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Mongolia Gray as
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No. 1
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Containing Phrases
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No. 1
体长7毫米左右,灰褐色。头管较短,表面有一纵沟。翅鞘略呈卵形,末端稍尖,表面密生黄褐色茸毛,有褐色毛块,形成不规则的斑纹,并有十条刻点。
在辽宁省两年一代,以成虫及幼虫在土中过冬。4月中旬前后,越冬成虫开始出土活动,以6月中旬为最多。成虫多在晴天10时前后大量出现,寻觅食物,早晨和阴天出来活动较少。成虫有假死习性,产卵于表土中。 5月下旬幼虫开始孵化, 9月末幼虫做成土窝过冬。次年继续在土中取食,至6月中旬开始化蛹, 7月上旬开始羽化成虫,这些成虫当年不出土,等到第三年4月份才出土为害。
Containing Phrases
Mongolia Gray weevil