Cyclograpsus integer H. Milne Edwards, 1837

In, First Published, 2022, Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean, Zootaxa 5146, pp. 1-129 : 104-105

Cyclograpsus integer H. Milne Edwards, 1837

( Figs. 54A–E )

Cyclograpsus integer H. Milne Edwards, 1837: 79 [Type locality: Brazil].

Trindade specimens. 1 male, 1 juvenile female ( MZUSP 42516 ), Trindade Island , M. Camargo coll., viii.2007, intertidal .

Size of largest male: cl 8.4 mm, cw 9.1 mm; largest female: cl 5.9 mm, cw 7 mm.

Comparative material examined. Brazil: São Paulo: 1 male, cl 11.8 mm, cw 15.4 mm ( MZUSP 39525 ), Ubatuba, at IOUSP Marine Station , M.D. Rodrigues coll., 9.iv.1986 , rocky shore. Santa Catarina: 1 male, 1 female ( MZUSP 13025 ), Praia de Bombas , J.H.B. Giraldi coll., 5.ii.1995 .

Distribution. Western Atlantic: Bermuda, eastern Florida, Gulf of Mexico, Antilles, Colombia, Venezuela and Brazil (Ceará to Rio Grande do Sul) ( Rodriguez 1980; Melo 1996; Souza 1999; Felder et al. 2009). Brazilian oceanic islands: Fernando de Noronha and Trindade ( Moreira 1920; Fausto Filho 1974). Eastern Atlantic: Cape Verde to Angola ( Manning & Holthuis 1981; González 2018). Indo-West Pacific: from East Africa to Polynesia ( Monod 1956; Manning & Holthuis 1981; Poupin 1994; Poupin et al. 2012).

42516). C–E, Male, cl 8.4 mm, cw 9.1 mm (MZUSP 42516). Scales: 2 mm. Photographs by P.A. Hernáez Bové.

Ecological notes. Intertidal on sandy-muddy bottoms under rocks ( Poupin 1994; Souza 1999); burrows in marshy marine areas near high tide, also among rocks and dead seaweed, and rocky reefs ( Rathbun 1918). Cyclograpsus integer ( Fig. 53A–E ) shelters under rocks or under mounds of algae during daylight hours ( Hartnoll 1965). The larval development is attained after five, often six zoeal stages in laboratory conditions (Gore & Scotto 1982). The temperature affects both duration and larval development. The megalopal stage is attained in 26 to 27 days from the zoeal stage V and 31 to 32 days from the zoeal stage VI (at 25°C), while at 20°C the megalopal stage is attained in 53 to 55 days from zoeal stage VI.

Remarks. Moreira (1920) reported on 5 males (largest cl 13 mm) and 7 females (smallest cl 8 mm) of Cyclograpsus integer collected in Trindade in 1916 ( Lobo 1919). So far as we can determine, for 91 years this species was never collected there again until 2007 (see above under material examined).

Figures

FIGURE 53. A–C, E, F, Plagusia depressa (Fabricius, 1775). A, B, Male, cl 33 mm, cw 37 mm (MZUSP 41244). C, Male, cl

FIGURE 54. A–E, Cyclograpsus integer H. Milne Edwards, 1837. A, B, Juvenile female, cl 5.9 mm, cw 7 mm (MZUSP