Document Type

Article

Journal/Book Title/Conference

The American Naturalist

Volume

121

Issue

4

Publication Date

4-1-1983

First Page

540

Last Page

551

Abstract

Throughout the great class of insects the males almost always emerge from the pupal state before the other sex, so that they generally swarm before any females can be seen. The cause of this difference between the males and females in their periods . . . of maturity is sufficiently obvious. Those males ... which in the spring were first ready to breed ... would leave the largest number of off spring: and these would tend to inherit similar instincts and constitutions. [Darwin (1871, p . 260)).

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