Chirixalus simus Annandale, 1915

Class: Amphibia > Order: Anura > Family: Rhacophoridae > Subfamily: Rhacophorinae > Genus: Chirixalus > Species: Chirixalus simus

English Names

Assam Asian Treefrog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 111).

Annandale's Tree Frog (Das and Dutta, 1998, Hamadryad, 23: 66; Dinesh, Radhakrishnan, Gururaja, and Bhatta, 2009, Rec. Zool. Surv. India, Occas. Pap., 302: 90).

Annandale's Pigmy Tree Frog (Ahmed, Das, and Dutta, 2009, Amph. Rept. NE India: 46).

Assam Tree Frog (Rahman and Howlader, 2011, Herpetol. Rev., 42: 561).


Northeastern India (Assam, Mizoram, Tripura, and West Bengal) as well as in intervening Bangladesh (Chittagong and Moulvibazar District); reported from Zhemgang District, Bhutan.

Geographic Occurrence

Natural Resident: Bangladesh, Bhutan, India


See Deuti, Biswas, Ahmed, and Dutta, 2000, Hamadryad, 25: 215–217, for discussion of habits, distribution, and type locality. Chanda, 2002, Handb. Indian Amph.: 146–147, 216, and provided a brief account. Ahmed, Das, and Dutta, 2009, Amph. Rept. NE India: 46, provided a brief account for northeastern India. Das and Dutta, 2007, Hamadryad, 31: 154–181, noted no larval descriptions in the literature. Mathew and Sen, 2010, Pict. Guide Amph. NE India: 92, provided a brief characterization and a photograph. Hasan, Hossain, Kabir, and Hassan, 2010, Herpetol. Rev., 41: 506, provided a record for Bangladesh (Mymensingh Division) and commented on the range. Rahman and Howlader, 2011, Herpetol. Rev., 42: 561–562, provided a range extension in Bangladesh. Subba, Aravind, and Ravikanth, 2016, Check List, 13(1: 2033): 12, considered the presence of this species in Sikkim, India, to be doubtful. Purkayastha, Khan, and Roychoudhury, 2020, in Roy et al. (eds.), Socio-economic and Eco-biological Dimensions in Resource use and Conservation, Environmental Science and Engineering: 225–233, provided a record for Rowa Wildlife Sanctuary, Tripura, India. Wangyal, Bower, Sherub, Tshewang, Wangdi, Rinchen, Puntsho, Tashi, Koirala, Bhandari, Phuntsho, Koirala, Ghalley, Chaida, Tenzin, Powrel, Tshewang, Raika, Jamtsho, Kinley, Gyeltshen, Tashi, Nidup, Wangdi, Phuentsho, Norbu, Wangdi, Wangchuk, Tobgay, Dorji, and Das, 2020, Herpetol. Rev., 51: 793, identified a photograph as of this species from Bhutan. Raj, Vasudevan, Aggarwal, Dutta, Sahoo, Mahapatra, Sharma, Janani, Kar, and Dubois, 2023, Alytes, 39–40: 104–108, reported on larval morphology of specimens from West Bengal, India.

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