Sex pheromone specificity in the pine sawflies: interchange of acid moieties in an ester.
In laboratory studies in Wisconsin on sex-pheromone specificity in pine sawflies (Diprionidae), 3,7-dimethylpentadecan-2-ol was identified as the free alcohol in Neodiprion lecontei (Fitch), N. sertifer (Geoffr.) and Diprion similis (Htg.). The major component of the sex attractant was the acetate of this alcohol for the first 2 species and the propionate for the last species. Electroantennograms of males of several Neodiprion species showed that 4 responded to the acetate and 6 to the propionate. In field tests, N. sertifer, N. lecontei and Gilpinia frutetorum (F.) (D. frutetorum) were attracted to the acetate and D. similis and N. swainei (Middleton) to the propionate.