Xenophrys monticola
Range
West Bengal and Sikkim (India) and Nepal; possibly Bhutan
Xenophrys monticola is a frog of the family Megophryidae described by Albert Gunther in 1864, with Megophrys katabhako and Megophrys sanu, both named in 2017, as synonyms. It is found in West Bengal and Sikkim in India and in Nepal, and possibly in Bhutan (Wikipedia, general species account).
The source is a stub and gives no size, appearance, habitat or breeding detail (Wikipedia, general species account).