Leptuca cumulanta (Crane, 1943)
publication ID |
https://dx.doi.org/10.3897/zookeys.943.52773 |
publication LSID |
lsid:zoobank.org:pub:2E2EAD47-EC1A-49FC-AA9B-857C29E283D6 |
persistent identifier |
https://treatment.plazi.org/id/3946E2BD-B95C-5F11-99D5-3BA46903717E |
treatment provided by |
ZooKeys by Pensoft (2020-06-22 21:54:39, last updated 2024-11-30 03:38:11) |
scientific name |
Leptuca cumulanta (Crane, 1943) |
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Leptuca cumulanta (Crane, 1943) View in CoL Figures 9B View Figure 9 , 10A, B View Figure 10
Recognition characters.
Carapace semi-cylindrical, width ca. 1.6 times the length; strongly arched and dorsal surface without pile; lateral margins almost parallel (Fig. 10A View Figure 10 ). Dorso-lateral margins well marked and strongly converging posteriorly; single pair of postero-lateral striae clearly visible (Fig. 10A View Figure 10 , seta). The discrete pile on the carapace described by von Hagen (1987) was not observed in the specimens examined in the present study. Front triangular and moderately wide measuring from 25% to 29% of the front-orbital breadth. Manus of male major claw with dorso-lateral surface covered by tubercles except along the strong dorsal groove (mostly filled with dirt); smooth surface in the submarginal longitudinal area; dorsal surface with sparse tubercles while dorso-lateral one with small and dense tubercles; fingers ca. 1.7 times the manus length; pollex almost straight but dactyl strongly arched ending in a curved downward tip, forming a very wide gap (Fig. 10B View Figure 10 ). Ambulatory legs without pile. Male abdomen somites distinct (Fig. 9B View Figure 9 ). Small crabs, males’ CW up to 12.5 mm in a population from Caeté mangrove, Pará state, northern Brazil ( Koch et al. 2005).
Biological notes.
The species reproduces year-round in populations of northern Brazil and the crabs reach the largest CW among all other populations ( Koch et al. 2005). In the impacted mangroves, L. cumulanta is the fourth most abundant fiddler crab species, but crabs’ CW is the smallest among these populations ( Bedê et al. 2008). The species prefers muddy substrates ( Thurman et al. 2013). Hoods at the entrance of male burrows were observed in some populations in Venezuela and Curaçao, but there is no such record from populations of the Brazilian coast ( Crane 1975).
Remarks.
In sympatric area of Brazilian coast L. cumulanta can be confused with L. leptodactyla (from Pará to Rio de Janeiro) and L. uruguayensis (Rio de Janeiro state): they are similar in size and the major male claw is provided with a very curved dactyl forming a wide gap with the pollex. The best ways to distinguish these three species is described when referring to L. leptodactyla and L. uruguayensis (see below).
Bede, LM, Oshiro, LMY, Mendes, LMD, Silva, AA, 2008. Comparacao da estrutura populacional das especies de Uca (Crustacea: Decapoda: Ocypodidae) no Manguezal de Itacuruca, Rio de Janeiro, Brasil. Revista Brasileira de Zoologia 25 (4): 601 - 607, DOI: https://doi.org/10.1590/S0101-81752008000400004
Crane, J, 1975. Fiddler crabs of the world Ocypodidae: Genus Uca. Princeton University Press, Princeton
Koch, V, Wolff, M, Diele, K, 2005. Comparative population dynamics of four fiddler crabs (Ocypodidae genus Uca) from a north Brazilian mangrove ecosystem. Marine Ecology Progress Series 291: 177 - 188, DOI: https://doi.org/10.3354/meps291177
Thurman, CL, Faria, SC, McNamara, JC, 2013. The distribution of fiddler crabs (Uca) along the coast of Brazil: implications for biogeography of the western Atlantic coast. Marine Biodiversity Records 6: e1. https://doi.org/10.1017/S1755267212000942
von Hagen, H-O, 1987. Morphologie und Winkbalz einer neuen Uca -Art (Crustacea, Brachyura) aus dem Staat Espirito Santo (Brasilien). Mitteilungen aus den Hamburgischen Zoologischen Museum und Institut 84: 81 - 94
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Gelasiminae |
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