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The present study was undertaken to examine of the subfamily Tersilochinae (Hymenoptera: Ichneumonidae) in Türkiye. The Tersilochinae, one of the 47 subfamilies are a worldwide subfamily of the parasitoid wasp family Ichneumonidae. This subfamily, are koinobiont endoparasitoids of Coleoptera larvae, (although Symphyta larvae are recorded as hosts of one genus). Hosts include Curculionidae and Chrysomelidae so Tersilochinae are used for biological control. Tersilochinae species constituting the study were collected from parts of Türkiye between 1995-2022. At the same time, the study also added before 1995 literature information. 42 species from genera of Aneuclis, Barycnemis, Diaparsis (Diaparsis), Diaparsis (Nanodiaparsis), Gelanes, Heterocola (Heterocola), Heterocola (Heterocoloides), Phradis, Probles (Euporizon), Probles (Microdiaparpis), Probles (Probles), Tersilochus (Gonolochus) and Tersilochus (Tersilochus) have been identified from Türkiye so far. The study consist of 217 samples. Among these species, Heterocola (Heterocola) longipalpis Kolarov & Beyarslan is endemic for Türkiye at now. With this, Heterocola (Heterocola) nigrotibialis Horstmann and Kolarov, Tersilochus (Gonolochus) rugulosus Horstmann, Tersilochus (Gonolochus) nitens Horstmann & Kolarov and Tersilochus (Tersilochus) cognatus Holmgren are rare species for Türkiye. Again, Probles (Microdiaparpis) Horstmann is dense in terms of number samples, Phradis Förster and Tersilochus (Tersilochus) Holmgren are dense in terms of number species. Among the species determined, Probles (Microdiaparpis) anatolicus Horstmann, Aneuclis incidens (Thomson) and Barycnemis harpura (Schrank) were recorded the most abundant species in research areas. In addition to all this, species composition has created for each species and new location information of this subfamily has been added. Bingöl (Karlıova) provinces is the new locality for this subfamily.
Çoruh et al. (Sat,) studied this question.