Last modified: March 6, 2021, 6:07 p.m.
Recorded for the first time from Belgium in 2018 in OV. Hitherto a very rare and local species.
Whitish yellow to yellowish brown; head shining black, prothoracic plate light brown with a pair of dark brown spots; pinacula concolorous with body.
The eggs are deposited singly on the flowers and seeds of the foodplant. The larva lives in the seeds. It spins several seeds together and empties their content. When full-fed it descends downwards the stem and bores into the stem, then moving upwards until a node is reached. It hibernated in this place. In late spring the larva gnaws a passage in the stem, leaving only a very thin skin, and then pupates inside the stem.
The adults fly in late afternoon about the foodplant. It rarely comes to light.
One generation a year: June–mid-August.
Grassland in limestone areas.