Mompha idaei is a moth in the family Momphidae first described by Philipp Christoph Zeller in 1839.

[1][2][3][4] It has a Holarctic distribution;[2][4] in North America it is found from coast to coast in the boreal forest south to Colorado and Washington.

[3] Adults are on wing in May to July.

[4] The larvae live in the roots of Epilobium angustifolium[3][4] and Epilobium latifolium.

This article on a moth of the family Momphidae is a stub.