Abstract
Saito, Y., 1995. Sociobiological Aspects of Spider Mite Life Types. J. Acarol. Soc. Jpn., 4(2): 55-67. Various life styles(life types)observed in Tetranychinae were examined from the viewpoint of sociobiology. It was demonstrated that most spider mite species have elements of sociality to some degree. The most primitive stage of sociality appeared as a web egg cover in the tribe Eurytetranychini. In the Tetranychini, there were various life types which may reflect different kinds of social organization. Parasocial life(highly developed subsociality)where individuals behave cooperatively was observed in the genera Eotetranychus and Schizotetranychus. Environmental, phylogenetic, life historical and behavioral characteristics were discussed as factors enhancing the social life of spider mites.