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Resting Position of Haitian Anopheles

Since Ross' interesting observation¹ that the abdomen of an adult anopheline when at rest forms an angle with the surface, while that of a culicine roughly parallels it, the statement, in the light of subsequent experience of many workers, has taken on axiomatic significance. To be sure this condition holds apparently in most cases. At least two exceptions to this generalization however, are known for anophelines. James and Liston² mentioned Anopheles culicifacies in India as resting in a Culex-like attitude. A similar resting position is taken by A. quadrimaculatus according to Darling.³

The two species of Anopheles known from Haiti both rest in the anopheline manner. Nevertheless merely a glance suffices to distinguish one from the other. A. albimanus falls into the more or less orthodox type, that is, the body projects at about a 45° angle from a vertical surface on which the insect is resting.

Received April 23, 1926.
¹ British Medical Journal, September 9, 1899.

² A Monograph of the Anopheline Mosquitoes of India, Calcutta, 1911, p. 72.

³ Southern Medical Journal, June, 1925, p. 446.