挪威南部地区蚁形郭公虫(Thanasimus formicarius)生活史(英文)

在自然和实验条件下，对蚁形郭公虫（Thanasimusformiyarius（L）生活史及有关生物学进行了研究。基于逐月野外调查结果，报道了蚁形郭公虫群飞期，以及该虫的卵、幼虫、蛹、预蛹和成虫等各发育阶段的历期。研究结果表明，蚁形郭公虫在挪威南部地区的生活史长达2年零4个月。在生活史的第1年里，该幼虫在受害的挪威云杉树基的蛹穴内越冬；成虫于次年羽化并逐步发育成熟。这些成虫将在树干裂缝中越冬，然后于第3年春产卵繁殖。研究揭示，在挪威南部地区，蚁形郭公虫的发生期与多种小蠹虫的危害期吻合。

LIFE CYCLE OF THANASIMUS FORMICARIUS (COLEOPTERA: CLERIDAE) IN SOUTHERN NORWAY

Observations on the Iife cycle and bionomics of Thanasimus formicarius (L. ) were made under natural conditions and in the Iaboratory. The stud1es provlde information on mass flight, development periods of eggs, larvae, pupae and prepupae, and adult maturation stage based on monthly field investigations. The results of the research suggest that the overall life cycle of T. formicarius covers approximately two years and four months in southern Norway. During the first year of the life cycle, the clerid larvae overwinter in the pupal chambers at the bases of attacked spruce trees; adults emerge and mature sexually in the second year; and the mature adults overwinter inside the bark crevices of trunk and oviposit in the spring of the third year. The studies also expose that the clerid occurence coincides well with the bark beetle attacks occurring in spring and autumn in northern Nor way.