Scientific name Luehdorfia chinensis Leech Lepidoptera, Papilionidae. Distribution Jilin, Liaoning, Heilongjiang, Jiangsu, Zhejiang, Anhui, Hubei, Hunan, Shaanxi, Sichuan and other provinces. Hosts Asarum, Du Heng and other medicinal plants. The larvae of newly hatched larvae feed on the back of the leaves, leaving the epidermis and veins, and the leaves of the newly hatched larvae become nicks after the third instar. Life habits Jilin, Zhejiang, born in the l generation, to the winter in the stone joints, the base of the trunk, under the dead leaves. Feathering occurs in Zhejiang in mid-March, and mating spawning occurs one or two days after emergence. Female adults live 22–25 days and male adults 17–20 days. The egg period is 20 to 25 days. The larvae hatch in late March and mid-April. Larvae 35-40 days, in May on the middle of phlegm. Jilin wintering crickets emerged in mid-April, larvae hatched in early June, and in late June and early July phlegm. Adults lay their eggs on the back of the leaves, with 20 eggs per egg and tiled eggs. Each female can produce 130 eggs during her lifetime. The newly hatched larvae clustered on the back of the larvae to feed on the 4th and 5th instars. The 5th instar larvae can eat 18-22 cm2 of Duheng leaves every day. Larvae have a feign death. Control methods (1) The worm has a cluster and can capture larvae manually. (2) Spray 50% dichlorvos EC 1000 times. Hydrolyzed Sponge White Powder Sponge Chengdu Sino Tech company , https://www.cnherbfun.cn
Morphological characteristics Adult body length 13-18mm, wingspan 43-63mm, body black and yellow. The forewing near the base has a wide yellow transverse streak, with two "Y"-shaped yellow lines in the middle, and a short cone-shaped pattern between the outer "Y" yellow lines and the outer edges. There are 3 yellow lines in the hind wings extending from the leading edge to the hip angle and gradually merge into one; the outer edges of the wings have black wavy lines, the wavy lines have 4 meniscus-shaped maculas, and the macular spots have 4-5 round blue spots. There are 5 bright red spots inward. The eggs are nearly spherical and slightly yellowish in color. The last instar larvae have a body length of about 30mm and are purple-black. There are black bristles on the head, and there are 6 dark bristly plexuses in the deep section of the chest and on the abdomen. There are 1-2 white long hairs in each bristly plexus. About 15mm in length, there are 4 protrusions on the back of the head.