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

description: <i>Ampithoe katae</i> sp. nov. (Figs 26–29) <b>Type material</b>. Holotype: AM P61842, male, 5 mm, Mangrove Beach, Lizard Island, Great Barrier Reef, QLD, 14°40.99’S 145°27.63’E, 19 Nov 1999, 1 m, on <i>Turbinaria</i> sp., R. Peart. Paratypes: AM P61843, female, 6 mm, type locality; AM P61844, 6 specimens, type locality; AM P61845, 1 specimen, Coconut Beach, Lizard Island, Great Barrier Reef, 14°40.81’S 145°28.41’E, 17 Nov 1999, 1.5 m, on seagrass, R. Peart; AM P61846, 2 specimens, Coconut Beach, Lizard Island, Great Barrier Reef, 14°40.81’S 145°28.41’E, 17 Nov 1999, 1.5 m, on <i>Turbinaria</i> sp., M. Huggett &amp; K. Dempsey; AM P61847, 1 specimen, Crystal Beach, Lizard Island, Great Barrier Reef, 14°40.99’S 145°28.38’E, 18 Nov 1999, 3.2 m, on <i>Turbinaria</i> sp., M. Huggett &amp; R. Peart; AM P61848, 4 specimens, Mangrove Beach, Lizard Island, Great Barrier Reef, 14°40.99’S 145°27.63’E, 19 Nov 1999, 3 m, on green algae, R. Peart; AM P61849, 6 specimens, Mangrove Beach, Lizard Island, Great Barrier Reef, 14°40.99’S 145°27.63’E, 19 Nov 1999, 1 m, on <i>Turbinaria</i> sp., M. Huggett; AM P61850, 2 specimens, off Casaurina Beach, Lizard Island, Great Barrier Reef, 14°40.63’S 145°26.71’E, 21 Nov 1999, 1 m, on green algae, M. Huggett, R. Peart &amp; K. Dempsey. <b>Diagnosis</b>. Antenna 2 slender, similar to antenna 1, not densely setose 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 convex, without midmedial tooth, without posterodistal tooth defining palm; dactylus subequal in length to palm. Gnathopod 2 without densely setose margins; basis posterodistal lobe large and rounded, with 1 robust seta; carpus shorter than propodus; palm acute, excavate, without a 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 narrow. Pereopods 5–7 simple. Pereopod 5 merus subrectangular. Uropod 3 peduncle with 4 distal robust setae, outer ramus subequal in length to inner ramus, without patch of small conical lateral denticles, without lateral setal fringe; inner ramus with 3 distal robust setae. Telson distally truncated, apical cusps small. <b>Description</b>. Based on holotype male, 5 mm, AM P61842. <i>Head</i> as long as deep. <i>Antenna 1</i> longer than antenna 2; peduncular article 1 subequal to article 2 (0.98 x), article 2 longer than article 3 (2.56 x), article 3 shorter than article 1 (0.4 x); primary flagellum with 17–20 articles. <i>Antenna 2</i> peduncular article 4 subequal to article 5; flagellum 11 articulate. <i>Mandible</i> molar with 4–6 robust setae in the accessory setal row; palp stout, long, setose along posterior margin, article 1 shorter than article 2 (0.33 x), article 2 longer than article 3 (1.35 x), article 3 longer than article 1 (2.22 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> without densely setose margins; coxa larger than gnathopod 2 coxa, produced distoventrally, distoventral margin rounded, anterior margin concave, ventral margin, with a row of small setules; basis shorter than coxa, with sparse (sometimes plumose) slender setae, posterodistal lobe small and rounded, 1 slender seta; merus produced to form a small, subacute distoventral lobe, anterior margin with setae absent; carpus longer than merus, subtriangular, anterior margin with 2 robust setae and slender setae; propodus narrow (length 1.94 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 subequal to coxa, with sparse slender setae; merus produced to form a short, subacute distoventral lobe, anterior margin with setae absent; carpus longer than merus, subtriangular, anterior margin with 2 robust setae and slender setae; propodus broad (length 1.31 x width), ovoid, produced into an anterodistally setose lobe; dactylus tapering evenly, acute, inner margin denticulate. <i>Pereopod 5</i> basis with marginal robust setae, without medial slender setae; distal articles slender; propodus not 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, without 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 3–5 robust setae, with long setal fringe; inner ramus slightly longer than outer ramus, with 1 or 2 marginal robust setae, slender setae absent; outer ramus with more than 5 marginal robust setae, slender setae absent. <i>Uropod 2</i> peduncle with 1 or 2 robust setae, setal fringe absent; inner ramus slightly longer than outer ramus, with more than 5 marginal robust setae, slender setae absent; outer ramus with more than 5 marginal robust setae, slender setae absent. <i>Uropod 3</i> peduncle longer than broad (1.49 x width), short with respect to the rami length (1.92 x), with marginal robust setae absent, marginal slender setae absent, with 1 or 2distal slender setae; inner ramus with 1 or 2distal slender setae. <i>Telson</i> with oblique lateral and medial rows of slender setae. <b>Female.</b> (sexually dimorphic characters). Based on paratype, female, 6 mm, AM P61843. <i>Gnathopod 1</i> subequal in size to gnathopod 2; coxa subequal in size to gnathopod 2 coxa; merus produced to form a short, rounded distoventral lobe; carpus anterior margin with 1 robust setae and slender setae. <i>Gnathopod 2</i> basis shorter than coxa, posterodistal lobe small and round, with 2 or 3 slender setae; propodus not produced anterodistally; palm entire, without tooth defining palm. <b>Etymology</b>. This species is named for Kate Dempsey who assisted in the collection of this species and others from Lizard Island. <b>Remarks</b>. <i>Ampithoe katae</i> <b>sp. nov.</b> is most similar to <i>A. cookana</i> <b>sp. nov.</b> Characters distinguishing <i>A. katae</i> and <i>A. cookana</i> are outlined under the account of the latter. <b>Habitat</b>. <i>Ampithoe katae</i> was collected from <i>Turbinaria</i> sp. and green algae from 1–3.5 m depth. <b>Distribution</b>. Lizard Island, Queensland, 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 37-42, DOI: 10.11646/zootaxa.1566.1.1, http://zenodo.org/record/5096061