Typton vulcanus Holthuis, 1951

PACHELLE, PAULO P. G., ANKER, ARTHUR & TAVARES, MARCOS, 2015, NEW AND ADDITIONAL RECORDS OF THE SPONGE SHRIMP GENUS TYPTON COSTA, 1844 (DECAPODA: PALAEMONIDAE) FROM THE BRAZILIAN COAST, Papéis Avulsos de Zoologia (São Paulo) 55 (22), pp. 317-322 : 321

Typton vulcanus Holthuis, 1951

( Fig. 2 )

Typton vulcanus Holthuis, 1951: 157 , pl. 49, figs. a-n; Holthuis, 1952: 19; Chace, 1972: 52; Abele & Kim, 1986: 17, 189, figs. a-c; Camp, 1998: 140; Duris et al., 2009: 1056.

Material examined: 1 male (cl 2.6 mm), MZUSP 31144 , Brazil, Bahia, Baía de Todos os Santos, Porto da Barra , sta. MT2 DA3, 13°00’05”S, 38°32’01”W, associated with Callyspongia sp., depth 4-6 m, coll. C. Menegola & L. Martins, 20.xi.2012; 1 ovigerous female (cl 3.2 mm), MZUSP 29180 , same collection data .

Description: For original description and figures see Holthuis (1951); the male specimen from Bahia is illustrated in Fig. 2 .

Distribution: Western Atlantic: USA (Florida), Mexico (Gulf of Mexico), Colombia (Cape la Vela), Brazil (Bahia) (Holthuis, 1951; Camp, 1998; Duris et al., 2009; present study).

Remarks: The present material represents the first record of occurrence of Typton vulcanus in the south- western Atlantic. The Brazilian material agrees well with Holthuis’ (1951) description and figures of T. vulcanus , although differing in presenting a conspicuous longitudinal depression on the dorsal surface of the major chela ( Fig. 2g ), a character not mentioned nor illustrated by Holthuis (1951). The importance of this character for species differentiation is yet to be determined by a direct comparison between the Brazilian and Caribbean-Florida materials.

Figures

FIGURE 2: Typton vulcanus Holthuis, 1951: male (cl 2.6 mm), MZUSP 31144, from Baía de Todos os Santos, Bahia, Brazil, a: frontal region, dorsal; b: same, lateral; c: sixth abdominal somite, dorsal; d: telson, dorsal; e: third maxilliped, lateral; f: first cheliped, lateral; g: major second cheliped, lateral; h: same, distal merus, carpus and chela, mesial; i: minor second cheliped, lateral; j: same, distal merus, carpus and chela, mesial; k: third pereiopod, lateral; l: same, distal propodus and dactylus, lateral; m: uropod, dorsal.