Reproductive Behavior and Dispersal in Umbonia Crassicornis (Homoptera: Membracidae)

Sibling male Umbonia crassicornis leave aggregations before and disperse further than females. Males leave their natal host tree shortly after leaving the aggregation while sibling females mate and oviposit near their natal host. Under greenhouse conditions sibling females mate before their brothers. Age discrimination in mate choice by females appears to promote outbreeding among siblings.