id="DA974D00FFA5FFC8CCBB9F66FB035C53" authorityName="Ortmann" authorityYear="1897" box="[1165,1370,259,285]" class="Insecta" family="Apidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Hymenoptera" pageId="8" pageNumber="191" phylum="Arthropoda" rank="tribe" tribe="Pseudothelphusini">Pseudothelphusini</taxonomicName>
tribe, after genus
<taxonomicName id="DA974D00FFA5FFC8C92C9F42FC765C0F" authority="Alvarez, 1987" authorityName="Alvarez" authorityYear="1987" box="[282,559,295,321]" class="Malacostraca" family="Pseudothelphusidae" genus="Smalleyus" kingdom="Animalia" order="Decapoda" pageId="8" pageNumber="179" phylum="Arthropoda" rank="genus">
<emphasis id="2FE3EA91FFA5FFC8C92C9F42FFD55C0F" box="[282,396,295,321]" italics="true" pageId="8" pageNumber="179">Smalleyus</emphasis>
Alvarez, 1987
</taxonomicName>
(
<figureCitation id="85AC2A06FFA5FFC8CA099F42FCD95C0F" box="[575,640,295,321]" captionStart="FIGURE 1" captionStartId="6.[152,255,1632,1656]" captionTargetBox="[157,1429,673,1598]" captionTargetId="figure-236@6.[151,1436,666,1606]" captionTargetPageId="6" captionText="FIGURE 1. Tree obtained from the concatenated analysis of H3, 16S and COI through Maximum Likelihood and Inference Bayesian. Each color represents the subfamilies recognized by Álvarez et al. (2020): red—Ptychophallinae; green— Potamocarcininae;yellow—Raddausinaeandpurple—Pseudothelphusinae.The lineagesof EhecatusaandXoconochcothelphusa genera were colored with blue.Values at nodes represent bootstrap values for the Maximum Likelihood analysis (above branches, scores 1–100) and posterior probabilities (below branches, scores 0-1)." figureDoi="http://doi.org/10.5281/zenodo.13934115" httpUri="https://zenodo.org/record/13934115/files/figure.png" pageId="8" pageNumber="179">Fig. 1</figureCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>
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