ABNORMAL SIREX NOCTILO F. (HYMENOPTERA: SIRICIDAE)

White-eyed forms and gynandromorphs of the wood wasp Sirex noctilo F. (Hymenoptera: Siricidae) are recorded from Victorian Pinus radiara D. Don hosts. It is the first record of these aberrant forms in S. noctilio. Sirex-infested radiata pine billets Pinus rudiatu D. Don, are caged in Victoria annually to provide host material for the parasite breeding programme of the National Sirex campaign. This gives an oppor-tunity to examine large populations of wood wasps Sirex noctilio F. (Hymenoptera: Siricidae) for aberrant forms, some of which are discussed below. White-eyed forms Four male wasps with white compound eyes and white ocelli, quite distinct from the normal black eyes (Plate IA), were collected from approximately 15,000 insects that emerged in 1964. Since then, subsequent generations of Sirex were inspected for the abnormality, but it was not until 1970 that another white-eyed male and, for the first time, a similar female were collected. There is no previous record of this abnormality in S. noctilio. In the vinegar fly Drosophila rnelanogaster Meigen (Diptera: Drosophilidae) Morgan found white