Abstract
AbstractThe biology of Hemithynnus hyalinatus Westwood is described. The wasps usually have a one‐year life cycle in contrast to the two‐year life cycle of their hosts. Adults of the wasps H. hyalinatus and Guerinus shuckardi Guérin emerge from their cocoons at different times and in the field can attack different generations of the same host species. Better control of one scarabaeid species might therefore be achieved by the use of several species of Thynninae. Female H. hyalinatus oviposit once every three days, but need to mate frequently for continued oviposition, because they obtain food regurgitated by the male wasps while mating.
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