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BackgroundIn 2020 and 2021, chalcidoid parasitoids (  Hymenoptera  ,   Chalcidoidea  ) of bark beetles in pine (   Pinus    spp.) plantations were studied in Bulgaria. Samples (cuttings of stems and branches) of pine trees infested by bark beetles were collected from seven plantations of    Pinus   sylvestris    and    P.   nigra    in Bulgaria. From each sampling plot, five cuttings were collected and placed in photoeclectors in laboratory conditions (18-22ºC). Emerged bark beetles and parasitoids were regularly gathered and fixed in ethanol.New informationSix parasitoid species -    Dinotiscus   colon   ,    Metacolus   azureus   ,    M.   unifasciatus   ,    Rhopalicus   quadratus   ,    R.   tutela    (  Chalcidoidea  :   Pteromalidae  ) and    Heydenia   pretiosa    (  Chalcidoidea  ,   Heydeniidae  ) were reared from five bark beetle hosts (   Ips   acuminatus   ,    Pityogenes   bistridentatus   ,    Pityophthorus   pityographus   ,    Tomicus   piniperda    and    T.   minor   ). Amongst them, three species (   H.   pretiosa   ,    M.   azureus    and    R.   quadratus   ) are recorded as new for Bulgarian fauna.

biodiversity data journal

New parasitoid (  Hymenoptera  ,   Chalcidoidea  ) records of bark beetles (  Coleoptera  ,   Curculionidae  ,   Scolytinae  ) in pine plantations in Bulgaria