﻿AFRICAN CULICIDAE, OTHER THAN ANOPHELES. 7 



golden-yellow scales in the middle of the head, produced in front as a tuft of 

 " hairs," and the golden-yellow scales on the sides of the thorax, indicate a 

 possible relation to Banksinella. The marbled legs with traces of pale basal 

 banding on the hind tarsi, will distinguish it from the other three species. The 

 species was recorded from the Suez Canal ; the only Aedine I have seen from 

 there which at all corresponds to the description of T. africanus is Ochlerotatus 

 dorsalis, Mg., which has the hind claws toothed and has speckled wings, the latter 

 character not being mentioned by Neveu-Lemaire. O. dorsalis has several times 

 been taken on board ship in the Suez Canal. 



Genus Stegomyia, Theo. 



Mon. Cul. I, p. 283 (1901). 



Armigeres, Theo., Mon. Cul. I, p. 322 (1901). 

 Desvoidya, Blanchard, Les Moustiques, p. 265 (1905). 

 Gymnometopa, Coquillet, Proc. Ent. Soc. Wash. VII, p. 183 (1906). 

 Kingia, Theo., Mon. Cul. V, p. 135 (1910). 



This genus was founded upon the world-wide S. fasciata, F., with which has 

 been included a number of other species ; most of these have since been trans- 

 ferred to other genera. Stegomyia is now recognised as a genus of the Aedes group 

 allied to Ochlerotatus, but differing from that genus in the thin male palpi. The 

 eighth abdominal tergite in the female is larger than in normal Ochlerotatus, and 

 not completely retractile ; while the female genital appendages (cerci) are usually 

 rudimentary, though quite well developed in S. simpsoni ; in Ochlerotatus they 

 are nearly always well developed. The genus Stegomyia shows considerable 

 variation also in the structure of the male claws and genitalia. In the group 

 Kingia (including apicoargentea, fraseri, africana, luteocephala, poweri, simpsoni, 

 metallica and pseudonigeria), characterised by Theobald as having flat scales in 

 the middle line of the thorax in front (which is the case in all the above eight 

 species), the larger claws of the male are all simple, a very unusual feature. The 

 various forms of the male claws are shown in the following table of the ungual 

 formulae of the African species : * 



S. simpsoni ... O.O. O,0. 0.0. 



S. metallica 1 



S. africana > O.l. 0.1. 0.0. 



S. apicoargentea J 



S. luteocephala 



S.fasciata ... 



S. sugens ... 



The males of the other species are unknown. S. (Desvoidya) obturhans has claws 

 of similar structure to those of S. sugens, and has very peculiar genitalia. 



The type species of Gymnometopa ( G. mediovittata, Coq., not, as Theobald 

 states, G. sexlineata, Theo.) has toothed claws in the female, so that this genus 

 becomes a synonym of Stegomyia rather than of Howardina. 



Some of these formulae differ from those given by Theobald, but I can vouch for their 

 correctness, and have not come across any variations. 



0.1. 



0.1. 



1.1. 



1.0. 



O.O. 



0.0. 



1.1. 



1.1. 



0.0. 



