Medicinal Plant Pests Rosa sinensis

Scientific name Parallelia arctotaenia Guenee Lepidoptera, Noctuidae. Alias ​​rose bridge insects, castor brown moth. Distributed in Shandong, Hebei, Jiangsu, Shanghai, Zhejiang, Anhui, Jiangxi, Shaanxi, Sichuan, Guizhou and other provinces.

Host Roses, Roses, Potholders, Pomegranates, Citrus, Potatoes, Ramie, Ten Sisters, Dahlias, Euonymus japonicus, etc.

The damage characteristics of the larvae into the nicks or holes, but also harm the buds and petals.

Morphological characteristics Adult body length 18-20mm, wingspan 43-46mm, body brown. The forewings are brownish, with a middle white band in the middle of the wings, and brownish brown spots on both ends of the middle band; a white line extending outward from the leading edge at the top corners, outwardly inclined to the first midline. The hind wings are brown with white middle bands. Oval, 0.7 mm in diameter, yellowish white. Larvae body length 40-49mm, dark brown, brown and brown irregular markings, abdomen 1 section back with yellow and white small eye spots 1 pair, section 8 back with black spots l pairs, the first pair of gastropod small, hip foot developed. It is 20mm long, reddish-brown and has a purple-gray wax powder. There are most ridges in the tail section.

Living habits 3 generations old in East China and wintering in the earth. In late April and early May of the following year, they were eclosioned. Most of them were bred at night. The eggs were laid on the back of the leaves, 1 leaf was 1 seed, generally there was 1 larva of 1 rose, 1 month of larval period, and 10 days of flood season. In early June, adult larvae emerged on the first generation, and larvae were mostly on the branches or on the back of the leaves, mimicking branchlets. Old mature larvae enter the soil and phlegm.

Control methods (1) Use black light to trap adult insects and catch larvae. (2) Spray 80% of dichlorvos EC 10oo times or 2.5% deltamethrin EC 3000 times and 20% fenvalerate EC 3000 times.

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