Nossa nelcinna is a moth in the family Epicopeiidae first described by Frederic Moore in 1875.[1] It is found in the north-western Himalayas[2] and China.
The wingspan is about 69 mm for males and 75 mm for females. Adults are greenish fuliginous (sooty) with black veins and a black longitudinal streak in the cell on the forewings. The spaces between the veins from the base to the disc of the forewings are greenish yellowish white and there is a transverse discal row of yellowish-white lunules, as well as a marginal row of small spots. The hindwings have yellowish-white spaces between the veins at the base. There is a discal transverse row of conical spots and a marginal row of quadrate spots.[3]