﻿48 F. W. EDWARDS — A SYNOPSIS OF THE SPECIES OF 



The specimens from German East Africa were recorded by J. Vosseler (Deut. 

 Ent. Zeitschr., 1907, p. 248) as E. guinquevittatus ; they were taken at an alti- 

 tude of 914 metres. 



5. E. leucopus, Graham (leucopous), Entomologist, XLII, p. 88 (1909). 

 Ashanti; S. Nigeria (Bende, 1 Q taken in dispensary, 5 p.m. 14. v. 1911, 



Dr. Macdonald). 



6. E. oedipodius, Graham {oidipodeios), Entomologist, XLII, p. 86 (1909). 

 Ashanti ; Gold Coast (Bibianaha, Dr. H. G. F. Spurrell) ; Uganda (Damba 



Island, L. Victoria Nyanza, Dr. G. D. H. Carpenter). 



Sub-family 2. CHAOBOKINAE. 



Proboscis not longer than the head ; palpi curled downwards and inwards ; 

 antennae of male plumose, of female verticillate ; thorax projecting somewhat 

 over the head ; claws equal and simple in both sexes (except Pelorempis) ; the 

 whole insect hairy, the wings densely so ; scales absent (except on the wing- 

 fringe and, in Ramcia, on the veins of the wings). 



Genus Chaoborus, Lichtenstein. 



Arch. Zool. (Wiedemann's) I, p. 174 (1800). 



Corethra, Mg\, Illiger's Mag. II, p. 260 (1803) (part), et auct. 

 Sayomyia, Coq., Can. Ent. XXXY, p. 402 (1903). 

 Although Lichtenstein's Chaoborus antisepticus is probably not determinable 

 specifically, as he only described the larva, yet his description and figure are 

 quite recognisable as applying to some species of Coretkra (Sayomyia), and hence 

 his name must be used, as it was published three years before Meigen's. 



Only two African species belonging to this sub-family have been described, 

 each from a single female, both being true Chaoborus. 



1. C. ceratopog'ones, Theo., Mon. Cul. Ill, p. 338 (1903). 



A small species, the femora and tibiae with numerous small dark rings. Wings 

 with three dark blotches on the costa. A very pretty and distinct species, much 

 resembling C. queenslandensis, Theo.; the latter differs in venation and in having 

 only two dark spots on the costa. The European C. pallidas, F., is somewhat 

 similar, but is much larger and has only a median dark mark on the wings 

 extending from the costa over the cross-veins. 



Gambia. 



Fig. 10. — Chaoborus pallidipes, Theo. Side view of head and thorax. 



