none no species noneEmail20150319 In order to investigate the effects of Hidryta sp. and Idris sp. on egg hatching of Pardosa pseudoannulata and P. astrigera around Erhai Lake, Yunnan province, P. pseudoannulata and P. astrigera with egg sacs were collected, and egg sacs hatching were observed for one year. Typically, when an egg sac is parasitized by Hidryta sp., there is only one wasp emerge, and no spiderling. With regard to Idris sp., the number of parasitoids emerge from per egg sac ranges from one to dozens, and still with spiderling hatching out. Between spider egg sacs unparasitized and parasitized by Idris sp., there is no significant difference in hatching output of P. pseudoannulata (P>0.05), while there shows significant difference in hatching output of P. astrigera (P<0.01). Individual hatching output shows that the effect level of Hidryta sp. on P. pseudoannulata is greater than Idris sp., and the effect level of Hidryta sp. on P. astrigera is less than Idris sp..