Irungbam, J. S., & Norbu, L. (2020). A New Country Record of <i>Langia zenzeroides zenzeroides</i> Moore, 1872 (Sphingidae: Smerinthinae) From Bhutan. Journal of the Bombay Natural History Society (JBNHS), 116, 133–136. https://doi.org/10.17087/jbnhs/2019/v116/130270