Last modified: June 12, 2021, 2:13 p.m.
Used to be a rare immigrant in the early days but is now a part of our local fauna. This areal expansion is probably due to a change of climate. Nowadays (2008) it is a fairly common species throughout Belgium.
Hibernates as a first instar larva and pupates in a cocoon underground. The adults come to light in small numbers and are easily attracted to sugar.
The adults fly in two generations a year from late May till beginning of November, but most specimens are observed during September.