A morphological, biological and molecular approach reveals four cryptic species of Trissolcus Ashmead (Hymenoptera, Scelionidae), egg parasitoids of Pentatomidae (Hemiptera)
Tortorici, Francesco | Talamas, Elijah J. | Moraglio, Silvia T. | Pansa, Marco G. | Asadi-Farfar, Maryam | Tavella, Luciana | Caleca, Virgilio
Accurate identification of parasitoids is crucial for biological control of the invasive brown marmorated stink bug, Halyomrphahalys (Stål). A recent work by Talamas et al. (2017) revised the Palearctic fauna of Trissolcus Ashmead, egg-parasitoids of stink bugs, and treated numerous species as junior synonyms of T.semistriatus (Nees von Esenbeck). In the present paper, we provide a detailed taxonomic history and treatment of T.semistriatus and the species treated as its synonyms by Talamas et al. (2017) based on examination of primary types, molecular analyses and mating experiments. Trissolcussemistriatus, T.belenus (Walker), T.colemani (Crawford), and T.manteroi (Kieffer) are here recognized as valid and a key to species is provided. The identification tools provided here will facilitate the use of Trissolcus wasps as biological control agents and as the subject of ecological studies.
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