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Leptolalax
''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. ''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.〔
Two subgenera are recognized: ''Leptolalax'' and ''Lalos'' (the latter was first named as ''Lalax'', but the name was already occupied). ''Lalos'' has a more northern distribution and only includes species from the continental Asia, whereas ''Leptolalax'' includes all the species from Borneo (''Leptolalax arayai'', ''Leptolalax dringi'', ''Leptolalax fritinniens'',〔 ''Leptolalax gracilis'', ''Leptolalax hamidi'', ''Leptolalax maurus'', and ''Leptolalax pictus'') as well as few continental species (''Leptolalax croceus'', ''Leptolalax melicus'') and ''Leptolalax kajangensis'' from Tioman Island, at least provisionally.〔
Most ''Leptolalax'' species have been reported from very small areas and only a few species have large areas of occurrence. Whether this distinction is real or the widespread species represent cryptic species complexes remains to be confirmed.〔
==Species==
There are 40 species in the genus. New species are still being described, including three new ones in 2013 and one in 2014:〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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