Entomophthora floridana (Entomophthorales : Entomophthoraceae) Attacking the Sugi Spider Mite, Oligonychus hondoensis (Acarina : Tetranychidae), in Japan

Abstract

An entomophthoraceous fungus, Entomophthora floridana, attacked the Sugi spider mite, Oligonychus hondoensis, in a plantation of Japanese cedar, Cryptomeria japonica, in the Kyushu District of Japan. The fungus infected mainly the adult mite. It formed primary conidia and two types of secondary conidia. The mites were infected by one of the secondary types of conidia (anadhesive spores). Only resting spores occurred in the dead mummified mites during winter.