De Fré Ch. 1858.
Catalogue des Microlépidoptères de la Belgique. — Annales de la Société entomologique belge
45–162. On page 121.
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Specimens in nature
The larva lives in the seed-heads of the host plant.
Hibernation and pupation within a dead stem of the host plant. Infected stems are recognizable by the yellowish frass that is ejected at the nodes.
The adults occasionally come to light.
The adults fly from the end of June till early September. Most specimens have been observed in July.