Trissolcus basalis (parasitoid)
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Trissolcus basalis (parasitoid) (Wollaston, 1858)
The species is an egg parasitoid of Pentatomidae, e.g. Nezara viridula. It is wide-spread and has been introduced into several countries as a biocontrol agent, for example into Hawai'i in 1963 and 1964. However, while the introduction was considered successful, there is evidence that the release has had negative effects on several native stink bugs (Follett et al. 2000).
Adult wasps emerge from the parasitized eggs after about 10 days. They are black, slight more than 1 mm long and feed on the nectar of certain flowering weeds.
For a taxonomic review see Talamas et al. (2017).