Rapeseed

The scientific name Entomoscelis adonidis Pallas synonym Chrysomela adonidis Pall. Coleoptera, Lepidoptera. Distribution Xinjiang, Russia.

Host rape, turnip, radish, cabbage, cabbage and so on.

The larvae harmed the characteristics of larvae such as rapeseed crucifer seedlings. Adult insects damage rapeseed leaves, flowers and pods.

Morphological characteristics Adult body length 10mm, width 6mm, body round, back brown or reddish brown; front of the head, the middle of the pronotum, small scutellum, coleoptera, suture, body ventral, foot full paint black; middle of the head There were 1 small dark spot on each side of the front chest, 1 long spindle-shaped black spot in each middle of the elytra, accounting for l/3 of the wing surface. The top of the head is slightly engraved and bright, and the second quarter of the antennae is nearly spherical. The third to fifth sections are longer, and the remaining sections are thick and short. The thoracodorsal plate is arched with arcuate sides and small scutellum semicircular with a few moments. The engraved edge of the elytra is slightly thicker than the chest, and the surface is wrinkled.

Living habits One generation in Xinjiang, the wintering of eggs or larvae on the topsoil, and the feeding of weeds after the hatching of the larvae of the spring and winter larvae, followed by damage to the leaves of Brassica juncea and Brassicaceae. After the larvae are matured, they are buried in the soil and the pupa period is 15-20 days. In late May the adult began to emerge; after the emergence of the behavioral damage, into the June-July hot and dry season when the soil into the summer, from August to September unearthed continue to harm, copulation spawning, eggs scattered or block.

See black-seed Rape Leaf A for control methods.

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