Australian Amphipoda: Aoridae

J.K. Lowry, P.B. Berents & R.T. Springthorpe

Globosolembos lunatus Myers, 1988b: 329, figs 55-56.

Type material. HOLOTYPE: male, 6.3 mm, NMV J14036. PARATYPES: 10 females, 9 males, NMV J13664.

Type locality. Western Port, Victoria (38º29.78'S 145º06.28'E), sand.

Description. Based on Myers, 1988: 329, figs 55-56 [Western Port].

Head. Rostrum absent or vestigial. Antenna 1 accessory flagellum present and multiarticulate. Antenna 2 with few long setae. Labium with fine setae and stout setae. Mandible, palp article 3 longer than 2, posterior margin straight or weakly falcate, mandible palp posterior margin setae of more than two distinct lengths.

Peraeon. Sternal spines present, on other pereonites, apically rounded. Gnathopod 1 enlarged in both sexes; coxa unproduced anterodistally, or distinctly produced anterodistally, rounded; basis robust, half or more as broad as long, without a spine, anterior margin without stridulating ridges, posterodistal margin with setae sparse or absent, anterodistal margin with strong flange, with a weak distomedial lobe or absent; ischium anterior margin without flange, posterior margin with setae sparse or absent; merus not greatly elongated, fused along its entire length with carpus, posterior margin with sparse setae or setae absent, without posterodistal spine; carpus two thirds length of propodus, anterior margin without stridulating ridges, with setae sparse or absent, anterior surface with no spine, without an oblique row of long setae on medial face, posterior margin without spines; propodus longer than carpus, anterior-distal margin densely clothed in long setae, posterior margin straight or evenly convex, palm present, palm delimited from posterior margin, margin forming a broad excavate sinus, palm defined by subquadrate corner or defined by rounded or oblique corner, with robust seta defining palm, with spine near base of dactylus, with subquadrate spine or with subtriangular, apically subacute or rounded spine; dactylus about half length of propodus, fitting palm. Gnathopod 2 subchelate; basis anterodistal margin with flange, posterodistal margin without robust setae; with few setae along length of basis; carpus longer than propodus, anterior margin not lobate, densely setose; propodus densely setose, palm with robust seta(e) defining palm.

Pleon. Epimeron 3 posterodistal margin rounded. Uropod 1 biramous, rami rami subequal, peduncle much longer than broad, distoventral interramal spine shorter than peduncle. Uropod 2 peduncle with distoventral interramal spine. Uropod 3 biramous, outer ramus shorter than inner, inner ramus one and one half times length of peduncle.

Habitat. 13 -24 m depth on sandy bottom.

Depth zones. Littoral (13 to 24 m depth).

Distribution. Victoria: Western Port (Myers, 1988b).

Geographic areas. Southern Australia, or South-western Australia.

Peraeon. Sternal spines absent. Gnathopod 1 margin entire, palm defined by subquadrate corner. Gnathopod 2 carpus subequal with or shorter than propodus.

Cite this publication as: 'J.K. Lowry, P.B. Berents & R.T. Springthorpe (2001 onwards). Australian Amphipoda: Aoridae. Version 1: 2 October 2000. https://crustacea.net/'. Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993, 1995, 2000) should also be cited (see References).

Index