Last modified: Sept. 16, 2023, 10:03 a.m.
A very rare and local species throughout Belgium.
Native
Wingspan: 22–28 mm.
Genitalia preparation is necessary for the correct identification of this species, see O. strigilis Linnaeus, 1758 and O. latruncula Linnaeus, 1758.
The larva hibernates and it pupates in a flimsy cocoon among the roots of the food plant.
The adults come to light and sugar.
The adults fly in one generation from early May till mid-August.
The larva lives on various Graminae.