Decapoda - Brachyura - Inachoididae - Collodes

Collodes obesus ? A. Milne-Edwards, 1878

World Distribution
Florida Strait. 91-99 m. Perhaps also ?Lesser Antilles, ICA (Guadeloupe) 164–211 m

Environnement : Marine - Substrat/Association : Hard bottom (rock and rubbles)

Vertical range : Deep (more than 100 m) - Min-Max observed: 91-211 m

Lesser Antilles data
Distribution: Florida Strait. 91-99 m. Perhaps also ?Lesser Antilles, ICA (Guadeloupe) 164–211 m. WA.
Collodes ?obesus - Poupin & Corbari, 2016: in press, Guadeloupe (first record), Karubenthos II 2015, pre-det. D. Felder, J. Poupin, st. CP4595 or DW4595, 22 June 2015, 15°58.65'N, 61°21.95'W, 211-208 m, MNHN-IU-2013-19009; st. DW4596, 22 June 2015, 15°56.55'N, 61°21.76'W, 164-185 m, MNHN-IU-2013-19022.
Comment: Photographs were first identified as Collodes trispinosus but Collodes obesus was suggested by D. Felder (pers. com.) based on color pattern being totally different in C. trispinosus. On photographs examined the rostrum show similarities with C. obesus as illustrated in Rathbun (1925, text fig. 33). The basal antennal article is armed on its inner crest, as in C. obesus. Shape and armament of the carapace are also overall comparable to figures of C. obesus in Rathbun (1925, pl. 36, fig. 3-4, pl. 217, fig. 2-5) but there are only two slender, erect, capitate median spines (gastric and cardiac) and no intestinal spine while this one is present in C. obesus. This is perhaps in the range of intraspecific variations for this species.

Comment(s) on data
For Collodes trispinosus 'Comment' was: the determination is based on figures and descriptions in Rathbun (1925) and Williams (1984). The species was already recognized around Guadeloupe after Karubenthos 2012 (dredge at 66 m). Euprognatha rastellifera Stimpson, 1871 is also very close and already reported from Guadeloupe. It is however distinct by the presence of branchial spines on the carapace, absent in Collodes trispinosus.
Euprognatha rastellifera was also considered; det. based on Williams (1984, fig. 232 and fig. 233), check internantennular spine; branchial spines are absent; ambulatory legs with long setae (absent in E. rastellifera). Check internantennular spine on Karubenthos 2015 spp.

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database