Efficiency of Trissolcus spp. (hymenoptera : scelionidae)‎ as egg parasitoids of eurygaster integriceps puton (hemiptera : scutelleridae)‎ in Iran

الملخص EN

The natural control exerted by egg parasitoids of Sunn Pest, Eurygaster integriceps Puton, in wheat fields in Varamin, Iran from 1997-1998 was assessed.

A total of 306 egg masses were collected and 70 of them (22%) were parasitized by Trissolcus grandis Thomson, T.

vassilievi Mayer, T.

semisteriatus Nees or T.

basalis Wholaston.

Parasitism efficiency was >90% for all species.

The impact of these parasitoids on Sunn Pest populations was 22.30% and 23.43% for 1997 and 1998, respectively.