The morphological characteristics of the chestnut-winged moth: (1) Adult: 15 to 21 mm in body length, resembling a wasp. The tentacles are tapered at both ends. The base half is orange, the end half is russet to black, the head, mid-thorax and back are yellow, the wings are transparent, and the veins and fringes are dark brown.
(2) Egg: light reddish brown, flat oval, 0.9 mm in diameter.
(3) Larvae: about 40 mm in length and white in color. The head is brown, the chest and back have brown inverted splay patterns, and the rump is brown.
(4) Pupa: 14-18 mm long, yellowish brown. There are two horizontal rows of short spines on the back of abdominal segments 4 to 7, the front row is larger than the back row, and there is only one row of thin spines on segments 8 to 10.