Leptuca speciosa
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Ocypodidae
Subfamily: Gelasiminae
Tribe: Minucini
Genus: Leptuca
Species:
L. speciosa
Binomial name
Leptuca speciosa
(Ives, 1891)

Leptuca speciosa, commonly known as the brilliant fiddler crab or the longfinger fiddler crab, is a species of fiddler crab native to the southern United States, Mexico, and the Caribbean.[1]

Before 2016, the species was known as Uca speciosa. In 2016, the subgenus Leptuca was promoted to the genus level.[2][3]

Description

The carapace can be up to 15mm wide.[4] The large claw of the male is long and whitish, with the carpus lacking a distinct tubercle on the inner margin. Specimens from the Florida Keys are typically smaller than specimens from the northern Gulf.

Distribution

In the United States, the crabs are present along the coast of Florida and on the outer islands of Alabama and Mississippi.[1][4] The crabs are also present on the Yucatan Peninsula in Mexico, a few islands in the Bahamas, and the western tip of Cuba.[1][5]

Habitat

The species lives in brackish water on silt or silty sand substrata in intertidal marshes or mangrove thickets.[4]

Similar species

The range of the species rarely overlaps with the closely related L. spinicarpa, which frequents lower salinity habitat.[4] Formerly, L. spinicarpa was described as a subspecies of L. speciosa.[4]

References

  1. 1 2 3 Hopkins, Melanie J.; Thurman, Carl L. (2010). "The geographic structure of morphological variation in eight species of fiddler crabs (Ocypodidae: genus Uca) from the eastern United States and Mexico". Biological Journal of the Linnean Society. 100 (1): 248–270. doi:10.1111/j.1095-8312.2010.01402.x. S2CID 82678219.
  2. ↑ Shih, Hsi-Te; Ng, Peter K. L.; Davie, Peter J. F.; Schubart, Christoph D.; et al. (2016). "Systematics of the family Ocypodidae Rafinesque, 1815 (Crustacea: Brachyura), based on phylogenetic relationships, with a reorganization of subfamily rankings and a review of the taxonomic status of Uca Leach, 1814, sensu lato and its subgenera". The Raffles Bulletin of Zoology. 64.
  3. ↑ Rosenberg, Michael S. (2019). "A fresh look at the biodiversity lexicon for fiddler crabs (Decapoda: Brachyura: Ocypodidae). Part 1: Taxonomy". Journal of Crustacean Biology. 39 (6).
  4. 1 2 3 4 5 Heard, Richard W. (1982). "Guide to common tidal marsh invertebrates of the northeastern Gulf of Mexico". MASGP-79-004. NOAA, Office of Sea Grant.
  5. ↑ Rosenberg, Michael S. (2020). "A fresh look at the biodiversity lexicon for fiddler crabs (Decapoda: Brachyura: Ocypodidae). Part 2: Biogeography". Journal of Crustacean Biology. 40 (4): 364–383. doi:10.1093/jcbiol/ruaa029.
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