292 lines
33 KiB
XML
292 lines
33 KiB
XML
<document id="95048B8B3E0481EB659565D2EB121124" ID-CLB-Dataset="35075" ID-DOI="http://dx.doi.org/10.3897/zse.93.12125" ID-GBIF-Dataset="e6ebc383-e9f0-4bdd-8a90-580314a2d81a" ID-Pensoft-Pub="1860-0743-2-189" ID-ZooBank="95D58718953F44B2AA39C5D1EF4B36BC" ModsDocAuthor="" ModsDocDate="2017" ModsDocID="1860-0743-2-189" ModsDocOrigin="Zoosystematics and Evolution 93 (2)" ModsDocTitle="Two new species of Jesogammarus from Japan (Crustacea, Amphipoda, Anisogammaridae), with comments on the validity of the subgenera Jesogammarus and Annanogammarus" checkinTime="1489820724786" checkinUser="pensoft" docAuthor="Tomikawa, Ko, Nakano, Takafumi & Hanzawa, Naoto" docDate="2017" docId="A97796B230BF8FD2ABD9660B32F4F88D" docLanguage="en" docName="ZoosystEvol 93(2): 189-210" docOrigin="Zoosystematics and Evolution 93 (2)" docSource="http://dx.doi.org/10.3897/zse.93.12125" docTitle="Jesogammarus (Jesogammarus) bousfieldi Tomikawa, Nakano & Hanzawa, 2017, sp. n." docType="treatment" docUuid="EC1F1C3D-259C-4D7A-B88D-51AA229605A2" docUuidSource="ZooBank" docVersion="7" lastPageNumber="193" masterDocId="3F586311E00B9425305FFF8B7062FFFB" masterDocTitle="Two new species of Jesogammarus from Japan (Crustacea, Amphipoda, Anisogammaridae), with comments on the validity of the subgenera Jesogammarus and Annanogammarus" masterLastPageNumber="210" masterPageNumber="189" pageNumber="191" updateTime="1701377760105" updateUser="ExternalLinkService">
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<mods:title id="179C35A9FA1C8CC873CF1D998ADB79DA">Two new species of Jesogammarus from Japan (Crustacea, Amphipoda, Anisogammaridae), with comments on the validity of the subgenera Jesogammarus and Annanogammarus</mods:title>
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<mods:name id="7E2ECAED6E7CF7B0C5948EA334B629F6" type="personal">
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<mods:namePart id="B4C7EF64FD4EF30420960744DEA447D9">Tomikawa, Ko</mods:namePart>
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<mods:roleTerm id="CED7CF2C605EBFE1430DA083EF44403D">Author</mods:roleTerm>
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<mods:namePart id="F61C7312C53B0E12C8956FF76B446057">Nakano, Takafumi</mods:namePart>
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<mods:roleTerm id="22C1B747F64A4416C570F0A9F182D03B">Author</mods:roleTerm>
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<mods:namePart id="8B178ED8208ABA252BFB4DD3A8F81F78">Hanzawa, Naoto</mods:namePart>
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<mods:title id="A36DD0F7F58664A1966D8E3B66B8661F">Zoosystematics and Evolution</mods:title>
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<mods:part id="3A8D3E575A7737CF6996164A43636001">
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<mods:date id="E7A38573B56A1F0348E59611EBA7092A">2017</mods:date>
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<mods:number id="71CDB3D5CAF52CEB8471BFF6C6AAB5DD">93</mods:number>
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<mods:classification id="D618891F9CCE0A831D2CE54D639CE8FE">journal article</mods:classification>
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<mods:identifier id="0AA72FF588BE4FD6D25889FEC2EA1482" type="DOI">http://dx.doi.org/10.3897/zse.93.12125</mods:identifier>
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<mods:identifier id="3682B95CC4324EAEC0F20F4662FC3EE9" type="Pensoft-Pub">1860-0743-2-189</mods:identifier>
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<treatment id="A97796B230BF8FD2ABD9660B32F4F88D" ID-GBIF-Taxon="127875083" LSID="urn:lsid:zoobank.org:act:EC1F1C3D-259C-4D7A-B88D-51AA229605A2" httpUri="http://treatment.plazi.org/id/A97796B230BF8FD2ABD9660B32F4F88D" lastPageId="4" lastPageNumber="193" pageId="2" pageNumber="191">
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<subSubSection id="DFE7C0D677961598EDDA79FD68652D2E" pageId="2" pageNumber="191" type="nomenclature">
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<paragraph id="B713965E02B1F3D6B187D575B4377F4B" pageId="2" pageNumber="191">
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<taxonomicName id="D936D57CB21309D68FCBF3893314ECBF" ID-CoL="3QP9N" LSID="http://zoobank.org/EC1F1C3D-259C-4D7A-B88D-51AA229605A2" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus (Jesogammarus) bousfieldi" order="Amphipoda" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="bousfieldi" subGenus="Jesogammarus">Jesogammarus (Jesogammarus) bousfieldi</taxonomicName>
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<taxonomicNameLabel id="CD3DFA0CFCA4FC74DD7F53CEF7C8669E" pageId="2" pageNumber="191">sp. n.</taxonomicNameLabel>
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Figs 2, 3, 4, 5, 6, 7, 8
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</paragraph>
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</subSubSection>
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<subSubSection id="B56AA0372BF414AEB8D67604B8E1AF66" pageId="2" pageNumber="191" type="type material">
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<paragraph id="7CE59C1C6D9AE98E0461AC0A458D0FAD" pageId="2" pageNumber="191">Type materials.</paragraph>
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<paragraph id="F782C7C920E201C4E2F322E58D03154B" pageId="2" pageNumber="191">
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Holotype: Male (9.8 mm), NSMT-Cr 25470, Aburato (
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<geoCoordinate id="EBB58CB588C90C033F7816C7B41631CF" direction="north" orientation="latitude" precision="1" value="38.756638">38°45′23.9″N</geoCoordinate>
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,
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<geoCoordinate id="681D213748239954370F6D0EAD07A012" direction="east" orientation="longitude" precision="1" value="139.72075">139°43′14.7″E</geoCoordinate>
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), Tsuruoka, Yamagata Prefecture, Japan, 26 November 2013, collected by K. Tomikawa. Paratypes: 1 ovigerous female (6.6 mm), NSMT-Cr 25471, 1 male (8.2 mm), KUZ Z1799, 1 male (8.4 mm), KUZ Z1800, data same as for holotype; 1 female (8.9 mm), KUZ Z1797, 1 male (9.0 mm), KUZ Z1798, Gassan (
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<geoCoordinate id="3ABF3993AFBDA81A8079AEC9181C0A42" direction="north" orientation="latitude" precision="1" value="38.564777">38°33′53.2″N</geoCoordinate>
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,
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<geoCoordinate id="05247DCD70D2AA335B2DB5A578B55104" direction="east" orientation="longitude" precision="1" value="139.94008">139°56′24.3″E</geoCoordinate>
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), Tsuruoka, Yamagata Prefecture, Japan, 26 November 2013, collected by K. Tomikawa; 1 Male (10.4 mm), NSMT-Cr 25472, 1 ovigerous female (9.2 mm), NSMT-Cr 25473, 1 ovigerous female (7.8 mm), KUZ Z1801, 1 male (10.3 mm), KUZ Z1802, Otaki, Mamurogawa, Yamagata Prefecture, Japan, 15 April 2001, collected by K. Tomikawa.
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</paragraph>
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</subSubSection>
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<subSubSection id="CE2B1758ED90D69D9D229AE51D6939D9" pageId="2" pageNumber="191" type="type locality">
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<paragraph id="FD4D018E4D5E8824F2EA5D72F2D2CCBF" pageId="2" pageNumber="191">Type locality.</paragraph>
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<paragraph id="629AA9BAF1C5CFE7FA7C4C888EBD0AF7" pageId="2" pageNumber="191">Japan, Yamagata Prefecture: Tsuruoka, Aburato.</paragraph>
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</subSubSection>
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<subSubSection id="9BA398DE965224A512960B61823B1E8F" lastPageId="4" lastPageNumber="193" pageId="2" pageNumber="191" type="description">
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<paragraph id="51C29B61CBDE9F6C0D219F80CCBC0F8A" pageId="2" pageNumber="191">Description.</paragraph>
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<paragraph id="8A7873DF85588F7BB5EB45B363502B10" pageId="2" pageNumber="191">
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Male [NSMT-Cr 25470, 9.8 mm]. Head (Fig. 2) with short rostrum; ventral margin of lateral cephalic lobe weakly concave; antennal sinus rounded; eyes oval, major axis 0.2
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<normalizedToken id="06A21470991BA163B2EE1FAB95106D11" originalValue="×">x</normalizedToken>
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height of head. Dorsal surfaces of pereonites smooth (Fig. 2). Dorsal margins of pleonites 1-3 (Fig. 3
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<normalizedToken id="30F0EF63CF0D5D56A9D43D7F3E1C5F46" originalValue="A–C">A-C</normalizedToken>
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) with 4, 4, and 9 setae, respectively. Posterior margin of epimeral plate 1 rounded with seta, posteroventral corner with seta, anteroventral corner with 8 setae (Fig. 3D); posterior margin of plate 2 almost straight with 4 setae, posteroventral corner quadrate with seta, anteroventral corner with 4 setae, ventral submargin with 2 robust setae and 2 small setae (Fig. 3E); posterior margin of plate 3 almost straight with 5 setae, posteroventral corner quadrate with seta, anteroventral corner with 2 setae, ventral submargin with 2 robust setae (Fig. 3F). Urosomites 1-3 (Fig. 3
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<normalizedToken id="9592F990AEFF32384859C8E60763AC95" originalValue="G–I">G-I</normalizedToken>
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) with 8, 6, and 2 robust setae associated with slender setae on dorsal margins.
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</paragraph>
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<caption id="0ED1269DA7D40D08CCF6D0395FBDE20D" pageId="2" pageNumber="191">
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<paragraph id="B2CE4EA6F6DA0BED5D391F13504DC028" pageId="2" pageNumber="191">
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Figure 2.
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<taxonomicName id="85CF2D87F5FAAF3598F2837061675C28" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
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sp. n., holotype, male (9.8 mm), NSMT-Cr 25470. Habitus, lateral view.
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</paragraph>
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</caption>
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<paragraph id="266F3CF590A6ED6C4539835DD665110C" pageId="2" pageNumber="191">
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Antenna 1 (Fig. 3J): length 0.5
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<normalizedToken id="0981E1F5DB1AEC3996FCD2E14034FF89" originalValue="×">x</normalizedToken>
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body length; peduncular articles 1-3 in length ratio of 1.0: 0.8: 0.5; posterodistal corner of peduncular article 1 without robust seta, posterior margin of peduncular article 1 with 2 clusters and 1 pair of setae and 1 single seta, posterior margin of peduncular article 2 with 5 clusters and 1 pairs of setae, posterior margin of peduncular article 3 with 2 clusters and 1 pair of setae; accessory flagellum 6-articulate; primary flagellum 26-articulate, each article with 1 aesthetasc.
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</paragraph>
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<paragraph id="7E3397D2269C230AFE2EDD878653A5FE" pageId="2" pageNumber="191">
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Antenna 2 (Fig. 3K): length 0.6
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<normalizedToken id="3071D465BBC33B97E65DBAED84B96DCB" originalValue="×">x</normalizedToken>
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antenna 1; posterior margin of peduncular article 4 with 5 clusters of setae, posterior margin of peduncular article 5 with 3 clusters and 1 pair of setae and 1 single seta; flagellum 13-articulate, calceoli present (Fig. 3L).
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</paragraph>
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<caption id="103280C9F4DF1919F9A0C71141A1DE28" pageId="2" pageNumber="191">
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<paragraph id="AFB75CF1753F186CCAAEAE59039896E2" pageId="2" pageNumber="191">
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Figure 3.
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<taxonomicName id="AECDA4039417CEE3C04CF6EC8E2BE63B" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
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sp. n., holotype, male (9.8 mm), NSMT-Cr 25470.
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<normalizedToken id="9CD7E191FEBEAA24F3CBC2C773BDB2AE" originalValue="A–C">A-C</normalizedToken>
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dorsal margins of pleonites 1-3, respectively, dorsal views;
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<normalizedToken id="12EAD74C33A36AE7AC12B1CF021F1D20" originalValue="D–F">D-F</normalizedToken>
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epimeral plates 1-3, respectively, lateral views;
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<normalizedToken id="CB980617305C764E0C8FA60B6B7E40C4" originalValue="G–I">G-I</normalizedToken>
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dorsal margins of urosomites 1-3, respectively, dorsal views; J peduncular articles 1-3, accessory flagellum, and flagellar articles 1-3 of antenna 1, medial view; K peduncular articles 1-5 and flagellar articles 1-3 of antenna 2, medial view; L calceolus of antenna 2, medial view; M upper lip, anterior view; N left mandible, medial view; O incisor and lacinia mobilis of left mandible, lateral view; P incisor and lacinia mobilis of right mandible, lateral view; Q lower lip, ventral view.
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</paragraph>
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</caption>
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<paragraph id="E1B1D46B179B9E187F35F37A3364B28A" pageId="2" pageNumber="191">
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Mouthparts. Upper lip (= labrum) (Fig. 3M) with rounded distal margin, bearing fine setae. Mandibles (Fig. 3
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<normalizedToken id="8C1C55FCBF7FDFFA595BD7DB21B5249A" originalValue="N–P">N-P</normalizedToken>
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) with left and right incisors 5- and 4-dentate, respectively, left lacinia mobilis 4-dentate, right one bifid, bearing many teeth; molar process triturative, with plumose seta; accessory setal rows of left and right mandibles with 7 and 6 blade-like setae, respectively; palp 3-articulate with length ratio of 1.0: 4.4: 4.0, palp article 1 bare, article 2 with 22 setae, article 3 with 2 clusters and 1 pair of A-setae, 1 pair of B-setae, and many C-, D-, and E-setae. Lower lip (= labium) (Fig. 3Q) with broad outer lobes, inner lobes indistinct. Maxilla 1 (Fig. 4A) with inner and outer plates and palp; medial margin and apical submargin of inner plate with 20 and 2 plumose setae, respectively; outer plate subrectangular, with 11 serrate teeth apically (Fig. 4B); palp 2-articulate, longer than outer plate, article 1 lacking marginal setae, article 2 with 7 robust setae and 1 slender seta on its apical margin and 3 slender setae on its submargin, outer margin without setae. Maxilla 2 (Fig. 4C) with oblique inner row of 19 plumose setae on inner plate; outer plate almost as long as inner plate. Maxilliped (Fig. 4D) with inner and outer plates and palp; inner plate with 3 and 2 robust setae on apical and inner margins, respectively; outer plate with plumose setae on apical margin and robust setae on inner margin; palp 4-articulate, article 2 with inner marginal and submarginal rows of setae, article 3 with facial setae, article 4 slightly curved inward, with slender nail.
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</paragraph>
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<caption id="42DE333146C0495C141E8E17E4426F03" pageId="2" pageNumber="191">
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<paragraph id="7DB1B5FFE6177DE45DE4C329CB37FA63" pageId="2" pageNumber="191">
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Figure 4.
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<taxonomicName id="FDB3C1161148E95EA682C5192BFACB41" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
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sp. n., holotype, male (9.8 mm), NSMT-Cr 25470. A maxilla 1, dorsal view; B outer plate of maxilla 1, dorsal view; C maxilla 2, dorsal view; D maxilliped, dorsal view; E gnathopod 1, lateral view; F palmar margin of propodus of gnathopod 1, lateral view; G gnathopod 2, lateral view; H palmar margin of propodus of gnathopod 2, lateral view; I pereopod 3, lateral view; J pereopod 4, lateral view.
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</paragraph>
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</caption>
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<paragraph id="417B57C0D8E07E93A0E408D0866AA632" pageId="2" pageNumber="191">
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Gnathopod 1 (= pereopod 1) (Fig. 4E): coxa (= article 1) with 13 setae on anterodistal to ventral margin; anterior and posterior margins of basis (= article 2) with long setae; carpus (= article 5) length 1.5
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<normalizedToken id="40BDFFE297E85E8991AA595B63ED81F1" originalValue="×">x</normalizedToken>
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width, anterior margin with 1 pair of setae; propodus (= article 6) length 1.4
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<normalizedToken id="C13BE23579E9EE9264B3393E5E43A25B" originalValue="×">x</normalizedToken>
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carpus and 1.4
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<normalizedToken id="5CAEE3BF8F9C2191ABBCF155B0A4899B" originalValue="×">x</normalizedToken>
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width, anterior margin with 1 pair and 1 cluster of setae, palmar margin oblique, weakly convex, with 15 peg-shaped robust setae (Fig. 4F); dactylus (= article 7) as long as palmar margin.
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</paragraph>
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<paragraph id="E154A0E83E098D5541896DF176DE27C0" pageId="2" pageNumber="191">
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Gnathopod 2 (= pereopod 2) (Fig. 4G): coxa with 6 marginal setae on ventral margin, posterodistal corner with 1 seta; anterior and posterior margins of basis with long setae; carpus length 1.5
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<normalizedToken id="575063638DD805D9DE40639ACB79A825" originalValue="×">x</normalizedToken>
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width, anterior margin with 1 pair of setae; propodus length 1.2
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<normalizedToken id="443E834B805D78E06E0AF39B42526CB2" originalValue="×">x</normalizedToken>
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carpus and 1.5
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<normalizedToken id="8E39E4C43141D05DAEDE00FD5E51A53B" originalValue="×">x</normalizedToken>
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width, respectively, anterior margin with 2 clusters of setae, palmar margin oblique, weakly convex, with 10 peg-shaped robust setae (Fig. 4H); dactylus as long as palmar margin.
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</paragraph>
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<paragraph id="40C042C2DB5287221C485A3AC3A2380D" pageId="2" pageNumber="191">Pereopod 3 (Fig. 4I): coxa with 7 marginal setae on ventral part, posteroproximal part with 2 setae; anterior and posterior margins of basis with long setae, anterodistal corner of basis with robust seta.</paragraph>
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<paragraph id="C8C714AA3773477041EC36910A3AC5BF" pageId="2" pageNumber="191">Pereopod 4 (Fig. 4J): coxa expanded with posterior concavity, bearing 2 setae on anterodistal corner and 6 setae on ventral margin; anterior and posterior margins of basis with long setae, anterodistal corner with robust seta.</paragraph>
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<paragraph id="EF7B6DDF8E925F1D0ADF89550CD16A39" pageId="2" pageNumber="191">Pereopod 5 (Fig. 5A): coxa bilobed, anterior lobe with apical seta, ventral margin of posterior lobe with 3 setae, posterodistal corner rounded with seta; posterior margin of basis weakly expanded, with 13 setae; anterior and posterior margins of merus to propodus with robust and slender setae.</paragraph>
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<caption id="64C1FBB5A168A1B1A649FAC567E6962E" pageId="2" pageNumber="191">
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<paragraph id="2E0AC86FDFB0C987F4B77A8047B84D9E" pageId="2" pageNumber="191">
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Figure 5.
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<taxonomicName id="7A24E3B546D4B3D4974217399677142E" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="2" pageNumber="191" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
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sp. n., holotype, male (9.8 mm), NSMT-Cr 25470 (
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<normalizedToken id="F86E45B4849E5B5A32A3542C69615051" originalValue="A–C">A-C</normalizedToken>
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and
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<normalizedToken id="2045B0BA61887C21C3104E256B29BFE5" originalValue="E–P">E-P</normalizedToken>
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) and paratype, female (6.6 mm), NSMT-Cr 25471 (D). A
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<normalizedToken id="492C30ED01465C0D61DCEC7250CB2E68" originalValue="coxa–ischium">coxa-ischium</normalizedToken>
|
||
of pereopod 5, lateral view; B
|
||
<normalizedToken id="FB6B3A49BDCD7A42F874F23CB85C2755" originalValue="coxa–ischium">coxa-ischium</normalizedToken>
|
||
of pereopod 6, lateral view; C
|
||
<normalizedToken id="3F0237B1B882964CA038C788D92F6420" originalValue="coxa–ischium">coxa-ischium</normalizedToken>
|
||
of pereopod 7, lateral view;
|
||
<normalizedToken id="7B7AEFA1F23FB796AC34DF9A41D2FE86" originalValue="D–I">D-I</normalizedToken>
|
||
coxal gills on gnathopod 2 and pereopods 3-7, lateral views; J pleopod 1, lateral view, distal parts of rami omitted; K bifid plumose seta (clothes-pin seta) on inner basal margin of inner ramus of pleopod 1, lateral view; L retinacula on peduncle of pleopod 1, lateral view; M uropod 1, dorsal view; N uropod 2, dorsal view; O uropod 3, dorsal view; P telson, dorsal view.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="B3529E4D64F09E670BD3D155A70CF477" pageId="2" pageNumber="191">Pereopod 6 (Fig. 5B): coxa bilobed, anterior lobe with anteroproximal setae, ventral margin of posterior lobe with 3 setae, posterodistal corner rounded with seta; posterior margin of basis weakly expanded with 12 setae, posterodistal corner with robust seta associated with small seta; anterior and posterior margins of merus to propodus with robust and slender setae.</paragraph>
|
||
<paragraph id="42C174DE7C99B34A588CEAB11E3ACFAE" pageId="2" pageNumber="191">Pereopod 7 (Fig. 5C): ventral margin of coxa weakly concave, bearing 2 setae on anterior part and 4 setae on posteroventral part; posterior margin of basis weakly expanded with 9 setae, posterodistal corner with robust seta associated with 2 small setae; anterior and posterior margins of merus to propodus with robust and slender setae.</paragraph>
|
||
<paragraph id="5E9292C80857A37904024CDF1D0E1123" pageId="2" pageNumber="191">
|
||
Coxal gills on gnathopod 2 and pereopods 3-5 (Fig. 5
|
||
<normalizedToken id="986D75A859BEE5F6C41EB37D14FD0088" originalValue="D–G">D-G</normalizedToken>
|
||
) with 2 accessory lobes, posterior lobes longer than anterior ones, gills on pereopods 6 and 7 (Fig. 5H, I) each with 1 accessory lobe.
|
||
</paragraph>
|
||
<paragraph id="BBE5F3FDD919C21C9BEFC7F4C47271E9" pageId="2" pageNumber="191">Pleopods 1-3 (Fig. 5J) each with paired retinacula (Fig. 5L) on inner margin of peduncle, and bifid plumose setae (= clothes-pin setae) (Fig. 5K) on inner basal margin of inner ramus.</paragraph>
|
||
<paragraph id="9818771ACFC59A768B2AC0BAA014403A" lastPageId="4" lastPageNumber="193" pageId="3" pageNumber="192">
|
||
<pageBreakToken id="90AE7703E2050F1090F8FD7A9EBD72EC" pageId="3" pageNumber="192" start="start">Uropods</pageBreakToken>
|
||
. Uropod 1 (Fig. 5M): peduncle with robust seta on basofacial part, inner and outer margins each with 2 robust setae, inner and outer distal corners with 1 and 2 robust setae, respectively; inner ramus length 0.7
|
||
<normalizedToken id="6D762E42B1DF46A70B347F4CF777F11B" originalValue="×">x</normalizedToken>
|
||
peduncle, inner margin with 2 robust setae and outer margin with robust seta; outer ramus length 0.8
|
||
<normalizedToken id="C0DEDC18C8334C3E25C9AAA0A8FCC9CF" originalValue="×">x</normalizedToken>
|
||
inner ramus, inner and outer margins each with robust seta. Uropod 2 (Fig. 5N): peduncle with 2 robust setae on inner and outer margins, respectively, inner and outer distal corners each with robust seta; inner ramus length 0.8
|
||
<normalizedToken id="64E440347D7BDEB5276C1B4EA630D8DA" originalValue="×">x</normalizedToken>
|
||
peduncle, its inner and outer margins each with robust seta; outer ramus length 0.9
|
||
<normalizedToken id="2C49ED3280B4A7571F22C6E59E715E84" originalValue="×">x</normalizedToken>
|
||
inner ramus, marginally bare. Uropod 3 (Fig. 5O): peduncle length 0.3
|
||
<normalizedToken id="B6C8EB377E7013DCDE7A7DE4D70787CC" originalValue="×">x</normalizedToken>
|
||
outer ramus; inner ramus length 0.2
|
||
<normalizedToken id="B21C860C847AF5D46176808701DD4DA0" originalValue="×">x</normalizedToken>
|
||
outer ramus, with 2 slender setae and robust seta on inner margin, and apical seta; outer ramus 2-articulate, inner and outer margins
|
||
<pageBreakToken id="843A3F22345CD9C4DDD47DF2045FD658" pageId="4" pageNumber="193" start="start">of</pageBreakToken>
|
||
article 1 each with 3 clusters of setae, some of which robust, inner margin with plumose seta, article 2 length 0.1
|
||
<normalizedToken id="A3030CD4E9D009EF3AF115AC5CE9D47B" originalValue="×">x</normalizedToken>
|
||
article 1, with simple setae apically.
|
||
</paragraph>
|
||
<paragraph id="C5514B4622836DB53EC46F624EFA739D" pageId="4" pageNumber="193">
|
||
Telson (Fig. 5P) length 0.8 times
|
||
<normalizedToken id="3F4E346C53CF282F2E90F4E9D36C2D65" originalValue="×">x</normalizedToken>
|
||
width, cleft for 79% of length; each lobe with 2 robust setae and slender setae.
|
||
</paragraph>
|
||
<paragraph id="287A842D4F017C25002C8DCA47309348" pageId="4" pageNumber="193">Female [NSMT-Cr 25471, 6.6 mm]. Antenna 1 (Fig. 6A): peduncular articles 1-3 in length ratio of 1.0: 0.7: 0.5; posterior margin of peduncular article 1 with 3 pairs of setae and single seta, posterior margin of peduncular article 2 with 5 clusters of setae, posterior margin of peduncular article 3 with 2 clusters of setae; accessory flagellum 4-articulate; primary flagellum 19-articulate.</paragraph>
|
||
<caption id="B62AE9AB130C9D2D712A8343B5B2FC64" pageId="4" pageNumber="193">
|
||
<paragraph id="09BB5B79E7B1DD603073167E765E50E8" pageId="4" pageNumber="193">
|
||
Figure 6.
|
||
<taxonomicName id="A66E71A7A138314BABB1396CE22EA88D" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
|
||
sp. n., paratype, female (6.6 mm), NSMT-Cr 25471. A peduncular articles 1-3, accessory flagellum, and flagellar articles 1-3 of antenna 1, medial view; B peduncular articles 1-5 and flagellar articles 1-3 of antenna 2, medial view; C gnathopod 1, lateral view; D palmar margin of propodus of gnathopod 1, lateral view; E gnathopod 2, lateral view; F palmar margin of propodus of gnathopod 2, lateral view; G brood plate of gnathopod 2, lateral view.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="4FD3E77D7190CB4CEBDF57C7687D0050" pageId="4" pageNumber="193">Antenna 2 (Fig. 6B): posterior margin of peduncular article 4 with 1 cluster and 4 pairs of setae and single seta, posterior margin of peduncular article 5 with 3 clusters and 2 pairs of setae; flagellum 12-articulate, calceoli absent.</paragraph>
|
||
<paragraph id="B377FE167C6E840BB64129FEEAAF29EA" pageId="4" pageNumber="193">
|
||
Gnathopod 1 (Fig. 6C): posteroproximal part of coxa without setae; carpus length 1.4
|
||
<normalizedToken id="D510A4FDFB90764B1A37B161932F3D13" originalValue="×">x</normalizedToken>
|
||
width; propodus slightly longer than merus and 1.5
|
||
<normalizedToken id="2C516C4EA6D6602291CF0F7A8A7C0113" originalValue="×">x</normalizedToken>
|
||
width; palmar margin (Fig. 6D) with 5 robust setae.
|
||
</paragraph>
|
||
<paragraph id="D9117AEDD6145442E9EBF67B6C24AC21" pageId="4" pageNumber="193">
|
||
Gnathopod 2 (Fig. 6E): posteroproximal part of coxa without setae; carpus length 1.9
|
||
<normalizedToken id="C08024E209EF4F6FC86FC9DA85647EB1" originalValue="×">x</normalizedToken>
|
||
width; propodus almost as long as merus, lenght 1.8
|
||
<normalizedToken id="73A73456E9C45441A49E2884F78C9993" originalValue="×">x</normalizedToken>
|
||
width; palmar margin (Fig. 6F) with 3 robust and 4 pectinate robust setae.
|
||
</paragraph>
|
||
<paragraph id="6B23135822AEE203FC3A4BF46D98F897" pageId="4" pageNumber="193">
|
||
Posterior margin of bases of pereopods 5-7 more expanded than in male (Fig. 7
|
||
<normalizedToken id="E51BA4E794A9FD5A5D8857B3E76E236D" originalValue="A–C">A-C</normalizedToken>
|
||
).
|
||
</paragraph>
|
||
<caption id="AB806A12B4F3DCE0279BE2CC83B75973" pageId="4" pageNumber="193">
|
||
<paragraph id="BC6F48D1DFA7C490431310D27B312358" pageId="4" pageNumber="193">
|
||
Figure 7.
|
||
<taxonomicName id="B0CEA274FA70DE72BD40F62CD4828EBD" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
|
||
sp. n., paratype, female (6.6 mm), NSMT-Cr 25471. A
|
||
<normalizedToken id="40427AB5BF913140F85BD82A85580BAC" originalValue="coxa–ischium">coxa-ischium</normalizedToken>
|
||
of pereopod 5, lateral view; B
|
||
<normalizedToken id="828FD084CDF4A1892BB288762A74D187" originalValue="coxa–ischium">coxa-ischium</normalizedToken>
|
||
of pereopod 6, lateral view; C
|
||
<normalizedToken id="E44496A841E726AA4558B574A40075F0" originalValue="coxa–ischium">coxa-ischium</normalizedToken>
|
||
of pereopod 7, lateral view; D uropod 3, dorsal view.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="5367BB9A64F94D1D1619A1B2BEC62F2D" pageId="4" pageNumber="193">Brood plates (= oostegites) (Fig. 6G): broad, with numerous marginal setae.</paragraph>
|
||
<paragraph id="0FB4FA7720BD7E46BFEEAC2D847F4AC8" pageId="4" pageNumber="193">
|
||
Uropod 3 (Fig. 7D): peduncle length 0.4
|
||
<normalizedToken id="F7404B9159D75A0C06B1748B9A91845C" originalValue="×">x</normalizedToken>
|
||
outer ramus; inner ramus length 0.3
|
||
<normalizedToken id="D950906A31FEDC78DEE047F5178E71FA" originalValue="×">x</normalizedToken>
|
||
outer ramus; inner and outer margins of article 1 of outer ramus each with 2 clusters of setae, plumose setae absent, article 2 length 0.2
|
||
<normalizedToken id="D07861596C1A566B4B7CB73995678F60" originalValue="×">x</normalizedToken>
|
||
article 1.
|
||
</paragraph>
|
||
<paragraph id="B491A48B4663B358896E0B5932623621" pageId="4" pageNumber="193">Egg number 6 (16 in female from Mamurogawa [NSMT-Cr 25473]).</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="422ED419346F37ABF928AA4AE892B0D4" pageId="4" pageNumber="193" type="etymology">
|
||
<paragraph id="52BC61FBBF49C7E0E0DACCB4AB15F2B0" pageId="4" pageNumber="193">Etymology.</paragraph>
|
||
<paragraph id="A6AF10FB542C228F389C68F19FC26431" pageId="4" pageNumber="193">
|
||
<taxonomicName id="89057ACBF05750CB4E84542EE4F9A75C" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
|
||
was named in remembrance of the late Dr Edward Lloyd Bousfield, who enthusiastically guided and encouraged many Japanese amphipodologists, and sadly passed away on 7 September 2016.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="F0C4741C8793FD5B4755918BED5D7728" pageId="4" pageNumber="193" type="distribution">
|
||
<paragraph id="B81D6A52D4131F5C8FC20AE6880E7402" pageId="4" pageNumber="193">Distribution and habitat.</paragraph>
|
||
<paragraph id="D7D72A75AE80D114F50C6959C8EBBB3E" pageId="4" pageNumber="193">This species is known only from Yamagata Prefecture. The specimens were collected from small mountain streams. Ovigerous females were collected from November to April.</paragraph>
|
||
<caption id="42F0C20BF80A85D6DD12B08036F5D61C" pageId="4" pageNumber="193">
|
||
<paragraph id="4956524ACFA4E83283C707EC1A05E461" pageId="4" pageNumber="193">
|
||
Figure 8.
|
||
<taxonomicName id="004DEE30AF5D059C92FADC741B9ECC53" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
|
||
sp. n., not preserved, precopula pair (male: upper, female: lower). Photographed by Ryu Uchiyama.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection id="42645A8EDD330853DB85D3243A5DBD50" pageId="4" pageNumber="193" type="remarks">
|
||
<paragraph id="3635541C24AA98E435721EF8D21D465D" pageId="4" pageNumber="193">Remarks.</paragraph>
|
||
<paragraph id="4A52817437826215737D284211444309" pageId="4" pageNumber="193">
|
||
<taxonomicName id="B36A924B16D4CFAF3108CC8AD575C448" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
|
||
resembles
|
||
<taxonomicName id="2CCF956EE47C7D20CBB5827748E51993" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus paucisetulosus" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="paucisetulosus">Jesogammarus paucisetulosus</taxonomicName>
|
||
closely in having 1) small eyes, 2) posterodistal corner of peduncular article 1 of antenna 1 without robust seta, 3) posterior margins of peduncular articles antennae 1 and 2 with many long setae, 4) outer margin of palp article 2 of maxilla 1 without setae, and 5) ventral margins of coxae of female gnathopods 1 and 2 with few setae. However,
|
||
<taxonomicName id="52097BBFDC187F691800AECC9B929E78" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
|
||
differs from
|
||
<taxonomicName id="EAD4343BBC3E063411E5726BE59E3997" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus paucisetulosus" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="paucisetulosus">Jesogammarus paucisetulosus</taxonomicName>
|
||
by the number of setae on the dorsal margins of pleonites 1-3: each pleonite with more than 4 setae in
|
||
<taxonomicName id="F4E2648AD0C011F2601E58A610E29423" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus bousfieldi" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="bousfieldi">Jesogammarus bousfieldi</taxonomicName>
|
||
vs. 0-3 in
|
||
<taxonomicName id="0FE2438273DFAAF832303230268C22CF" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus paucisetulosus" order="Amphipoda" pageId="4" pageNumber="193" phylum="Arthropoda" rank="species" species="paucisetulosus">Jesogammarus paucisetulosus</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |