Last modified: April 20, 2022, 7:07 p.m.
A very rare species in Belgium, only known from a few locations in the Campine area.
Length 12–15 mm, width 2–5 mm; tubular, covered with plant fragments, lichens and grains of sand and soil.
The larva lives close to the ground. Its development takes one year.
The adult males live only 1 to 8 days, the wingless females up to one month. Males tend to fly in sunshine and on sunny mornings mainly between 9 am and 2 pm.
One generation a year: from late March towards late April.