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Revised Keys to the Known Larvae of African Culicinae

Published online by Cambridge University Press:  10 July 2009

F. W. Edwards
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Extract

When, early in the present year, Dr. A. Ingram sent in to the Entomological Research Committee his collection of larvae and bred adults of culicinae from Bole, Northern Territories, Gold Coast, the writer decided to describe these as soon as possible, and the opportunity seemed favourable to include a thorough revision of the known larvae of the African culicinae. The results of this work are given in the following tables. The difficulties of classification might have been considerable, but for the valuable pioneer work of Messrs. Dyar and Knab* in America, and the present author is glad to express his indebtedness to these writers, and would like to add his testimony, if any were needed, to the soundness of their general classification. The paper by Wesché† in this journal is also very important, as it is the only one devoted to a study of the larvae of African culicidae. Figures of most of the species not illustrated here will be found in it.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 3 , Issue 4 , December 1912 , pp. 373 - 385
Copyright
Copyright © Cambridge University Press 1912

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References

* “The Larvae of Culicidae classified as Independent Organisms.” By Dyar, Harrison G. and Knab, Frederick; Journ. N. Y. Ent. Soc, XIV, 1906, pp. 169–230, pls. iv-xvi.Google Scholar

† Bull. Ent. Res. I, April 1910, pp. 6–50, pis. i–vii.Google Scholar

‡ This character also occurs in an undetermined larva of the Aëdes group (see note under Stegomyia sugens). In this larva, however, the comb is present in addition, which is not the case in Toxorhynchites.

* An examination of the male genitalia proves that M. africanus is after all quite distinct from M. uniformis: figures will be given later. Both species occur commonly in Africa.

† Bull. Ent. Res. III, p. 76 (1912).Google Scholar

* This species would fall into the genus Lutzia (= Jamesia) as used by Dyar and Knab, but as there is no tangible adult character to separate it from Culex I prefer not to use it. The larval characters distinguishing it from typical Culex are the predaceous habit, the outwardly folded mouth-brush modified into a prehensile pencil, and the pointed anal segment.

* Characters given by Dyar and Knab. This is the species often referred to as fatigans. Wied.

† This determination is questionable. No specimens of C. guiarti from Lagos are in the British Museum Collection.

* I have found this to be the case in breeding Culex pipiens, and still more strikingly in Theobaldia annulata. The younger larvae have the shorter siphons.