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On the Larval and Pupal Stages of West African Culicidæ

Published online by Cambridge University Press:  10 July 2009

W. Wesché  and
W. M. Graham
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Extract

In dealing with this extremely interesting and valuable collection of Mosquito larvæ and pupae from Lagos, which we owe to the industry of that indefatigable collector and observer, Dr. W. M. Graham, I have endeavoured to give a practical and not too technical description of each species, and I have given illustrations of all tbe principal characters, and of some points of more general interest. If technicalities are indulged in, they are explained in the preliminary text, and in the plates. It has been my object to make it impossible for the careful worker to mistake any one of these larvæ for that of another species, but persons who have experience of such work, know the difficulty of arriving at such results without a knowledge of all known forms, and that knowledge I have no pretensions to possess.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 1 , Issue 1 , April 1910 , pp. 7 - 50
Copyright
Copyright © Cambridge University Press 1910

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References

page 8 note * A strip of zinc 2 mm. broad, and ofx suitable length, fixed in a handle, answers well.

page 8 note † A much bent mosquito pin (silver and as thin as possible) shaped so that it forms a cradle or a little elevation, can be placed in the trough, and the larvæ and pupæ arranged on it, so as to give particular angles; this has been found very useful.

page 10 note * Dan. Selsk. Skr. III. Die eucephale Mvgelarver. Copenhagen, 1886.Google Scholar

page 10 note † “The Structure and Biology of Anopheles maculipennis.” Jour. of Hygiene, 01 1901, p. 55.CrossRefGoogle Scholar

page 12 note * Miall, , ‘Aquatic Insects,’ p. 117Google Scholar, notices this organ in Corethra and Culex larvæ.

page 14 note * Since the above was written I have been able to examine a greater number of preparations; I am now inclined to think that they are more of generic than specific importance.—W. W.

page 15 note * New York State Ed. Dep., 20th Report of tlie State Entomologist—Bull. 97: Entom. 24, pp. 445–9.CrossRefGoogle Scholar

page 17 note * These two species appear again under 8.

page 18 note * This is a character of which it is very difficult to be certain in some cases—the pupæ with rather long trumpets therefore appear again at 12.

page 44 note * These are the appearances with low powers. I have made a preparation of this siphon and find a very minute one below those mentioned ; the serrations on the uppermost spine are more marked than those figured on P1. II, fig. 12.

page 48 note * From this and the succeeding species of larva only a single imago was bred, and owing to an unfortunate confusion it is not yet possible to say which of the two is the true larva of P. fuseus.—ED.