Uca helleri (basionym) Leptuca helleri, commonly known as Heller's fiddler crab, is a species of fiddler crab endemic to the Galapagos Islands in the eastern Pacific Ocean.

[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] The carapace can be up to 12 mm wide in the largest male individuals.

[1]