A monograph of the Anopheles mosquitoes of India / by S.P. James and W. Glen Liston.

  • Sydney Price James
Date:
1904
Catalogue details

Licence: In copyright

Credit: A monograph of the Anopheles mosquitoes of India / by S.P. James and W. Glen Liston. Source: Wellcome Collection.

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    Mr, Theobald's Classification of Mosquitoes The CJiironomidcB or midges have neither a long sucking pro- boscis nor scaly wings. The Cecidomyidm or gall-midges have the body and wings covered with hairs, not scales, and the venation of the wings is simple, no fork-cells being present. The PsychodidcB or owl-midges have the wings densely covered with hairs, not scales. The SlmulidcB, TipulidcB, etc., have the wing-veins bare, without hairs or scales. There is really no difficulty, therefore, in distinguishing mos- quitoes from other flies which seem to resemble them. The family CulicidcB is divided, for the purposes of classification, into a number of sub-families, genera, and species. Up to the present, entomologists have based these subdivisions entirely upon differences in the adult insects, but there are good reasons for thinking that differences between mosquitoes in the larval or imma- ture stages of their existence are also of great importance for the purposes of classification and identification. The larvae of only a few species are, however, accurately known, and at present we must be content to follow, at any rate in the main, the somewdiat unscientific methods of classification adopted by entomologists. Mr. F. V. Theobald, who is the greatest authority upon mosquitoes, divides them into the following sub-families :— 1. The Anophelina containing at present 11 genera and about 80 species. 2. The Megarhinina ,, 3. The Culicina ,, 4. The Johlotina ,, 5. ThQ Heptaphlehomyina,, 6. The Aedeomyina ,, 7. The Corethrina ,, The characteristics of the adult insects upon which these sub- families are based are as follow :— 1. Palpi long in both sexes ; about as long as proboscis Anophelina. 2. Palpi long in both sexes; shorter than the proboscis in the female; proboscis long and bent ... Megarhinina. 3. Palpi long in the male, very short in the female ... Culicina. 4. Palpi as in Culicina. Seven instead of six longitudi- nal veins on the wings ... ••• Heptaphlebomyina.. 5. Palpi as in Culicina. Metanotum with hairs and scales Johlotina. [5 55 2 „ 35 „ 20 5) 35 17 „ 33 numerous 3 3 55 1 genus 3 3 1 33 3 J 1 „ 33 1 3 3 5 3 20 genera 33 about 5-5 5 3 3 3 2 „ „ 18
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