Cotton Crest Diamond Diamond

Scientific name Earias fabia (Stoll) Lepidoptera, Noctuidae. It is mainly distributed in the Yangtze River Basin and South China Cotton Area.

Host, damage characteristics with Ding point Diamond.

Morphological characteristics Adult body length 9-13mm, wingspan 26-26mm, front thoracodorsal grass green, middle with l white vertical stripes, fore-wing paddle, front and rear edge was a wide strip of white strips, during which formed a narrow triangle, grass green. Eggs are fish-shaped, blue in the first days, with a pattern, and the inner surface of the egg is a circle of finger-like protrusions, which is more slender than Diamond Diamond. Near the time of hatching, the center of the egg and the upper part of the egg have black circles at the l/3, and the rest is greyish green. Larvae body length 12-15mm, auburn, with wax. Abdominal lobes l, 7 and 8 each have 4 stings, and there is no white small convex thorn below the abdomen, and the lip base is dark brown. The dragonfly is 8-10.5mm long, auburn, with 2-3 projections on both sides of the anus.

Living habits Hubei four generations, a few five generations, Jiangxi, Hunan 5-6 generation, Yunnan Kaiyuan 8-9 generation, Guangzhou 9-10 generations, Yunnan Yuanjiang and Hainan Province 10-11 generations. The worm is in the cotton area north of the Yangtze River. No insects can live over winter. The source of insects is mainly from the field. There is no apparent dormancy in the south. For other habits and prevention methods, see Dingdian Diamond Diamond.

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