The respiration system and bionomics of the larva of Cybister tripunctatus.
Author of the article:WEI Sui-Gai，LU Wen，QIN Ai-Zhi，LIANG Zi-Ning，MENG Yong-Jun
Author's Workplace：(Agricul tural College, Guangxi University,Nanning 530005, China).
Key Words：larva of dytiscids; respiration system; bionomics; ge neration
Abstract：This paper describes the structure and distribution of spiracles,tracheal trunks and air sacs of dytiscid larva. Based on the results of artificial feeding, the habitats, feeding habits, instars and stadium, cannibalistic behaviour and pupa tion are als