Quite uncommon species, except the islands of Koh Samui and Koh Phangan, where is more easy to spot it. For some time the female of this species were considered a different species, named Hasora maevis and quite rare. Only after a study of first stages and DNA has been determined that actually Hasora maevis was the female of Hasora leucospila, that is sexual dimorphic.

Reference:
Xue G, Ikari E, Inayoshi Y, Li M
Hasora mavis Evans, 1934 syn. n. is confirmed to be the female of H. leucospila leucospila (Mabille, 1891) (Hesperiidae, Coeliadinae) by DNA barcoding.