2种竹小蜂的生物学特性

Biological characteristics of Aiolomorphus rhopaloides and Diomorus aiolomorphi

竹广肩小蜂和竹瘿长尾小蜂是竹瘿小蜂的优势种。研究表明竹广肩小蜂每年 1代 ,以蛹在虫瘿内越冬 ;成虫在 3月下旬至 4月下旬出瘿 ;幼虫 5龄 ,发生期在 4月上旬至 9月中旬。竹长尾小蜂每年 1代 ,以幼虫在虫瘿内越冬 ;成虫于 4月中旬至 5月上旬羽化出瘿 ,产卵于已被竹广肩小蜂产卵的芽中 ;幼虫孵化后占据竹广肩小蜂的虫瘿 ,幼龄时可食竹广肩小蜂幼虫尸体 ;幼虫 5龄 ,发生期有 5月上旬至次年 3月下旬 ,9月后渐入老熟越冬。对这 2种小蜂的卵形态和各虫态生活习性也作了观察研究。表 1参

Aiolomorphus rhopaloides and Diomorus aiolomorphi are two dominant species of bamboo chalcid.Studies have showed that there is one generation per year in Aiolomorphus rhopaloides.Its pupae hibernate in a gall and the adults come out of the gall between late March and mid April.Its larvae have 5 instars that are usually from early April to mid September.There is one generation annually in Diomorus aiolomorphi.Its larvae hibernate in a gall and adults come out of the gall between mid April and early May after emergence, ovipositing in a bud in which ovipositing has been done by Aiolomorphus rhopaloides.The larvae,after hatched,occupy the gall of Aiolomorphus rhopaloides and eat the dead larvae of Aiolomorphus rhopaloides when young.There are 5 instars for larvae that occur from early May to late March of the following year.After September the larvae gradually mature and hibernate.This paper is based on the observation and study of egg morphology,various insect forms and life habits of the two species of bamboo chalcid.