Protorchestia Bousfield, 1982

Serejo, C. S. & Lowry, J. K., 2008, The Coastal Talitridae (Amphipoda: Talitroidea) of Southern and Western Australia, with Comments on Platorchestia platensis (Krøyer, 1845), Records of the Australian Museum 60 (2), pp. 161-206 : 196

Protorchestia Bousfield, 1982

Protorchestia Bousfield, 1982: 7 ; Richardson, 1996: 580 (key).

Type species. Orchestia nitida Dana, 1852 .

Diagnosis. Antenna 2 geniculate and not sexually dimorphic. Mandible left lacinia mobilis 5-dentate. Maxillipedal palp dactylus present, distinct. Gnathopod 2 subchelate; narrow or slightly expanded; propodus palm posterodistal corner without protuberance. Pereopods 3–7 simplidactylate. Pereopod 4 carpus similar in length to pereopod 3 carpus. Pereopods 6–7 not sexually dimorphic. Pereopod 7 basis lateral sulcus present, slightly pronounced. Gills simple, sac-like and similar in size. Oostegites 2–5 setae curl-tipped. Pleopods all well developed. Uropods 1–2 outer rami without marginal robust setae. Telson as long as or longer than broad without robust setae or with 2–5 robust setae per lobe.

Species composition. Protorchestia contains four species: P. campbelliana (Bousfield, 1964) ; P. ceduna n.sp., P. lakei Richardson, 1996 ; and P. nitida ( Dana, 1852) .