''Leptuca crenulata'', the Mexican fiddler crab, is a species of American broad-front fiddler crab in the family Ocypodidae. ''Leptuca crenulata'' was formerly in the genus ''

Uca The fiddler crab or calling crab may be any of more than one hundred species of semiterrestrial marine crabs in the family Ocypodidae, well known for their sexually dimorphic claws; the males' major claw is much larger than the minor claw, whil ...

'', but in 2016 it was placed in the genus '' Leptuca'', a former subgenus of ''Uca''.

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