Intersexual Aggression and Nectar Defense in Chauliognathus distinguendus (Coleoptera: Cantharidae)

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Abstract
The soldier beetle, C. distinguendus, which defends inflorescences of the tree Coccoloba floribunda against intrusion by conspecific individuals, is unusual among insects in that intersexual agonistic behavior is as strong as intrasexual agonistic behavior. Both behavioral types probably result from competition among individuals of both sexes for a common limiting resource. The limiting resource may be nectar produced by C. floribunda.

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