Heterocarpus laevigatus Bate, 1888

Viana, Girlene Fábia Segundo, Ramos-Porto, Marilena, Torres, Maria Fernanda Abrantes & Santos, Maria Do Carmo Ferrão, 2007, Distribution of Heterocarpus laevigatus Bate, 1888 and Plesionika escatilis (Stimpson, 1860) along the Atlantic coast of South America (Crustacea: Caridea: Pandalidae), Zootaxa 1577 (1), pp. 33-39 : 35

Heterocarpus laevigatus Bate, 1888

( Figure 2 )

Heterocarpus laevigatus Bate, 1888 .; Rathbun, 1906: 918; Crosnier & Forest, 1973: 195, fig. 61c; Chace, 1985:33, fig.13i.

Description: Rostrum varying from less than 1¼ to more than 1½ times as long as carapace in juveniles to shorter than carapace in largest adults, without distinct lateral carina, armed dorsally with 6 – 10, usually 6 or 7 teeth on carapace and basal part of rostrum, including 5, less commonly 4 or 6, on carapace posterior to level of orbital margin and, infrequently, 1 situated directly above posterior margin of orbit, and ventrally with 6–13 teeth, most commonly 10 or 11; carapace with blunt but complete intermediate carina, anteriorly sharp and posteriorly indistinct lateral carina, short and obscure anterior antennal carina or buttress, and posterior submarginal carina; abdomen unarmed dorsally, rounded on 1 st and 2 nd somites, with blunt median ridge on 3 rd, 4 th, and 5 th somites and slightly sulcate median area on 6 th somite; antennal scale varying from little more than ½ as long as carapace in largest specimens to as much as 3/5 as long in smaller ones, blade and distolateral spine reaching approximately same level; pereopods with longer member of 2 nd pair having 20 or 21 (rarely 19 or 22) articles in carpus, shorter one with 6 or 7 (rarely 8), dactyl of 3 rd pair from about 1/7 to nearly ¼ as long as propodus, carpi of 3 posterior pairs armed with 1 (rarely 0 or 2) spines on 3 rd pair, 0 or 1 on 4 th pair, and 0 on 5 th pair, meri armed with 14–16 (rarely as few as 11 or as many as 21) spines on 3 rd pair, 6–19 (usually 12–14) on 4 th, and 5–8 (nearly always 7) on 5 th, ischia with 2 (rarely 1 or 3) spines on 3 rd and 4 th pairs and 0 on 5 th; maximum carapace length probably nearly 50 mm ( Chace, 1985).

Type-locality: Banda Sea off Kepulauan Banda, Indonesia ( Chace, 1985)

Material examined: Pernambuco: Cruise 4, station 1 (08°45’1’’S - 35°44’9’’ W), 500 m, one male (102 mm LT; 24,5 mm LC), 12/11/2000, DOPE / UFPE .

Distribution: Western and eastern tropical Atlantic; Indo-West pacific: Indian Ocean, New Caledonia, northwest Australia, Japan, Hawaii, French Polynesia ( Crosnier, 1988; Hanamura & Takeda, 1987; Poupin, 1996; Burukovsky, 1990). Brazil (Pernambuco, present contribution).

Habitat: Benthos, mud bottom, 6,7 o C; from 366 to 966 m depth ( Crosnier & Forest, 1973; Chace, 1985).

Figures

FIGURE 2. Lateral view of Heterocarpus laevigatus Bate, 1888, male, DOPE/UFPE. Scale bar = 1 cm.