A scarce southern species that resembles a red and black ichneumon wasp. Packer (1987) lists records and observations to the early 1980s (as Alysson lunicornis).
Southern England from the Devon side of Lyme Regis to east Kent and north to Huntingdonshire and Warwickshire. A record from Norwich (Bridgman, 1875) remains unconfirmed. Abroad, widespread but uncommon in Europe (excluding Fennoscandia); also north Africa and Mongolia.