Australian Amphipoda: Leucothoidae

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

Anamixis ningaloo Thomas

Anamixis ningaloo Thomas, 1997: 64, fig. 14.

Type material. HOLOTYPE: male "W", 2.63 mm, AM P41031.

Type locality. Living Acropora, 2 m depth, inside outer reef off Ned's Fish Camp, Ningaloo Reef, Western Australia (21º 59'S 113º 55'E).

Description. Based on Thomas, 1997: 64, fig. 14 [Ningaloo Reef, Western Australia].

Head lateral cephalic lobe without cusp; cephalic keel absent; rostrum small to medium in size. Antenna 2 slender. Mandibles and maxillae vestigial, forming a ventral keel, ventral keel with anteroventral spine. Maxilliped ischial endite (outer plate) vestigial or absent, without lateral flange.

Peraeon. Gnathopod 1 coxa small or absent, hidden by coxa 2, anteroventral corner produced, anteroventral corner subtiangular, notched; dactylus vestigial. Gnathopod 2 coxa at least as long as broad, rounded anteroventrally; carpus with simple apex; propodus palm convex, propodus palm strongly crenulate anterodistally, weakly crenulate to smooth posteroproximally; dactylus, inner margin tuberculate. Peraeopod 3 coxa longer than broad, anteroventral corner overriding lateral face of coxa 2, not extending freely below it, ventral margin slightly convex. Peraeopod 4 coxa, posterior margin with posteroventral lobe (weak). Peraeopods 5 to 7 basis expanded.

Pleon. Epimeron 3 posteroventral corner narrowly rounded.

Male (sexually dimorphic characters). Mandibles and maxillae vestigial, forming a ventral keel.

Habitat. Marine; living on the hermatypic coral, Acropora on shallow reefs.

Depth zone. Littoral.

Remarks. Female unknown.

Distribution. Western Australia: Ningaloo Reef (Thomas, 1997).

Geographic areas. North-western Australia.

Cite this publication as: Lowry, J.K. P.B Berents & R.T. Springthorpe (2000 onwards). 'Australian Amphipoda: Leucothoidae.' Version: 2 October 2000. https://crustacea.net/'.