New Parasitoids of Longhorn Beetles (Coleoptera: Cerambycidae) in Bulgaria

During the period 2005-2017, nine new hymenopteran and dipteran larval parasitoids of longhorn beetles (Coleoptera: Cerambycidae) were recorded in Bulgaria: Ontsira antica (Wollaston), Doryctes leucogaster (Nees), Spathius umbratus (F.), Helcon angustator Nees (Hymenoptera: Braconidae), Helcostizus restaurator (F.), Ischnoceros rusticus (Geoffroy), Rhimphoctona xoridiformis (Holmgren) (Hymenoptera: Ichneumonidae), Billaea triangulifera (Zetterstedt) and Billaea adelpha (Loew) (Diptera: Tachinidae). Doryctes leucogaster, S. umbratus and H. angustator were reared from Phymatodes testaceus (L.), O. antica - from Rhagium inquisitor inquisitor (L.), H. restaurator - from Molorchus minor (L.), I. rusticus - from Morimus asper funereus Mulsant, R. xoridiformis - from Tetropium castaneum (L.), Billaea adelpha and Billaea triangulifera (Diptera: Tachinidae) - from Prionus coriarius (L.). Rhimphoctona xoridiformis is a new for the Bulgarian fauna. Three new host-parasitoid relationships were recorded for the first time: Rhagium inquisitor inquisitor - Ontsira antica, Morimus asper funereus Ischnoceros rusticus and Prionus coriarius - Billaea triangulifera.