DESCPJPTION 



eyes, although the facets of the ommatidia 

 closely approach those of the females. The 

 wing size of a normal specimen varies' consider- 

 ably along with differences in general body 

 size. Measurements from tip of sclerite at 

 base of costa to end of radius vein on the cos- 

 tal margin vary from 2.04 to 2,35 millimeters* 

 for female wings and from 1.89 to 2.30 for male 

 v;ings. These figures make it clear that, while 

 males have slightly smaller wings than females, 

 variations which normally occur within each sex 

 are such that measurements are ordinarily of no. 

 avail for sex identification. The microchaetae, 

 however, may be used to differentiate diploid 

 males from haploid males and diploid females, 

 since each bristle on the wing corresponds to 

 and gives indication of the presence of a wing 

 surface cell which is larger in diploid males 

 than in haploid males or diploid females (Spei- 

 cher, 1935; Grosch, 1945). Males also have 

 smaller abdomens with abdominal sternites small- 

 er and thinner than those of females. Abdomi- 

 nal tergites, especially the first and second, 

 are thinner in the males. A transverse sub- 

 basal depression is evident especially on the 

 fourth and fifth tergites of the males. In all 

 types the abdomen is covered, ventrally and 

 laterally, by a cuticle which is thin and trans- 

 parent except for small sclerotized regions at 

 the lateral ends of the abdominal sternites. 



Female genitalia consist of a pair of elon- 

 gate sensory gonapophyses blackened distally, a 

 brownish sting, and a vagina anterior and ven- 

 tral to the gonapophyses. The paired gonads of 

 Habrobracon females each consist of two ovari- 

 oles morphologically composed of three regions: 



