Fig. 3

Morphotypes of cercariae recorded from five snail species in the East Nile locality, Khartoum, Sudan. The types are:- a) Schistosoma haematobium (or related species); b) S. mansoni; c) amphistome; d) echinostome; e) parapleurolophocercous; f) lophocercous-apharyngeate; g) avian schistosome, i.e. brevifurcate-apharyngeate distome cercariae; h) Type 1; i –l) four types of xiphidiocercariae: i) Type 1, j) Type 2, k) ornatae, l) armatae; m) LPM; n) Type 5; o) Type 2; p) Type 3; q) Type 4; r) Type 6; s) Type 7; t) longifurcate-pharyngeate distome cercaria (Strigea). The photos are not to the same scale