Aoroides parvus Myers, 2009, sp. nov.
Creators: name: Myers, Alan A.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Aoridae
Aoroides
Aoroides parvus

description: <i>Aoroides parvus</i> sp. nov. (Figs 3, 4) <b>Type material.</b> Holotype, male 1.8 mm, AM P70701, Watsons Bay, Lizard Island (14°39.689'S 145°26.872'E), scrapings from mooring block, sandy bottom with mounds and <i>Udotea</i>, 8.3 m, P.B. Berents &amp; L. Hughes, 24 February 2005 (QLD 1636). Paratypes: 3 males, 4 females, AM P75465 (QLD 1636), 3 males, 9 females, AM P70716 (QLD 1636), same data. <b>Type locality.</b> Watsons Bay, Lizard Island, Queensland, Australia (14°39.689'S 145°26.872'E). <b>Etymology.</b> Referring to its diminutive size. <b>Description.</b> Based on holotype, male, 1.8 mm, AM P70701. <b>Head.</b> <i>Head</i> lateral cephalic lobes apically round, <i>Antenna 1</i> flagellum with about 9 articles; accessory flagellum absent. <i>Antenna 2</i> with few long setae. <i>Lower lip</i> with fine setae only. <i>Maxilla 1</i> inner plate with 1 long pectinate apical seta. <i>Mandible</i>, palp article 3 longer than 2, posterior margin straight, posterior margin without setae <b>Pereon.</b> <i>Pereonites</i> without sternal spines. <i>Gnathopod 1</i> enlarged in males only; coxa weakly produced anterodistally; basis slender, less than half as broad as long, without a spine, posterodistal margin with setae absent, anterodistal margin with weak flange; ischium anterior margin without flange, posterodistal margin without setae; merus greatly elongated, distally free and produced along posterior margin of carpus, posterior margin with few setae, without posterodistal spine; carpus longer than propodus, anterior margin without setae, without spine, posterior margin without spines; propodus anterior margin with few setae, posterior margin straight, palm absent; dactylus less than half length of propodus. <i>Gnathopod 2</i> subchelate; basis anterodistal margin straight, without flange, posterodistal margin without robust setae; merus not enlarged; carpus longer than propodus, anterior margin not lobate, with short, sparse setae; propodus anterior margin with short sparse setae, with robust seta defining palm. <i>Pereopod 3</i> without brush of long setae on merus. <i>Pereopod 6</i> basis not or weakly produced posterodistally. <i>Pereopod 7</i> significantly less than 125% length of pereopod 6. <b>Pleon.</b> <i>Epimeron 3</i> posterodistal margin with small notch. <i>Uropod 1</i> rami subequal, peduncle much longer than broad, distoventral spine shorter than peduncle. <i>Uropod 2</i> biramous, inner ramus longer than outer ramus, peduncle with short distoventral spine less than one quarter length of peduncle. <i>Uropod 3</i> biramous, rami subequal, inner ramus shorter than peduncle. <i>Telson</i> with distal fine setae only. <b>Female</b> (sexually dimorphic characters). Based on paratype, female, 2.1 mm, AM P75465. <i>Gnathopod 1</i> merus not greatly elongated, not distally free; carpus shorter than that of male, subequal with propodus. <i>Gnathopod 2</i> more slender than that of male, carpus shorter than propodus. <b>Habitat.</b> Among encrusting flora and fauna on mooring block, over sandy bottom. <b>Remarks.</b> <i>A. parvus</i> differs from most described species of <i>Aoroides</i> by the poorly setiferous male gnathopod 1 and by the very short dactylus of that appendage. It differs from <i>A. nahili</i> J.L. Barnard, 1970 in having the merus of the male gnathopod 1 shorter than the carpus, inward curved and not ending acutely and from <i>A. columnaris</i> Ariyama, 2004 and <i>A. curvipes</i> Ariyama, 2004 in the weakly produced male coxa 1. <b>Distribution.</b> <i>Australia</i>. Queensland: Lizard Island (current study).
description: Published as part of <i>Myers, Alan A., 2009, Aoridae *, pp. 220-278 in Zootaxa 2260 (1)</i> on pages 223-225, DOI: 10.11646/zootaxa.2260.1.9, http://zenodo.org/record/5321091
description: {"references": ["Barnard, J. L. (1970) Sublittoral Gammaridea (Amphipoda) of the Hawaiian Islands. Smithsonian Contributions to Zoology, 34, 1 - 286.", "Ariyama, H. (2004) Nine species of the genus Aoroides (Crustacea: Amphopoda: Aoridae) from Osaka Bay, Central Japan. Publications of the Seto Marine Biological Laboratory, 40 (1 / 2), 1 - 66."]}