Leptuca batuenta, commonly known as the beating fiddler crab, is a species of fiddler crab native to the tropical eastern Pacific, from El Salvador to northern Peru.

[1] Previously a member of the genus Uca, the species was transferred in 2016 to the genus Leptuca when Leptuca was promoted from subgenus to genus level.

[2][3] This crab is very small; carapace width is approximately 7 millimetres (0.28 in) in adult males and 5 millimetres (0.20 in) in adult females.

[1] Both sexes have a pale brown to yellow carapace with some white marbling.

[1] The species can be found on open mudflats and among unshaded mangrove roots.