Notes on the anatomy and life-history of two gall-midges, cecidomyia oleariae, mask. and cecidomyia shawiae, n.sp

Abstract

Cecidomyia oleariae, Mask. and C.Shawiae n.sp. Order Diptera. Series Nematocera, super-family Cecidomyoidea family Cecidomyidae (Itonididae) sub-family Cecidomymae, tribe Cecidomyiariae. Of the two gall midges described in this paper the one, Cecidomyia oleariae Mask., in the larval stage causes galls to form on the axils of the young leaves and shoots of the native shrub Shawia paniculata, Forst. The larva of the other, Cecidomyia Shawiae n.sp., inhabits chambers in the leaves of the same shrub. The host-plant, Shawia paniculata (Clearia Forsteri, Hook f.; Olearia paniculata, Cheesem.) commonly known as akeraho or golden akeake and often improperly called akepiro, is a much branched shrub or small tree. Its leaves, the margins of which are strongly undulated, are light green in colour above and covere with a white tomentum on the under surface.