Trichogramma evanescens is a 0.5mm long[1] parasitoid wasp which parasites Lepidoptera eggs.

In the Philippines this parasitoid has been used to eradicate the Asian Corn Borer, a pest of maize in East Asia.

Some companies sell this insect in the pupal stage to be deposited in fields that have Lepidoptera pests.

[2] In 2021 the National Trust in England embarked on a trial of using T. evanescens, which parasitises clothes moth eggs, in conjunction with pheromones to control common clothes moths, which cause serious damage to carpets, furniture, clothing and other wool and silk objects in historic buildings.

[4] It was suspected that the high interiors may not have been suitable and the Trust may continue to use the wasps in smaller stores or where they can be sited close to a known infestation source.