151 lines
18 KiB
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151 lines
18 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1008.58854" ID-GBIF-Dataset="b31dfe66-0bbe-4226-8aa7-941526c56be1" ID-PMC="PMC7790807" ID-Pensoft-Pub="1313-2970-1008-1" ID-Pensoft-UUID="285C40BD37805C919C7CFFB981C9CF79" ID-PubMed="33505185" ID-ZooBank="6BF494BEA31B42D788AF2AB04EEB4725" ModsDocID="1313-2970-1008-1" checkinTime="1609463513021" checkinUser="pensoft" docAuthor="Huang, Chao, Ahyong, Shane T. & Shih, Hsi-Te" docDate="2020" docId="DA3B111E120A53789C243B2930BD38BD" docLanguage="en" docName="ZooKeys 1008: 1-15" docOrigin="ZooKeys 1008" docPubDate="2020-12-31" docSource="http://dx.doi.org/10.3897/zookeys.1008.58854" docTitle="Phasmon Huang & Ahyong & Shih 2020, gen. nov." docType="treatment" docUuid="0BD28B59-9BE1-4679-AD9C-268006C41E77" docUuidSource="ZooBank" docVersion="4" id="285C40BD37805C919C7CFFB981C9CF79" lastPageNumber="1" masterDocId="285C40BD37805C919C7CFFB981C9CF79" masterDocTitle="The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene" masterLastPageNumber="15" masterPageNumber="1" pageNumber="1" updateTime="1668149664100" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Huang, Chao</mods:namePart>
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<mods:affiliation>Unaffiliated, Guangdong, China</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Ahyong, Shane T.</mods:namePart>
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<mods:affiliation>Australian Museum, 1 William St, Sydney NSW 2010, Australia & School of Biological, Earth and Environmental Sciences, University of New South Wales, Kensington, NSW 2052, Australia</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Shih, Hsi-Te</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-1317-8783</mods:nameIdentifier>
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<mods:affiliation>Department of Life Science and Research Center for Global Change Biology, National Chung Hsing University, Taichung 402, Taiwan</mods:affiliation>
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<mods:nameIdentifier type="email">htshih@dragon.nchu.edu.tw</mods:nameIdentifier>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2020</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2020-12-31</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>1008</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>15</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.1008.58854</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1008.58854</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-1008-1</mods:identifier>
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<mods:identifier type="ZooBank">6BF494BEA31B42D788AF2AB04EEB4725</mods:identifier>
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<mods:identifier type="Pensoft-UUID">285C40BD37805C919C7CFFB981C9CF79</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="176352595" LSID="urn:lsid:zoobank.org:act:0BD28B59-9BE1-4679-AD9C-268006C41E77" httpUri="http://treatment.plazi.org/id/DA3B111E120A53789C243B2930BD38BD" lastPageNumber="1" pageId="0" pageNumber="1">
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<subSubSection pageId="0" pageNumber="1" type="nomenclature">
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<paragraph pageId="0" pageNumber="1">
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<taxonomicName LSID="http://zoobank.org/0BD28B59-9BE1-4679-AD9C-268006C41E77" authority="Huang & Ahyong & Shih, 2020" authorityName="Huang & Ahyong & Shih" authorityYear="2020" class="Malacostraca" family="Potamidae" genus="Phasmon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Phasmon" order="Decapoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="genus" status="gen. nov.">Phasmon</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="1">gen. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A) female paratype (22.1 x 13.7 mm), AM P. 105524 (B). Dorsal habitus." figureDoi="10.3897/zookeys.1008.58854.figure1" httpUri="https://binary.pensoft.net/fig/492915" pageId="0" pageNumber="1">Figs 1</figureCitation>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A-D) female paratype (22.1 x 13.7 mm), AM P. 105524 (E, F). Cephalothorax, anterior view (A) anterior thoracic sternum (B) anterior thoracic sternum and pleon, ventral view (C) sterno-pleonal cavity with G 1 in situ, ventral view (D) pleon, ventral view (E) vulvae, ventral view (F)." figureDoi="10.3897/zookeys.1008.58854.figure2" httpUri="https://binary.pensoft.net/fig/492916" pageId="0" pageNumber="1">, 2</figureCitation>
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982. Left maxilliped 3 (A) left G 2, pleonal view (B) left G 1, pleonal view (C) major cheliped (D) minor cheliped (E) colour in life (F). Scale bars: 1.0 mm." figureDoi="10.3897/zookeys.1008.58854.figure3" httpUri="https://binary.pensoft.net/fig/492917" pageId="0" pageNumber="1">, 3</figureCitation>
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Phasmon typhlops gen. nov. et sp. nov., gonopods: left G 1, abdominal view (A) left G 1, sternal view (B) left G 2, mesial view (C) left G 2, pleonal view (D). Scale bar: 0.5 mm." figureDoi="10.3897/zookeys.1008.58854.figure4" httpUri="https://binary.pensoft.net/fig/492918" pageId="0" pageNumber="1">, 4</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="type species">
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<paragraph pageId="0" pageNumber="1">Type species.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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<taxonomicName authorityName="Huang & Ahyong & Shih" authorityYear="2020" class="Malacostraca" family="Potamidae" genus="Phasmon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Phasmon typhlops" order="Decapoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="typhlops">
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<emphasis italics="true" pageId="0" pageNumber="1">Phasmon typhlops</emphasis>
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</taxonomicName>
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, by present designation.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="diagnosis">
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<paragraph pageId="0" pageNumber="1">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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Small sized (carapace width less than 30 mm). Carapace 1.6
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<normalizedToken originalValue="×">x</normalizedToken>
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wider than long; fronto-orbital width about twice width of posterior margin; dorsal surface weakly convex (Figs
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A) female paratype (22.1 x 13.7 mm), AM P. 105524 (B). Dorsal habitus." figureDoi="10.3897/zookeys.1008.58854.figure1" httpUri="https://binary.pensoft.net/fig/492915" pageId="0" pageNumber="1">1</figureCitation>
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,
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A-D) female paratype (22.1 x 13.7 mm), AM P. 105524 (E, F). Cephalothorax, anterior view (A) anterior thoracic sternum (B) anterior thoracic sternum and pleon, ventral view (C) sterno-pleonal cavity with G 1 in situ, ventral view (D) pleon, ventral view (E) vulvae, ventral view (F)." figureDoi="10.3897/zookeys.1008.58854.figure2" httpUri="https://binary.pensoft.net/fig/492916" pageId="0" pageNumber="1">2A</figureCitation>
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); frontal margin weakly sinuous, continuous with supraorbital margin, forming almost straight anterior margin of carapace in dorsal view (Fig.
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A) female paratype (22.1 x 13.7 mm), AM P. 105524 (B). Dorsal habitus." figureDoi="10.3897/zookeys.1008.58854.figure1" httpUri="https://binary.pensoft.net/fig/492915" pageId="0" pageNumber="1">1</figureCitation>
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); postorbital and epigastric cristae almost indiscernible (Figs
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A) female paratype (22.1 x 13.7 mm), AM P. 105524 (B). Dorsal habitus." figureDoi="10.3897/zookeys.1008.58854.figure1" httpUri="https://binary.pensoft.net/fig/492915" pageId="0" pageNumber="1">1</figureCitation>
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,
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A-D) female paratype (22.1 x 13.7 mm), AM P. 105524 (E, F). Cephalothorax, anterior view (A) anterior thoracic sternum (B) anterior thoracic sternum and pleon, ventral view (C) sterno-pleonal cavity with G 1 in situ, ventral view (D) pleon, ventral view (E) vulvae, ventral view (F)." figureDoi="10.3897/zookeys.1008.58854.figure2" httpUri="https://binary.pensoft.net/fig/492916" pageId="0" pageNumber="1">2A</figureCitation>
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); orbit shallow, eyes vestigial, almost immovable, length about half orbital width; cornea reduced, unpigmented, facets absent; external orbital angle very wide, confluent with anterolateral margin (Figs
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A) female paratype (22.1 x 13.7 mm), AM P. 105524 (B). Dorsal habitus." figureDoi="10.3897/zookeys.1008.58854.figure1" httpUri="https://binary.pensoft.net/fig/492915" pageId="0" pageNumber="1">1</figureCitation>
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,
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A-D) female paratype (22.1 x 13.7 mm), AM P. 105524 (E, F). Cephalothorax, anterior view (A) anterior thoracic sternum (B) anterior thoracic sternum and pleon, ventral view (C) sterno-pleonal cavity with G 1 in situ, ventral view (D) pleon, ventral view (E) vulvae, ventral view (F)." figureDoi="10.3897/zookeys.1008.58854.figure2" httpUri="https://binary.pensoft.net/fig/492916" pageId="0" pageNumber="1">2A</figureCitation>
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). Epibranchial tooth inconspicuous. Median lobe of epistome broadly triangular (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A-D) female paratype (22.1 x 13.7 mm), AM P. 105524 (E, F). Cephalothorax, anterior view (A) anterior thoracic sternum (B) anterior thoracic sternum and pleon, ventral view (C) sterno-pleonal cavity with G 1 in situ, ventral view (D) pleon, ventral view (E) vulvae, ventral view (F)." figureDoi="10.3897/zookeys.1008.58854.figure2" httpUri="https://binary.pensoft.net/fig/492916" pageId="0" pageNumber="1">2A</figureCitation>
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). Maxilliped 3 ischium length less than twice width; exopod reaching beyond distal edge of ischium, flagellum well-developed (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982. Left maxilliped 3 (A) left G 2, pleonal view (B) left G 1, pleonal view (C) major cheliped (D) minor cheliped (E) colour in life (F). Scale bars: 1.0 mm." figureDoi="10.3897/zookeys.1008.58854.figure3" httpUri="https://binary.pensoft.net/fig/492917" pageId="0" pageNumber="1">3A</figureCitation>
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). Cheliped fingers without gape when closed (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982. Left maxilliped 3 (A) left G 2, pleonal view (B) left G 1, pleonal view (C) major cheliped (D) minor cheliped (E) colour in life (F). Scale bars: 1.0 mm." figureDoi="10.3897/zookeys.1008.58854.figure3" httpUri="https://binary.pensoft.net/fig/492917" pageId="0" pageNumber="1">3D, E</figureCitation>
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). Male anterior thoracic sternum very wide, around 2.3 times as wide as long (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A-D) female paratype (22.1 x 13.7 mm), AM P. 105524 (E, F). Cephalothorax, anterior view (A) anterior thoracic sternum (B) anterior thoracic sternum and pleon, ventral view (C) sterno-pleonal cavity with G 1 in situ, ventral view (D) pleon, ventral view (E) vulvae, ventral view (F)." figureDoi="10.3897/zookeys.1008.58854.figure2" httpUri="https://binary.pensoft.net/fig/492916" pageId="0" pageNumber="1">2B</figureCitation>
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). Male pleon triangular (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A-D) female paratype (22.1 x 13.7 mm), AM P. 105524 (E, F). Cephalothorax, anterior view (A) anterior thoracic sternum (B) anterior thoracic sternum and pleon, ventral view (C) sterno-pleonal cavity with G 1 in situ, ventral view (D) pleon, ventral view (E) vulvae, ventral view (F)." figureDoi="10.3897/zookeys.1008.58854.figure2" httpUri="https://binary.pensoft.net/fig/492916" pageId="0" pageNumber="1">2C</figureCitation>
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). G1 tapering anteriorly, tip narrow but blunt (Figs
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982. Left maxilliped 3 (A) left G 2, pleonal view (B) left G 1, pleonal view (C) major cheliped (D) minor cheliped (E) colour in life (F). Scale bars: 1.0 mm." figureDoi="10.3897/zookeys.1008.58854.figure3" httpUri="https://binary.pensoft.net/fig/492917" pageId="0" pageNumber="1">3C</figureCitation>
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,
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Phasmon typhlops gen. nov. et sp. nov., gonopods: left G 1, abdominal view (A) left G 1, sternal view (B) left G 2, mesial view (C) left G 2, pleonal view (D). Scale bar: 0.5 mm." figureDoi="10.3897/zookeys.1008.58854.figure4" httpUri="https://binary.pensoft.net/fig/492918" pageId="0" pageNumber="1">4A, B</figureCitation>
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). G2 distal segment tip pointed (Figs
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982. Left maxilliped 3 (A) left G 2, pleonal view (B) left G 1, pleonal view (C) major cheliped (D) minor cheliped (E) colour in life (F). Scale bars: 1.0 mm." figureDoi="10.3897/zookeys.1008.58854.figure3" httpUri="https://binary.pensoft.net/fig/492917" pageId="0" pageNumber="1">3B</figureCitation>
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,
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Phasmon typhlops gen. nov. et sp. nov., gonopods: left G 1, abdominal view (A) left G 1, sternal view (B) left G 2, mesial view (C) left G 2, pleonal view (D). Scale bar: 0.5 mm." figureDoi="10.3897/zookeys.1008.58854.figure4" httpUri="https://binary.pensoft.net/fig/492918" pageId="0" pageNumber="1">4C, D</figureCitation>
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). Female vulvae on sternite 6, reaching sutures of sternites 5/6 anteriorly, very widely spaced from one another (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Phasmon typhlops gen. nov. et sp. nov., male holotype (14.4 x 9.0 mm), SYSBM 001982 (A-D) female paratype (22.1 x 13.7 mm), AM P. 105524 (E, F). Cephalothorax, anterior view (A) anterior thoracic sternum (B) anterior thoracic sternum and pleon, ventral view (C) sterno-pleonal cavity with G 1 in situ, ventral view (D) pleon, ventral view (E) vulvae, ventral view (F)." figureDoi="10.3897/zookeys.1008.58854.figure2" httpUri="https://binary.pensoft.net/fig/492916" pageId="0" pageNumber="1">2F</figureCitation>
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).
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</paragraph>
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<caption doi="10.3897/zookeys.1008.58854.figure1" httpUri="https://binary.pensoft.net/fig/492915" pageId="0" pageNumber="1" start="Figure 1" startId="F1">
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<paragraph pageId="0" pageNumber="1">
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<emphasis bold="true" pageId="0" pageNumber="1">Figure 1.</emphasis>
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<taxonomicName authorityName="Huang & Ahyong & Shih" authorityYear="2020" class="Malacostraca" family="Potamidae" genus="Phasmon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Phasmon typhlops" order="Decapoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="typhlops">
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<emphasis italics="true" pageId="0" pageNumber="1">Phasmon typhlops</emphasis>
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</taxonomicName>
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gen. nov. et sp. nov., male holotype (14.4
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<normalizedToken originalValue="×">x</normalizedToken>
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9.0 mm), SYSBM 001982 (
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<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
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) female paratype (22.1
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<normalizedToken originalValue="×">x</normalizedToken>
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13.7 mm), AM P.105524 (
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<emphasis bold="true" pageId="0" pageNumber="1">B</emphasis>
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). Dorsal habitus.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="1" type="etymology">
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<paragraph pageId="0" pageNumber="1">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="1">
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The genus name is an arbitrary combination of the Latin word
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<normalizedToken originalValue="“phasma”">"phasma"</normalizedToken>
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, meaning ghost, which refers to the type
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<normalizedToken originalValue="species’">species'</normalizedToken>
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pale appearance and dark habitat, and the genus name
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<taxonomicName authorityName="Savigny" authorityYear="1816" class="Crustacea" family="Potamidae" genus="Potamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamon" order="Decapoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="1">Potamon</emphasis>
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</taxonomicName>
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, which is the type genus of the family. Gender neuter.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |