喙尾琵甲（鞘翅目：拟步甲科）形态记述及生物学特性观察

记述了喙尾琵甲Blaps rhynchopetera Fairmaire各虫态特征,观察了其生物学特性.实验种群1月下旬至12月上旬产卵,卵期为8～15 d;幼虫期141～213 d,共9～13龄,第9龄以后,龄期较长;蛹前期8～14 d;蛹期12～24 d.成虫羽化24～92 d后性成熟,开始交配产卵活动,成虫期超过18个月.自然种群在昆明和曲靖1年发生1～1.5代,世代重叠严重;以不同龄期幼虫和成虫越冬,越冬幼虫于次年4月上旬开始化蛹,新羽化成虫于4月下旬至12月上旬交配产卵,成虫全年都能活动、产卵.该虫为夜出型、暂栖性土壤昆虫,喜潮湿阴暗的环境.成虫具有夜出习性、防御性和群聚性.

Morphological and biological characteristics of Blaps rhynchopetera (Coleoptera: Tenebrionidae)

Blaps rhynchopetera is a kind of folk medicinal insects which is widely used in Yunnan Province , China. It was described in this paper that morphological characters, the main biological characteristics and behaviors of B. rhynchopetera based on the field investigations and indoor experiments. The female beetles laid eggs from the end of January to early of December in laboratory condition. The eggs hatched about 8 - 15 d after they are laid. In general, the beetles went through 9-13 larval instars. The whole larva stage took up 141 -213 d. The exarate pupae appeared from early April to early November. The prepupa stage took up 8 - 14 d. The pupa stage took up 12 -24 d. The insects matured sexually and began to mate and lay eggs 24 - 92 d after they emerged. The adult stage lasted over 18 months. B. rhynchopetera completed 1-1.5 generations per year in Kunming and Qujing region of Yunnan province , southwestern China. The stages of adult and larva were longer than other stages in its life cycle, and the life history was irregular. The insect overwintered in adults and larvae of different instars in soil. Overwintering larvae pupated in April of second year. The new generation of adults copulated and laid eggs in late April to early December. The adults were more active in night than in day time. The adults have defensive gland and could use chemical defensive to protect themselves. Both adults and larvae preferred to living in wet and dark environment, and getting together.