Processa peruviana Wicksten, 1983

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

Processa peruviana Wicksten, 1983

( Fig. 24G)

Processa canaliculata Rathbun 1904: 110 (part). — Schmitt 1921: 81 (part), pl. 12, fig. 6. [Not Processa canaliculata Leach, 1815 ; western European species].

Processa sp. ? — Méndez 1981: 98, fig. 294.

Processa peruviana Wicksten 1983b ; 29, figs. 4–6. — Montagne & Cadien 2001: 202. — Wicksten & Hendrickx 2003: 68.

Diagnosis. Rostrum simple, slightly shorter than cornea. Carapace with antennal tooth. First segment of antennular peduncle exceeding setose, setose, without ventral tooth. Stylocerite very short, not reaching half of length of first segment. Scaphocerite elongate, exceeding both antennular, antennal peduncles, with small anterolateral tooth. Third maxilliped with exopod. Right pereopod 1 chelate, left pereopod 1 with simple, hooked dactyl. Left pereopod 2 shorter than right, with 21 to 22 carpal articles. Right pereopod 2 elongate, about equal in length to entire body, with 49–55 carpal articles. Pereopods 3–5 long, slender, with simple dactyls. Male to 23.0 mm, female to 41.7 mm.

Color in life. Not reported.

Habitat and depth. Sand or mud, 31–107 m.

Range. Off Palos Verdes Peninsula, California to north of Mancora , Peru including Galapagos Is. Type locality Manuelita Is., Costa Rica .

Remarks. Manning & Chace (1971) clarified the nomenclature of western Atlantic species of the genus Processa , including comparisons of P. canaliculata to American species. Processa peruviana differs from the European species in the numbers of carpal articles of the right second pereopod and having a tooth on the lobe of abdominal somite 6. Both Rathbun (1904) and Schmitt (1921) included both A. panamensis and P. peruviana in their accounts as P. canaliculata .

Montagne & Cadien (2001: 202) noted that the specimens of P. peruviana from California were gravid, but that "no juveniles have yet been taken in the area", suggesting the recruitment has been unsuccessful.