The Biology of Hadronotus Ajax Girault (Hymenoptera - Scelionidae), a Parasite in the Eggs of Squash-Bug (Anasa Tristis DeGeer)1

Abstract

Anasa tristis DeGeer is a common pest on squash vines in North Carolina, as well as in many other parts of the United States. Hadronotus ajax Girault is one of the more important parasites attacking the eggs of the squash-bug at Raleigh, North Carolina. The squashbug is difficult to control by chemical means, so even a partial natural control by parasites is of considerable value. An attempt has, therefore, been made to learn something of the biology of this parasite. The work was done during the summers of 1940 and 1941, in the department of Zoology and Entomology of the North Carolina State College at Raleigh, North Carolina.