Ampithoe pseudongana Peart 2007, sp. nov.
Creators: name: Peart, Rachael A.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ampithoidae
Ampithoe
Ampithoe pseudongana

description: <i>Ampithoe pseudongana</i> sp. nov. (Figs 54–57) <b>Type material</b>. Holotype: WAM C38540, male, 9 mm, Shelley Beach, Bunker Bay, near Cape Naturaliste, S of Bussleton, WA, 33°32.56’S 115°01.79’E, 4 Dec 2000, 0.5 m, from mixed brown algae (mainly <i>Sargassum</i> sp.), R. A. Peart. Paratypes: WAM C38541, female, 10 mm, type locality; AM P61877, 15 specimens, type locality; AM P61875 – P61876, 4 specimens, Shelley Beach, Bunker Bay, near Cape Naturaliste, S of Bussleton, WA, 33°32.56’S 115°01.79’E, 4 Dec 2000, 0.5 m, R. Peart; AM P61878 – P61880, 8 specimens, from seagrass, Eagle Beach, near Cape Naturaliste, SW of Bussleton, WA, 33°33.69’S 115°03.90’E, 5 Dec 2000, 0.5 m, R. Peart; AM P61881 – P61884, 25 specimens, Canal Rocks, south of Yallingup, WA, 33°40.28’S 114°59.67’E, 6 Dec 2000, 0.5 m, from <i>Sargassum</i> sp., R. Peart. <b>Diagnosis</b>. Antenna 2 robust, better developed than antenna 1, with short, dense setae on ventral margin. Lower lip with lateral lobe longer than medial lobe. Maxilla 1 inner plate with three slender setae. Gnathopod 1 carpal lobe subacute; carpus shorter than propodus; palm excavate, without midmedial tooth, with a posterodistal tooth defining palm; dactylus subequal in length to palm. Gnathopod 2 without densely setose margins; basis posterodistal lobe large and rounded, with more than 3 slender setae; carpus shorter than propodus; palm acute, entire, with a rounded midmedial tooth, with a small subacute posterodistal tooth defining palm, with 1 defining robust seta; dactylus subequal in length to palm. Pereopod 3 basis narrow; merus expanded. Pereopods 5–7 weakly prehensile. Pereopod 5 merus subrectangular. Uropod 3 peduncle with 10 distal robust setae, outer ramus shorter than inner ramus, with patch of small conical lateral denticles, without lateral setal fringe; inner ramus with 7 distal robust setae. Telson distally rounded, apical cusps small. <b>Description</b>. Based on holotype, male, 9 mm, WAM C38540. <i>Head</i> as long as deep. <i>Antenna 2</i> peduncular article 4 longer than article 5; flagellum 14-articulate. <i>Mandible</i> molar with 4 or 5 robust setae in accessory setal row; palp stout, long, apically setose, article 1 shorter than article 2 (0.32 x), article 2 longer than article 3 (1.3 x), article 3 longer than article 1 (2.38 x). <i>Lower lip</i> mandibular lobe with curved margins, rounded apically. <i>Maxilla 1</i> palp with apical robust setae. <i>Maxilla 2</i> inner plate narrow, outer plate broader. <i>Maxilliped</i> outer plate with developed setation (robust setae large). <i>Pereon</i>. <i>Gnathopod 1</i> coxa subequal to gnathopod 2 coxa, produced distoventrally, distoventral margin rounded, anterior margin concave, ventral margin with a row of small setules; basis subequal to coxa, with sparse (sometimes plumose) slender setae, posterodistal lobe reduced, 2 or 3 slender setae; merus produced to form a small, acute distoventral lobe, anterior margin with setae absent; carpus longer than merus, subtriangular, anterior margin with 1 robust seta and slender setae; propodus narrow (length 1.66 x width), subrectangular; palm with 1 defining robust seta; dactylus inner margin denticulate. <i>Gnathopod 2</i> coxa ventral margin with a row of small setules; basis shorter than coxa, with fringe of long, slender, plumose setae; merus produced to form a short, subacute distoventral lobe, anterior margin with setae absent; carpus longer than merus, subtriangular, anterior margin with slender setae only; propodus broad (length 0.97 x width), subtriangular, not produced into an anterodistally setose lobe; dactylus tapering evenly, acute, inner margin denticulate. <i>Pereopod 5</i> basis with marginal robust setae, with medial slender setae; distal articles slender; propodus slightly expanded distally, subrectangular, with 3 distal simple striated robust setae; dactylus strongly curved. <i>Pereopod 6</i> basis posterior margin rounded proximally, straight distally, with marginal robust setae, without medial slender setae; merus subrectangular; propodus slightly expanded distally, with 3 distal simple striated robust setae; dactylus strongly curved. <i>Pereopod 7</i> basis with marginal robust setae, with medial slender setae; propodus defined distally by 3–5 simple robust setae. <i>Pleon</i>. <i>Epimeron 3</i> posteroventral corner broadly rounded. <i>Uropod 1</i> peduncle with more than 5 robust setae, with a long setal fringe; inner ramus slightly shorter than outer ramus, with more than 5 marginal robust setae, slender setae absent; outer ramus with 3–5 marginal robust setae, slender setae absent. <i>Uropod 2</i> peduncle with more than 5 robust setae, setal fringe absent; inner ramus slightly shorter than outer ramus, with more than 5 marginal robust setae, slender setae absent; outer ramus with 3–5 marginal robust setae, slender setae absent. <i>Uropod 3</i> peduncle longer than broad (1.37 x width), short with respect to the rami length (1.94 x), with marginal robust setae absent, marginal slender setae absent, with more than 5 distal slender setae; inner ramus with more than 5 distal slender setae. <i>Telson</i> with apical and lateral slender setae. <b>Female.</b> (sexually dimorphic characters). Based on paratype, 10 mm, WAM C38541. <i>Antenna 1</i> longer than antenna 2; peduncular article 1 longer than article 2 (1.31 x), article 2 longer than article 3 (3.3 x), article 3 shorter than article 1 (0.23 x); primary flagellum with 14 articles; accessory flagellum absent. <i>Antenna 2</i> with sparse setae on ventral margin; flagellum with 22 articles. <i>Gnathopod 1</i> subequal in size to gnathopod 2, not densely setose on margins; basis shorter than coxa, with fringe of long, slender, plumose setae, posterodistal lobe small and round; merus produced to form a short, rounded distoventral lobe; carpus anterior margin with slender setae only; propodus ovoid; palm convex, without posterodistal tooth defining the palm. <i>Gnathopod 2</i> basis with sparse (sometimes plumose) slender setae, posterodistal lobe small and round; propodus ovoid; palm without a midmedial tooth. <b>Etymology</b>. This species is very similar to <i>A. ngana</i> Poore &amp; Lowry, 1997, from the east coast of Australia, the species name alludes to this similarity. <b>Remarks</b>. <i>Ampithoe pseudongana</i> <b>sp. nov.</b> is similar to <i>A. ngana, A. eremitis</i> <b>sp. nov.</b>, <i>A. hiana</i> <b>sp. nov.</b> and <i>A. peronana</i> <b>sp. nov.</b>, but is closest in morphology to <i>A. hiana</i>. Characters distinguishing <i>A. pseudongana</i> from <i>A. hiana</i> are outlined under the account of the latter. <b>Habitat</b>. Brown algae: <i>Cystophora</i> sp., <i>Sargassum</i> sp. <b>Distribution</b>. Cape Naturaliste, Western Australia, Australia.
description: Published as part of <i>Peart, Rachael A., 2007, A review of the Australian species of Ampithoe Leach, 1814 (Crustacea: Amphipoda: Ampithoidae) with descriptions of seventeen new species, pp. 1-95 in Zootaxa 1566 (1)</i> on pages 69-74, DOI: 10.11646/zootaxa.1566.1.1, http://zenodo.org/record/5096061
description: {"references": ["Poore, A. G. B. &amp; Lowry, J. K. (1997) New ampithoid amphipods from Port Jackson, New South Wales, Australia (Crustacea: Amphipoda: Ampithoidae). Invertebrate Taxonomy, 11 (6), 897 - 941."]}