Cyclograpsus integer H. Milne Edwards, 1837

Parasram, Nadeshinie, Santana, William & Vallès, Henri, 2021, Updated checklist of semi-terrestrial and estuarine crabs (Crustacea: Decapoda: Brachyura) of Barbados, West Indies, Zootaxa 5052 (4), pp. 451-485 : 473-474

Cyclograpsus integer H. Milne Edwards, 1837

Fig. 14 A, B, C, D

Cyclograpsus integer H. Milne Edwards, 1837: 79 [type-locality: Brazil; type in MNHN].—Rathbun 1900: 18; 1918: 326, figs. 1 & 2, Pl. 97; 1933: 92, fig. 86. Hartnoll 1965: 114, 115, 141, 143, 144. Griffin 1968: 243, fig. 4 h. Chace & Hobbs 1969: 173, figs. 55, 58 b–d. Keith 1985: 272, fig. 11 C. Melo 1996: 465, unnumbered figure. Coelho et al. 2008: 41 . Ng et al. 2008: 226.— García & Capote 2015: 19, fig. 9 c. Poupin 2018: 228, fig. 261. Mantelatto et al. 2020: 25 , fig. 8 A.

Cyclograpsus occidentalis A. Milne-Edwards, 1878: 228 [type-locality: Cape Verde Islands].

Cyclograpsus parvulus De Man, 1896: 350 .

Material examined. Barbados, Sherman’s St. Peter, rocky shore, 13̊ 16’67.5” N–59̊ 38’42.08” W, 2 ♂ CW: 10.4; 8.0 mm ( BLSZ 072 ) . Barbados, St. Peters Bay , St. Peter, rocky shore, 13̊ 16’67.5” N–59̊ 38’42.08” W, 1 ♀ (ovig), 1 ♀, 1 ♂ CW: 10.7; 9.5; 9.4 mm ( BLSZ 073 ) . Idem, 1 ♂ CW: 0.8 mm ( BLSZ 191 ; MZUSP 40919 ) .

Distribution. Cyclograpsus integer is found in the Western and Eastern Atlantic and Eastern Pacific. In the Western Atlantic: Bermuda, Florida, San Salvador Island, Cuba, Jamaica, Dominican Republic, Puerto Rico, St. Thomas, St. Martin, St. Croix, Dominica, Guadeloupe, Barbados (present study), Isla de Cubagua, Tortuga, Los Roques, and Brazil. In Eastern Atlantic: from Senegal to the Congo. In Eastern Pacific: China, Taiwan, and Pacific Islands ( Hartnoll 1965; Chace & Hobbs 1969; Ng 2006; Poupin 2018).

Distribution in Barbados. Cattlewash, St. Peter’s Bay, and Sherman’s [ Table 1 (Site #s: 5, 24 & 26)].

Habitat in Barbados. Rocky shores; under debris, fragmented coral rocks (diameter size: 4–20 cm), and cobble rocks (diameter size: 10–50 cm) in supralittoral zones ( Fig. 2A : C, D).

Ecological notes. Cyclograpsus integer was found along with the species Geograpsus lividus ; in most cases, they were collected under the same rock or debris. This species is active during the daytime. One female (ovig) was collected in March 2019.

Remarks. There are several morphological variations seen in the specimens of Cyclograpsus integer from the Western Atlantic and East Asia. These variations in morphology seem to indicate that there may be two forms of this species, the east Asian morphotype and the American morphotype. According to Ng (2006: 502) the Asian form differs from the American form by having a very convex anterolateral margin, a distinctly converging posterolateral margin, distinct epigastric cristae, and ambulatory legs that are broad and stout. In the American form, the anterolateral margin is less convex, the posterolateral margin is subparallel, epigastric cristae are not distinct, and the ambulatory legs are slender and narrow. Cyclograpsus integer can be identified by the presence of alternating bands of short setae on the propodus and dactylus of walking legs; the third and fourth pereiopods are longer than others ( Griffin 1968).

Figures

FIGURE 2A. Semi-terrestrial and estuarine habitats of Barbados. A, B, Coastal Wetlands; C, D, Rocky Shores (Photos: N. Parasram).

FIGURE 14. Habitus of Cyclograpsus integer H. Milne Edwards, 1837 (BLSZ 073). A, B, dorsal view of male and female; C, D, ventral view of male and female. Scale bars: 20 mm.