Ampithoe waialua J. L. Barnard 1970
Creators: name: Hughes, L. E.
name: Lowry, J. K.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ampithoidae
Ampithoe
Ampithoe waialua

description: <i>Ampithoe waialua</i> J.L. Barnard, 1970 (Figs 9, 10, Pl. 1C) <i>Ampithoe waialua</i> J.L. Barnard, 1970 a: 53: figs 20, 21. –J.L. Barnard, 1970 b: 34, 37: figs 9w, 10w, 11w, 12w, 13w. — Barnard &amp; Karaman, 1991: 103. <i>Ampithoe hiana</i> Peart, 2007b: 27, figs 18–21. <b>Material examined.</b> 1 male, AM P61836 (QLD 1333); 1 female, AM P61837 (QLD 1333); 1 unsexed, photo 2, AM P70796 (QLD 1670); 1 dissected male, 8.0 mm, 4 slides, AM P76974 (QLD 1770); 1 dissected female, 7.5 mm, 5 slides, AM P76976 (QLD 1770); 1 unsexed, AM P76981 (QLD 1770); 9 unsexed, AM P76975 (QLD1894); 11 unsexed, AM P76978 (QLD 1897); 2 unsexed, AM P75660 (QLD 1945); 2 unsexed, AM P76980 (QLD 1948); 1 unsexed, AM P76979 (QLD 1966); 13 unsexed, AM P75658 (QLD 1966); 5 unsexed, AM P75657 (QLD 1967); 4 unsexed, AM P75659 (QLD 1969); many unsexed, AM P76977 (QLD 2006). <b>Type locality</b>. 1 mile north of Kualoa Point, Oahu, Hawaiian Islands (~ 21°30’00”N 157°50’00”W), intertidal in algae and dead coral heads. <b>Description.</b> Based on male, 5 mm, AM P61836. <b>Head.</b> <i>Head</i> as long as deep. <i>Antenna 1</i> longer than antenna 2; peduncular article 1 subequal to article 2; flagellum 18 articles; accessory flagellum absent. <i>Antenna 2</i> peduncle not densely setose on ventral margin; article 4 longer than article 5; flagellum 10 articles. <i>Upper lip</i> directed nearly straight down, lateral margins each with midlateral notch. <i>Mandible</i> molar well developed, triturating, accessory setal row with 4 serrate setae; palp 3–articulate, marginally setose; article 1 shorter than article 2; article 2 subequal in length to article 3, slender setae present. <i>Lower lip</i> outer plates forming a deep medial notch, lateral lobe distinctly longer than medial lobe; mandibular lobe with curved margins, rounded apically. <i>Maxilla 1</i> inner plate with 1 setae; palp article 2 slender. <i>Maxilla 2</i> inner plate narrower than outer plate. <i>Maxilliped</i> outer plate with row of large robust setae along medial margin. <b>Pereon.</b> <i>Coxae 1–4</i> deeper than broad. <i>Gnathopod 1</i> subequal in size to gnathopod 2; coxa larger than coxa 2, anteroventrally produced, anterior margin straight, anteroventral corner rounded; basis subequal in length to coxa, anterodistal lobe rounded, with 1 slender seta; merus posterodistal lobe subacute; carpus about as long as broad, shorter than propodus, anterior margin with 2 robust setae, posterior margin subacute; propodus narrow, subrectangular; palm acute, excavate, with a posterodistal tooth, with 1 robust seta defining palm; dactylus overreaching palm, inner margin crenate. <i>Gnathopod 2</i> coxa without long, plumose setal fringe on ventral margin; basis with sparse slender setae, anterodistal corner with 2 robust setae; merus margin with short, subacute anterodistal lobe; carpus shorter than propodus, subtriangular, anterior margin with single robust seta; propodus broad, less than 1.5 x as long as broad, subovoid, produced into an anterodistally setose lobe, anterior margin with fringe of slender setae; palm acute, concave, with posterodistal tooth, short (length 1 x breadth), apically acute, without palm defining robust seta; dactylus equal in length to palm, tapering evenly, apically acute, inner margin crenate. <i>Pereopods 3–4</i> basis slightly expanded; merus longer than carpus. <i>Pereopods 5–7</i> weakly prehensile. <i>Pereopod 5</i> basis with 2 anteroproximal robust setae, without medial slender setae; distal articles slender; propodus not expanded distally, with 3 anterodistal striated robust setae; dactylus slightly curved. <i>Pereopod 6</i> basis posterior margin rounded, with several marginal robust setae; distal articles slender; propodus not expanded distally, with 3 anterodistal striated robust setae; dactylus slightly curved. <i>Pereopod 7</i> similar to pereopod 6. <b>Pleon.</b> <i>Epimera 2–3</i> posteroventral corner broadly rounded. <i>Uropod 1</i> peduncle with 8 robust setae, with long fringe of slender setae (greater than 0.5 x length of peduncle), distoventral spine absent; outer ramus with 3 lateral robust setae; inner ramus with 3 lateral robust setae. <i>Uropod 2</i> peduncle with 3 robust setae; outer ramus with 3 lateral robust setae; inner ramus with 3 lateral robust setae. <i>Uropod 3</i> peduncle longer than broad, more than 2 x length of rami, without marginal slender setae, with 3 distal robust setae, without distal slender setae; outer ramus with 2 large recurved distal robust setae, without lateral robust or slender setae; inner ramus with 1 distal slender seta, with 3 lateral robust setae. <i>Telson</i> subtriangular, apically rounded, with small apical cusp on each distolateral corner, with 2 pair of lateral and 1 pair of apical slender setae and with 1 pair of apical plumose setae. <b>Female</b> (sexually dimorphic characters). Based on female, 6 mm, AM P61837. <i>Gnathopod 1</i> subequal in size to gnathopod 2; basis subequal in length to coxa; carpus anterior margin with slender setae; palm straight, with posterodistal corner acute; dactylus subequal in length to palm. <i>Gnathopod 2</i> basis anterodistal corner with 1 slender setae; propodus not produced into an anterodistally setose lobe; palm straight, slightly produces at palmar defining robust setae; dactylus subequal in length to palm. <b>Colour.</b> Body pale pink with small brown spots and large white spots. <b>Habitat.</b> Brown algae, mainly <i>Dictyota</i> sp, as well as on red algae, submerged mooring rope and hydroids. <b>Remarks.</b> <i>Ampithoe hiana</i> Peart, 2007b is placed in synonymy with <i>Ampithoe waialua</i> J.L. Barnard, 1970 a, originally described from Hawaii. Great Barrier Reef material of <i>A. waialua</i> differs only slightly from the original description. Male and females of <i>Ampithoe waialua</i> from the GBR have slender setae present on the anterior margin of the gnathopod 1 propodus and more robust setae on the uropod 1 peduncle. In the Hawaiian types the slender setae are apparently absent and there more robust setae on uropod 2 rami. <i>Ampithoe waialua</i> is superficially similar to two other GBR species, <i>A. katae</i> and <i>A. cookana</i>, in the form of the male gnathopods. However these species can be distinguished by the palm of male gnathopod 1, which is excavate in <i>A. waialua</i> and entire in <i>A. katae</i> and <i>A. cookana</i>. Living specimens <i>A. waialua</i> and <i>A. katae</i> can be distinguished by colour. <i>Ampithoe waialua</i> is pale pink with small brown spots and larger white splotches, while <i>A. katae</i> is translucent orange. <b>Distribution.</b> <i>Australia</i>. Queensland: Torres Strait (current study); Heron Island (Peart 2007b); One Tree Island (current study). <i>USA</i>. Hawaiian Islands: Kualoa Point, Oahu (J.L. Barnard 1970 a).
description: Published as part of <i>Hughes, L. E. &amp; Lowry, J. K., 2009, Ampithoidae *, pp. 153-219 in Zootaxa 2260 (1)</i> on pages 167-171, DOI: 10.11646/zootaxa.2260.1.8, http://zenodo.org/record/5322208
description: {"references": ["Barnard, J. L. (1970) Sublittoral Gammaridea (Amphipoda) of the Hawaiian Islands. Smithsonian Contributions to Zoology 34, 1 - 286.", "Barnard, J. L. &amp; Karaman, G. S. (1991) The families and genera of marine gammaridean Amphipoda (except marine gammaroids). Records of the Australian Museum, Supplement, 13 (1 &amp; 2), 1 - 866.", "Peart, R. A. (2007 b) A review of Australian species of Ampithoe Leach, 1814 (Crustacea: Amphipoda: Ampithoidae) with descriptions of seventeen new species. Zootaxa, 1566, 1 - 95."]}