Field attractiveness of chirally defined synthetic attractants to males ofDiprion similis andGilpinia frutetorum.

Field attractiveness of synthetic attractants toward males of two introduced species of sawflies was examined. It was first established that the esters of 2S,3S,7S-3, 7-dimethylpentadecan-2-ol (diprionol), which have been active toward males of manyNeodiprion species, were inactive toward males ofDiprion similis andGilpinia frutetorum, To determine the chiral combination of the alcohol moiety, four different isomers, each containing specific chirally defined carbons, were synthesized. As a result it was concluded that the most active chiral arrangement of diprionol for these species is 2S, 3R, 7R.