50, see text Leptolalax is a genus of frogs (order Anura) in the family Megophryidae.

They are sometimes known as Asian toads, metacarpal-tubercled toads, or slender litter frogs, although many species-specific common names do not follow these conventions, and many species do not have common names.

They are widely distributed in southeastern and eastern Asia, from southern China and northeastern India to the Malay Peninsula and Borneo.

[1] Leptolalax are typically small and have a cryptic colour pattern and no obvious morphological characters useful in systematic studies.

Consequently, both molecular genetic analyses and analysis of advertisement calls by male frogs have been important in identifying new species.