The parasitizing behavior of the scelionid, Telenomus euproctidis Wilcox,on the eggs of its host Euproctis pseudoconspersa Strand in the laboratory was investigated with aid of steromicroscope.For the purpose of convenient observation and description in detail,behavior processes were divided into six discrete steps:antennae drumming,adoption of probing posture,ovipositor probing,drilling,oviposition and external marking.Each duration time of the processes was 13.82,3.10,3.70,53.30,49.60 and 7.50 seconds,respectively.The roles of parasitizing behavior in the evolutionary system between insect a...