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Dual Function of the Damselfly Penis: Sperm Removal and Transfer
Jonathan K. Waage
New Series, Vol. 203, No. 4383 (Mar. 2, 1979), pp. 916-918
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1747893
Page Count: 3
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The male of Calopteryx maculata (Beauvois) (Odonata) uses its penis not only to transfer sperm to the female but also to remove sperm deposited in the female's sperm storage organs from previous matings. Apparently, no such sperm removal function has previously been attributed to the intromittent organ of any animal.
Science © 1979 American Association for the Advancement of Science