Biological control and the species status of two host-associated populations of Trissolcus basalis (Wollaston) (Hymenoptera: Scelionidae) [parasitoid of green vegetable bug and horehound bug]
1994
Clarke, A.R. | Walter, G.H. (Queensland Univ., Brisbane (Australia). Dept. of Entomology)
Populations of the morphologically defined taxon Trissolcus basalis (Wollaston) from 2 major hosts (Nezara viridula [L.] and Agonoscelis rutila [F.]) were tested, using biological criteria, to determine whether they represented populations of 1 genetical species, or whether they represented populations of 2 host-associated sibling species. Individuals from both hosts exhibited no obvious courtship differences and they selected mates at random in mate-choice experiments. In addition, female wasps produced offspring of both sexes after mating with a male from either population. It was concluded that the individuals of the 2 populations tested constitute a single genetical species.
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