Last modified: Feb. 23, 2022, 6:54 p.m.
A common species throughout Belgium.
The largest species within the genus. Wingspan 18–22 mm. Forewings pale ochreous, light straw-yellow, with more or less strong reticulation. Tornus spot absent. Antennae solid white for the most part of it, not ringed, underside darkly dotted. Head light ochreous-yellow.
Skin ivory, transparent with internal organs visible; head black; thoracic plates dark brown.
10–14 mm; constructed from four to six crescent-like leaf particles.
Eggs are oviposited in the stems of a variety of lower plants. First instars remain inside the stem and only later drop to the ground where they construct their first case. The more mature larva lives in a bivalved case on the ground, feeding on dead leaves and detritus. It hibernates twice and pupates inside the case before the second hibernation.
The adult moths are active in late afternoon and at dusk.
The adults fly in one generation a year from mid-April till early June.
A great variety of forests in different kind of habitats, from warm and dry deciduous forests to cool pine forests.