Yellow wide vegetable hop

Scientific name Phyl10treta hμmilis Weise Coleoptera, Phylidae. Alias ​​Huang Kuan jumps, vegetable dumplings, soil flea and so on. The distribution starts from Heilongjiang, Inner Mongolia and Xinjiang in the north, near the Yangtze River in the south, adjoins the former Soviet Union and North Korea in the east, ends in Yunnan in the southwest, and reaches Xinjiang in the west. There were many occurrences in Gansu, Ningxia and Qinghai. Often mixed with similar species of yellow caterpillars occur.

Host cruciferous vegetables such as cabbages and moorings, and harm to millet, barley, hemp, beets, etc.

The characteristics of adult insects See yellow leaf strips.

Morphological characteristics Adult body length 1.6-2.2mm, head, chest black, shiny, elytra cochlea and peripheral black, yellow stripes on each wing is very large, accounting for most of the elytra wings, leaving only the black edge, the central no bow bending, Its narrowest point is also more than 1/2 of its wing width. Forehead engraved more rare, smaller body size. The base of antennae is yellow or auburn.

Habits of life 3-4 generations, the adults in the leaves of fallen leaves, earth seams or weeds in the winter. Activities begin from April to May of the following year. The weather is sunny and active at high temperatures. The hot summer inhabits dormant in the back of the leaves or under the clods. It does not move sooner or later or on rainy days. The adult has a long life span, and the eggs are loosely distributed near the root of the plant or near the fine roots. Egg period 3-9 days. The larvae feed on the roots of the crops, and they mature in the soil after being cooked. The pupa period is 3 to 17 days.

Control methods (1) Agricultural control 1 Remove fallen leaves from the vegetable field, eradicate the weeds, eliminate the overwintering place and food base. 2 Deep tillage soil before sowing, resulting in an environment that is not conducive to larvae's life and the elimination of some earthworms. (2) Chemical control 90% crystal trichlorfon 1000 times or 50% phoxim EC 1000 times, 21% chlorpyrifos (increase effective cyanmar Emulsion) 4000 times, spraying in large area can prevent adults. The first two agents can also be used to irrigate and control larvae. For other methods, see Yellow Strokes.

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