CUTICULAR HYDROCARBONS OF SPECIES WHICH INTERACT ON 4 TROPHIC LEVELS - APPLE, MALUS-PUMILA MILL, CODLING MOTH, CYDIA-POMONELLA L, A HYMENOPTERAN PARASITOID, ASCOGASTER-QUADRIDENTATA WESMAEL, AND A HYPERPARASITE, PERILAMPUS-FULVICORNIS ASHMEAD

1. 1. Cuticular hydrocarbon compositions were determined for: fruit and seed coat of apple, larvae and adults of codling moth; male and female adult Ascogaster quadridentata and Perilampus fulvicornis (Hymenoptera). 2. 2. The major cuticular hydrocarbons of codling moth larvae were identical to those extracted from the cuticle of the fruit and seed coat of its host, apple, although the larvae were reared on artificial diet shown to have a very different hydrocarbon content. 3. 3. The cuticular hydrocarbon composition of A. quadridentata was similar to that of the adult of its host, codling moth. 4. 4. Pentacosene, a major component of the cuticular hydrocarbons of female P. fulvicornis was the dominant component in the surface lipids of its host, A. quadridentata. © 1989.