Typton distinctus Chace, 1972

Vieira, Rony R. R., Ferreira, Rodrigo S. & D’Incao, Fernando, 2012, Pontoniinae (Crustacea: Decapoda: Caridea) from Brazil with taxonomic key, Zootaxa 3149, pp. 1-38 : 31

Typton distinctus Chace, 1972

T ypton carneus — Holthuis, 1951:162 [in part].

Typton distinctus — Chace, 1972:49; Abele & Kim, 1986:17; Ramos-Porto & Coelho, 1998:340; Coelho et al., 2006:51.

Diagnosis. Rostrum short, spinelike, reaches the base of cornea in females, more elongate in males, dorsal and ventral margins unarmed, ventral margin faintly convex. Basal segment of antennular peduncle with stylocerite short and acute, not reaches the halfway the segment, without anterolateral spine. Scaphocerite reduced to minute oval form. Mandible without palp and with incisor process reduced. First pair of pereopod overreaching the antennular peduncle with part of carpus, fingers smaller than palm. Second pair of pereopods unequal in shape and size. Major pereopod overreaching the antennular peduncle with the chela. Minor pereopod overreaching the antennular peduncle with part of carpus, finger smaller than palm, cutting edge of dactylus with a strong tooth on proximal part and fixed finger with elongate lobe. Third to fifth pereopods with bifid dactyli. Abdomen with all somites rounded. Telson with 2 pairs of dorsal spines and 3 pairs of spines on posterior margin.

Distribution. Western Atlantic: USA (Florida), Mexico (Bahia de La Ascensión), Cuba (Los Arroyos), Brazil (Pernambuco) ( Figure 22 ). ( Chace, 1972; Coelho et al., 2006).

Material examined. None.

Ecological notes. The species occurs in shallow waters associated with sponges ( Chace, 1972; Ramos-Porto & Coelho, 1998).

Figures

FIGURE 22. Distribution of Typton distinctus Chace, 1972.