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1 January 2007 Sexual Dimorphism of Basitarsi in Pest Species of Diabrotica and Cerotoma (Coleoptera: Chrysomelidae)
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Abstract

Sexual dimorphism in basitarsal pad morphology is described for prothoracic and mesothoracic legs of Diabrotica virgifera virgifera LeConte, Diabrotica barberi Smith & Lawrence, and Diabrotica undecimpunctata howardi Barber (Coleoptera: Chrysomelidae) and for prothoracic legs of Cerotoma trifurcata (Forster) (Coleoptera: Chrysomelidae). On the indicated legs of these diabroticite beetles, the typical structure of the hairy tarsal pads of chrysomelid beetles is replaced proximally on tarsomere 1 of males by a hairless planar ovoid patch that may facilitate maintenance of the mating posture of males upon the elytra of females. This basitarsal patch proved as reliable as the standard supra-anal plate character for establishing sex of these important crop pests.

Leslie Hammack and Bryan Wade French "Sexual Dimorphism of Basitarsi in Pest Species of Diabrotica and Cerotoma (Coleoptera: Chrysomelidae)," Annals of the Entomological Society of America 100(1), (1 January 2007). https://doi.org/10.1603/0013-8746(2007)100[59:SDOBIP]2.0.CO;2
Received: 5 June 2006; Accepted: 1 September 2006; Published: 1 January 2007
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