''Leptuca crenulata'', commonly known as the Mexican fiddler crab, is a species of American broad-front fiddler crab in the family

Ocypodidae The Ocypodidae is a family of semiterrestrial crabs that includes ghost crabs and fiddler crabs. These crabs are found along tropical and temperate shorelines worldwide. Some genera previously classified within the Ocypodidae family have been r ...

. ''Leptuca crenulata'' was formerly placed in the genus ''

Uca The fiddler crab or calling crab can be one of the hundred species of semiterrestrial marine crabs in the family Ocypodidae. These crabs are well known for their extreme sexual dimorphism, where the male crabs have a major claw significantly lar ...

'', but in 2016 it was transferred to the genus ''

Leptuca ''Leptuca'' is a genus of fiddler crabs belonging to the family Ocypodidae. The species of this genus are found on the coasts of the Americas. Description They are small- to large-sized crabs with an adult carapace width of 5–25 mm in adu ...

'', a former subgenus of ''Uca''.

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