Leptolalax is a genus of frogs 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.
Leptobrachella arayai is a species of frog in the family Megophryidae. It is endemic to Sabah, Malaysia. In addition to its type locality, Mount Kinabalu, it is known from Mount Trusmadi, Crocker Range, and Mendolog. Its natural habitats are tropical moist lowland forests, moist montane forests, and rivers. It is threatened by habitat loss.
Leptolalax dringi is a frog species in the family Megophryidae. It is endemic to Borneo and found in Kalimantan (Indonesia) and in Sarawak and Sabah (Malaysia). Its type locality is Mount Mulu in Gunung Mulu National Park. Its natural habitats are tropical moist lowland forests, moist montane forests, and rivers. It is becoming rare due to habitat loss.
Leptolalax gracilis is a frog species in the family Megophryidae. It is endemic to northern Borneo: Brunei, Kalimantan (Indonesia), and Sarawak (Malaysia). Earlier record from the Malay Peninsula and Thailand refer to other species. Its natural habitats are tropical moist lowland forests, moist montane forests, and rivers. It is becoming rare due to habitat loss.
Leptolalax hamidi is a frog species in the family Megophryidae. It is endemic to Borneo, where it can be found both in western Sarawak, Malaysia, and Kalimantan, Indonesia. Its natural habitats are tropical moist lowland hilly forests and rivers. It is threatened by habitat loss (logging).
Leptolalax heteropus is a frog species in the family Megophryidae. It is found in the Malay Peninsula, both in Malaysia and southern Thailand. The type locality is Maxwell Hill in Taiping, Perak, Malaysia. Its natural habitats are tropical moist lowland forests, moist montane forests, and rivers. It is not considered threatened by the IUCN.
Leptobrachella liui, also known as Fujian Asian toad or Fujian metacarpal-tubercled toad, is a frog species in the family Megophryidae. Originally described from Chong'an in Fujian, it is now known to be widely distributed in southern and southeastern China from Zhejiang and Fujian west to Guizhou and Guangxi.
Leptolalax nahangensis is a frog species in the family Megophryidae. It is endemic to Tuyên Quang Province, northern Vietnam. Its natural habitats are subtropical moist lowland forests, rivers, and caves. Its status is insufficiently known. This species has only been found near the entrance to a cave in Na Hang Nature Reserve.
Leptolalax pelodytoides is a frog species in the family Megophryidae. It is known with reasonable certainty only from near its type locality, the Karen Hills region in the Kayah State, eastern Myanmar. As Leptolalax pelodytoides was one of the first megophryid species to be described from the region, later research has shown that many specimens that have been reported as L. pelodytoides represent other species, including Leptolalax bourreti, Leptolalax oshanensis, Leptolalax eos, and Leptolalax minimus. A consequence is that the most recent IUCN assessment reports much broader distribution for this species than what can be ascertained.
Leptolalax pluvialis is a frog species in the family Megophryidae. It is only known from its type locality, Fansipan mountain range in northern Vietnam, although it is expected to be found also in adjacent Yunnan, China. Its natural habitats are subtropical moist montane forests and rivers. Its status is insufficiently known.
Leptolalax sungi is a frog species in the family Megophryidae. It is found in Vĩnh Phúc and Lào Cai Provinces in northern Vietnam and in Guangxi in southern China. Its natural habitats are subtropical moist lowland forests, moist montane forests, and rivers. Its status is insufficiently known. This species was first found along a stream near Tam Đảo village, about 925 meters ASL.
Leptobrachella tuberosa, also known as the granular toad, is a species of frog in the family Megophryidae. As currently known, it is endemic to the Central Highlands of Vietnam in Gia Lai, Quảng Nam, and Thừa Thiên–Huế Provinces. Its true range is probably wider as suitable habitat extends further north and east, reaching northeastern Cambodia and southeastern Laos. The specific name tuberosa is derived from the Latin tuberosus, meaning "full of protuberances".
Leptolalax ventripunctatus is a frog species in the family Megophryidae. It is known from Mengla County in Yunnan, southern China, from Phongsaly Province in northern Laos, and from Tam Dao in northern Vietnam. Its natural habitats are subtropical moist lowland forests and rivers. Its status is insufficiently known.
The Kuatun horned toad, or Kuatun spadefoot toad, is a species of frog in the family Megophryidae. It is found in southeastern China and northern Vietnam. Its name is testimony to its type locality, Kuatun village in Wuyishan, Fujian.
The rough-skinned horned toad or Tonkin spadefoot toad is a species of frog in the family Megophryidae. It is found in southern China, northern Vietnam, and northern Laos.
Philautus kempii is a species of frog in the family Rhacophoridae. It is known with certainty from its type locality, Upper Rotung in Arunachal Pradesh, Northeast India, in the area also claimed by China. It is also reported from Arunachal Pradesh in general as well as from extreme eastern Tibet; these might represent another species. Very little is known about this species, and even its taxonomic validity remains uncertain.
Leptobrachella aerea is a species of frogs in the family Megophryidae. It is known from Vilabouli District, Savannakhet Province, Laos and from Hà Tĩnh, Nghệ An, Thanh Hóa, and Quảng Bình Provinces of Vietnam.
Leptolalax eos, also known as the Rosy Litter Frog, is a species of frog in the family Megophryidae. It is known in Bo Kluea District in northern Thailand; Phongsaly, Bolikhamxay, Oudomxai and Xaisomboun Provinces in Laos; Dien Bien, Thanh Hoa and Son La Provinces in northwestern Vietnam, and Yunnan, China. It was previously confused with Leptolalax bourreti.
Leptobrachella lateralis is a species of frog in the family Megophryidae. It was first described by John Anderson (1871), who originally named it Ixalus lateralis. The holotype is lost and its exact origins are uncertain, but it was likely collected "from some portion of the surrounding region [of Bhamò]", Myanmar. It is only known with confidence from the region of its type locality and from Nagaland in Northeast India. Its range might extend into Yunnan, China. It is sometimes called Nagaland Asian toad or Nagaland leaf litter toad.
Quasipaa acanthophora is a species of frog in the family Dicroglossidae. It is endemic to northern Vietnam and know from two locations, its type locality Mau Son in the Lang Son Province, and the Tay Yen Tu Nature Reserve in the Bac Giang Province. It is a sibling species of Quasipaa spinosa.
