Smithsonian Report, 1958.—Knipling PLATE 1 
1. Adult screwworm flies. male left, female right. The screwworm is about three times as 
large as the common house fly. 
2. Eggs of the screwworm fly. Each female deposits 200 to 300 eggs, usually in a single 
compact mass, on the edges of wounds on the host. (See pl. 6.) 
5 
5 
