About Euphaea masoni Selys, 1879
Euphaea masoni Selys, 1879 is a species with distinct physical differences between males and females. Males are almost entirely black, including their wings. Females have wings that are lighter in color than the wings of males. This species is primarily distributed across Southeast Asia, with confirmed locations including southern China, India, Laos, Myanmar, Thailand, and Vietnam. Ecologically, Euphaea masoni occurs near streams. Phoretic relationships between larvae of the chironomid midge Nanocladius asiaticus (a member of the order Diptera) and Euphaea masoni have been documented.
