Ambidexter panamensis Abele, 1972

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 96-97

Ambidexter panamensis Abele, 1972

( Fig. 24B–E)

Processa canaliculata . — Rathbun 1904: 110 (part). — Schmitt 1921: 81 (part); not pl. 12, fig. 6 (photograph of P. peruviana ; see Wicksten 1983b: 30). [Not Processa canaliculata Leach, 1815 ; western European species, see Manning & Chace 1971: 15].

Ambidexter panamensis Abele, 1972: 373 , figs. 4–5. — Wicksten 1983b: 31. — Wicksten & Hendrickx 2003:68.

Diagnosis. Rostrum with simple apex, not extending to midpoint of eyestalk. Anterior margin of carapace with strong antennal tooth, no other teeth. First segment of antennular peduncle with small tooth on ventral surface, other segments unarmed, stylocerite round and not exceeding first segment. Scaphocerite reaching distal margin of last segment of antennular peduncle, rounded and with strong anterolateral tooth. Pereopods 1 subequal, chelate. Pereopods 2 equal, carpus with 12 or 13 articles. Pereopods 3–5 slender, with simple dactyls. Pleura of abdominal somites 1–4 rounded, pleura of somite 5 rounded to bluntly angled; pleura of somite 6 with acute posterolateral teeth. Telson with two pairs strong dorsal spines, two pair terminal spines flanking sharp point. Male total length 12 mm, female 17 mm.

Color in life. Translucent.

Habitat and depth. Sand, mud or rock, usually shallow, to 65 m

Range. San Diego, California; Gulf of California ; Panama , Galapagos Is. Type locality Naos I., Canal Zone , Panama .

Remarks. The only records of this species in California are from San Diego Bay, where it has been collected subtidally on muddy bottoms. It is common from western Mexico southward.