Common Hover Fly Parasitoid Wasp

<em>Diplazon laetatorius</em>, commonly known as the common hover fly parasitoid wasp, is a parasitoid wasp in the family Ichneumonidae. Its conservation status has not been formally evaluated by the IUCN. The species is recorded from Asia (including Taiwan), Europe, and North America, suggesting a broadly Holarctic distribution. As a parasitoid, it typically develops as a larval endoparasite within the larvae of syrphid flies (hover flies), playing a role in regulating populations of its hosts across diverse terrestrial ecosystems. Its wide geographic range reflects the cosmopolitan distribution of its syrphid hosts. Diet information beyond parasitoid ecology is not available in current records. Biological traits of this species remain poorly documented in the scientific literature.