The morphology of the immature stages of some South African Culicoides species (Diptera: Ceratopogonidae).

NEVILL, E. M. The morphology of the immature stages of some South African Culicoides species (Diptera: Ceratopogonidae). Onderstepoort J. vet . Res., 36 (2), 265-284. The morphology of the fourth larval stage of eight South African Culicoides species and of the pupae of seven species was stud ied. The value of ex isting taxonomic characters was tested and several useful new characters were found. Keys were constructed for the identification of both these stages. It is hoped that these studies will form a basis for future taxonomic work on the remaining South Afr ican Culicoides species. Introduction Material and Methods (a) Source of material for study (b) Preparation and study of material ( I) Larvae . . (2) Pupae .. Discussion of Results (a) Fourth instar larvae ( I) Recognition . . (2) General features (3) Size (4) Detailed study of the heads (a) Mandibles (b) Pharynges (i) Hypopharynx (ii) Epipharynx .. CoNTENTs (5) Structure and chaetotaxy of the head (6) Chaetotaxy of the body (7) Anal papillae .. (8) Key to fourth instar larvae