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.
Leptobrachium hendricksoni is a species of amphibian in the family Megophryidae. It is found in Malay Peninsula, Sarawak (Borneo), and Sumatra (Indonesia). Its natural habitats are tropical moist lowland forests, rivers, freshwater marshes, and nearby plantations and heavily degraded former forests. It is threatened by habitat loss.
Leptobrachium montanum is a species of frog from the family Megophryidae. It is endemic to Borneo and is, as currently defined, found in Kalimantan (Indonesia), Sabah and Sarawak (Malaysia), and Labi, Belait (Brunei). However, the nominal Leptobrachium montanum is a composed of more than one lineage. Available information mostly refers to this composite rather than the "true" Leptobrachium montanum. Common names montane large-eyed litter frog, mountain spadefoot toad, and mountain litter frog have been coined for it.
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 bourreti is a frog species in the family Megophryidae. It is known with certainty only from the vicinity of its type locality in Sa Pa in northern Vietnam. Earlier records from Laos refer to Leptolalax eos and those from Thailand probably to an unnamed species. Its natural habitats are subtropical moist lowland forests, moist montane forests, and rivers. Its status is insufficiently known.
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).
Leptobrachella kajangensis, also known as the Kajang slender litter frog, is a species of amphibian in the family Megophryidae. It is endemic to Malaysia and only known from its type locality, a small cave near the top of Gunung Kajang, on Tioman Island, a small island located 32 km off the east coast of Peninsular Malaysia.
Leptolalax maurus is a frog species in the family Megophryidae. It is endemic to Borneo where it is only known from its type locality, Mount Kinabalu in Sabah, Malaysia. Its natural habitats are tropical moist montane forests and rivers. It is becoming rare due to habitat loss.
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 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.
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.
Xenophrys aceras, commonly known as the Perak horned toad, Perak spadefoot toad or Malayan horned frog, is a species of frog in the family Megophryidae found in Peninsular Malaysia and Thailand, and possibly in Indonesia. Its common name refers to its type locality, Bukit Besar in Perak state, Malaysia.
Leptolalax kecil is a species of megophryid frogs found in the Cameron Highlands of Peninsular Malaysia. It is only known from its type locality, but it is expected to have a wider distribution in the Cameron Highlands. This species may have been erroneously identified as Leptolalax gracilis.
Leptolalax fuliginosus is a frog species in the family Megophryidae. It is endemic to Thailand where it is only known from its type locality, Pa Lao U in Prachuap Khiri Khan Province. Only four specimens were collected, all of them males, measuring 28–30 mm (1.1–1.2 in) in snout-vent length.
Leptolalax melanoleucus is a frog species in the family Megophryidae. It is endemic to Thailand, although it has a relatively wide distribution near the Burmese border from the Khlong Saeng Wildlife Sanctuary in the central peninsular Thailand northwards to the vicinity of Pilok in Thong Pha Phum District, southwestern mainland Thailand; it is expected to be found in Burma. The type collection consists of three males measuring 27–29 mm (1.1–1.1 in) in snout-vent length and a single female at 33 mm (1.3 in) SVL. Males can be found calling at night near small streams.
Leptolalax solus is a frog species in the family Megophryidae. It is endemic to Thailand where it is only known from its type locality, Hala Bala Wildlife Sanctuary in Narathiwat Province near the Malaysian border; it is likely that its range extends to Malaysia. The type collection consists of a single adult frog, which measured 28 mm (1.1 in) in snout-vent length.
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.
Leptobrachium masatakasatoi is a species of frog in the family Megophryidae. It is known from its type locality, Phu Pan in Houaphanh Province in northeastern Laos, and from Sơn La Province in northwestern Vietnam. The specific name masatakasatoi honors professor Masataka Sato, Japanese entomologist who collected the holotype. Common name Masatakasato’s eyebrow toad has been proposed for this frog.
