OpistoclanisOpistoclanis is a genus of moths in the family Sphingidae, containing only one species Opistoclanis hawkeri.Distributionwhich is known from Yunnan in China, north-eastern Thailand, Laos and northern Vietnam, where it has been recorded at elevations between 888 and 2,800 meters.BiologyAdults are on wing from late March to early May at the end of the dry season in Thailand.