Ophryophryne pachyproctus Kou, 1985

Class: Amphibia > Order: Anura > Family: Megophryidae > Subfamily: Megophryinae > Genus: Ophryophryne > Species: Ophryophryne pachyproctus

Ophryophryne pachyproctus Kou, 1985, Acta Herpetol. Sinica, Chengdu, N.S.,, 4 (1): 41. Holotype: YU A8311032, by original designation. Type locality: "Zhushihe, Mengla County, Yunnan Province, alt. 1000 m", China.

Megophrys (Ophryophryne) pachyproctusYang, 1991, Amph. Fauna of Yunnan: 66.

Megophrys (Ophryophryne) koui Mahony, Foley, Biju, and Teeling, 2017, Mol. Biol. Evol., 34: 755. Replacement name for Ophryophryne pachyproctus Kou, 1985, a secondary homonym of Megophrys pachyproctus Huang, 1981, when both in Megophrys

Ophryophryne pachyproctus — Lyu, Zeng, Wang, Liu, Huang, Li, and Wang, 2021, Zootaxa, 4927: 40.

English Names

Zhushihe Mountain Toad (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 86).

Mengla Narrow-mouthed Horned Toad (Fei, 1999, Atlas Amph. China: 124).

Mountain Toad (Nguyen, Ho, and Nguyen, 2005, Checklist Amph. Rept. Vietnam: 15).

Yunnan Mountain Toad (Poyarkov, Nguyen, Popov, Geissler, Pawangkhanant, Neang, Suwannapoom, and Orlov, 2021, Russ. J. Herpetol., 28 (3A): 35). 


Region of the type locality in Yunnan, southwestern China and northern Vietnam (Nghe An and Ha Tinh provinces), northern Thailand (Chiang Mai and Nan) and reported in northern (Louangphabang Province) and eastern Laos.

Geographic Occurrence

Natural Resident: China, People's Republic of, Laos, Thailand, Vietnam


If (following Dubois, 1980, Bull. Mens. Soc. Linn. Lyon, 49: 469–482) Ophryophryne is considered a subgenus of Megophrys, Ophryophryne pachyproctus Kuo, 1985, becomes a secondary homonym of Megophrys pachyproctus Huang, 1981. Closely related to Ophryophryne microstoma according to the original publication. See accounts by Yang, 1991, Amph. Fauna of Yunnan: 66–67; Ye, Fei, and Hu, 1993, Rare and Economic Amph. China: 178; and Fei, 1999, Atlas Amph. China: 124–125. See comments by Inger, Orlov, and Darevsky, 1999, Fieldiana, Zool., N.S., 92: 8–9. Secondary homonym of Megophrys pachyproctus Huang, 1985, when in Megophrys. Orlov, Murphy, Ananjeva, Ryabov, and Ho, 2002, Russ. J. Herpetol., 9: 84, noted reports of this species in Laos. Chan-ard, 2003, Photograph. Guide Amph. Thailand: 86–87, provided a very brief account (as Ophryophryne microstoma), map for Thailand, and photograph. See account by Ohler, 2003, Alytes, 21: 34–39, who did not report this species from Laos. Nguyen, Ho, and Nguyen, 2005, Checklist Amph. Rept. Vietnam: 16, provided specific localities for Vietnam. Bain, Nguyen, and Doan, 2007, Herpetol. Rev., 38: 111, provided a record for Ha Tinh Province, Vietnam, and briefly discussed the range. Fei, Hu, Ye, and Huang, 2009, Fauna Sinica, Amph. 2: 477–481, provided an account for China and spot map. Fei, Ye, and Jiang, 2010, Colored Atlas of Chinese Amph.: 217, provided a brief account including photographs. Chan-ard, Cota, and Makchai, 2011, Amph. E. Region Thailand: 126, detailed the range (as Ophryophryne microstoma) in Thailand. Fei, Ye, and Jiang, 2012, Colored Atlas Chinese Amph. Distr.: 246, provided an account, photographs, and a range map for China. Fei and Ye, 2016, Amph. China, 1: 735–737, provided an account, photograph, and dot map, as Ophryophryne pachyproctus. Poyarkov, Duong, Orlov, Gogoleva, Vassilieva, Nguyen, Nguyen, Nguyen, Che, and Mahony, 2017, ZooKeys, 672: 49–120, provided comparative morphological information. Niyomwan, Srisom, and Pawangkhanant, 2019, Field Guide Amph. Thailand: 148–149, provided a brief account (as Megophrys koui, photographs, habitat, and range) for Thailand (in Thai). Nguyen, Brakels, Maury, Sudavanh, Pawangkhanant, Idiiatullina, Lorphengsy, Inkhavilay, Suwannapoom, and Poyarkov, 2020, Amph. Rept. Conserv., 14 (2: e248): 218–249, discussed the range and provided records from Vientiane, Xaignabouli and Xaisomboun Provinces, Laos.

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