Gilen gen. nov. (type species G. orientalis sp. nov.) from South East Asia is described and illustrated. The new taxon has a produced mid-longitudinal facial projection, which differentiates it from all other known genera of Ichneumonidae. It belongs to the tribe Perilissini in the subfamily Ctenopelmatinae (Hymenoptera, Ichneumonidae) and is recorded from Laos, Northern Thailand and Vietnam.

Additional Metadata
Keywords Hymenoptera, Ichneumonidae, new genus, new species, parasitoid, facial projection, Laos, Thailand, Vietnam, Oriental Region
Journal Acta Entomologica
Citation
Reshchikov, A, & van Achterberg, C. (2018). The Unicorn exists! A remarkable new genus and species of Perilissini (Hymenoptera: Ichneumonidae) from South East Asia. Acta Entomologica, 58(2), 523–529.