Typton carneus Holthuis, 1951

Pachelle, Paulo P. G., Anker, Arthur, Mendes, Cecili B. & Bezerra, Luis E. A., 2016, Decapod crustaceans from the state of Ceará, northeastern Brazil: an updated checklist of marine and estuarine species, with 23 new records, Zootaxa 4131 (1), pp. 1-63 : 22-24

Typton carneus Holthuis, 1951

( Figure 16 )

Typton carneus Holthuis 1951: 162 [in part], pl. 51, figs. a, e, k, l.

Material examined. Brazil, Ceará: 1 female, MZUSP 28192, Cascavel, Praia da Caponga, rocky intertidal, in sponge Tedania ignis (Duchassaing & Michelotti) , coll. P. Pachelle & C. Licarião, 04.vi.2011 [fcn PP 11-005]; 2 females, LIMCE-UFC 689, same collection data [fcn PP 11-004].

Comparative material. Typton distinctus Chace, 1972 . Brazil, Rio de Janeiro: 1 female, MZUSP 31506, Arraial do Cabo, Praia do Forno, “Transect 1”, no further data.

Distribution. Western Atlantic: USA (western Florida), Bahamas, Cuba (Los Arroyos), Mexico ( Bahía de la Ascensión), Haiti ( Tortuga), Barbuda, Tobago and Brazil (Fernando de Noronha, Ceará, Paraíba, Pernambuco) ( Vieira et al. 2012; present study).

Remarks. Typton carneus appears to be most closely related to another western Atlantic species, T. distinctus Chace, 1972 ( Figure 17 ). The latter species is known from two other Brazilian states, Pernambuco and Rio de Janeiro ( Pachelle et al. 2015), but has not yet been found in Ceará. The distinguishing characters between the two species involve the shape of the rostrum and second pereiopod carpus, as well as the orientation of the major cheliped dactylus ( Chace 1972; Pachelle et al. 2015). These differences, discussed in Pachelle et al. (2015), are illustrated in Fig. 16 ( T. carneus ) and Fig. 17 ( T. distinctus ) to enable an easier identification of the Brazilian material.

Figures

FIGURE 16. Typton carneus Holthuis, 1951: female from Cascavel, Ceará, Brazil (MZUSP 28192); A, frontal region, lateral view; B, right (major) second cheliped, lateral view; C, same, fingers, mesial view; D, same, dorsal view; E, left (minor) second cheliped, lateral view; F, same, fingers, mesial view.

FIGURE 17. Typton distinctus Chace, 1972: female from Arraial do Cabo, Rio de Janeiro, Brazil (MZUSP 31506); A, frontal region, lateral view; B, right (major) second cheliped, lateral view; C, same, fingers, mesial view; D, same, dorsal view; E, left (minor) second cheliped, lateral view; F, same, fingers, mesial view.