鳞翅目昆虫成虫翅斑多样型的新发现——变色夜蛾(Enmonodia vespertilio Fabricius)形态特征及生物学特性

New Discovery of the Type of Wing Spots of Lepidoptera Imagoes——Study on the Morphological and Biological Characteristics of Enmonodia vesperticio Fabricius

变色夜蛾幼虫主要危害观赏树木合欢，其成虫颜色有浅有深，前翅有黑棕色斑点1～5个，同一数量的斑点有斑点分离型、斑点愈合型、斑点镶嵌型和白斑镶嵌型的变化。经研究发现有41种斑点排列，有的成虫左右翅斑点排列也不一样，这在鳞翅目昆虫中实属罕见。该虫在河北冀东地区一年发生两代。以蛹越冬，蛹期269d。翌年6月上旬为羽化盛期，6月～7月产第1代卵，6月中旬～7月下旬幼虫作害。幼虫经7龄，第1代蛹期15～17d，7月下旬出现成虫，7月下旬～9月上旬产卵，7月中旬～8月中旬幼虫作害，9月上旬陆续化蛹越冬。

larva of Enmonodia （Fabicius） damaged albizziav trees. Adult E. vespertilio are of different colors. There are one to five black flecks in the front wing. These flecks have sporadic, flaky, or inlaid figures. The research found 41 fleck styles. Some adults have different flecks between left wing and right wing. This phenomenon was rare in Lepidoptera. This insect has two generations in one year in Hebei province. Enmonodia vespertilio live through the winter for 269 days in the form of pupa. The adults will eclose in June of the following year. The adult lay eggs for the first generation in June or July. The larvae will start to damage in the middle of June. The larvae have seven instars. Pupal period is 15 - 17 days. The larval period of the second generation is from the middle of July to the end of August. Pupa will spend the winter from the end of September.