Transorchestia 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 : 200

Transorchestia Bousfield, 1982

Transorchestia Bousfield, 1982: 19 .

Type species. Orchestia chiliensis Milne-Edwards, 1840 .

Diagnosis. Antenna 2 not geniculate, sexually dimorphic. Mandible left lacinia mobilis 4-dentate. Maxillipedal palp dactylus present, reduced. Gnathopod 2 subchelate; basis slightly or strongly expanded; propodus palm posterodistal corner without protuberance. Pereopods 3–7 cuspidactylate. Pereopod 4 carpus significantly shorter than carpus of pereopod 3. Pereopods 6–7 sexually dimorphic. Pereopod 7 basis lateral sulcus present, slightly pronounced. Gills lobate and/or convoluted; gills 3–5 smaller than gills 2 and 6. Oostegites 2–5 setae curl-tipped. Pleopods all well developed. Uropods 1–2 outer rami with marginal robust setae. Telson longer than broad with more than 10 robust setae per lobe.

Species composition. Transorchestia contains 7 species: T.?bollonsi (Chilton, 1909); T. chiliensis (Milne Edwards, 1840) ; T. enigmatica (Bousfield & Carlton, 1967) ; T. gracilis (Chilton, 1920) ; T. marlo n.sp.; T. miranda (Chilton, 1916) ; and T. serrulata ( Dana, 1852) .

Remarks. Hurley (1957) considered that T. chiliensis occurred in New Zealand and included Orchestia serrulata Dana, 1852 , also described from New Zealand, as its junior synonym. Bousfield (1982) redescribed T. chiliensis based on material from Chile and stated that Hurley’s material from New Zealand was not T. chiliensis . Based on the opinion of Bousfield (1982) and our own assessment of Hurley’s (1957) description we reject T. chiliensis from New Zealand and replace it with the next available name, Transorchestia serrulata ( Dana, 1852) . Hurley designated as hypotypes: slides No. 19, male; female, Quail Island, Lyttelton, 10 October 1903, in the Chilton collection, Canterbury Museum. We here designate the male as a neotype of Transorchestia serrulata ( Dana, 1852) .