Published online by Cambridge University Press: 31 May 2012
Macrocentrus gifuensis Ashm. a braconid of the subfamily Macrocentrinae is a parasite of the European corn borer, Pyrausta nubilalis Hubn., in both Europe and the Orient. It was introduced into America as a possible agent in the biological control of this pest. It has been bred in the laboratory for release by the author over an extended period, during which time comprehensive data on its life history have been accumulated (Wishart, 1946). Eggs are laid in the immature corn borer larvae and their polyembryonic development has been adequately described by Parker (1931).