Last modified: Feb. 11, 2022, 2:49 p.m.
A very rare species in Belgium, distribution insufficiently known due to the difficulty with Ocnerostoma friesei.
Distribution is based only on individuals that have been checked for genitalia.
To reliably separate Ocnerostoma piniariella from Ocnerostoma friesei, it is usually necessary to refer to dissection of the genitalia, although Ocnerostoma friesei has grey antennae, compared to the present species which has whitish or grey antennae with white rings.
Forewing of male uniformly whitish grey, except for some white scaling at apex and costa, female greyish white suffused white, but almost entirely white at apex.
See also bladmineerders.be
This species is believed to fly in one generation a year, with the main flight time from the end of May towards July.