Last modified: Feb. 19, 2021, 12:38 p.m.
A very rare species in Belgium. Distribution per province insufficiently known due to the difficult recognition of the mine, most likely more common.
The mine is an irregular gallery that is shorter and broader than the mine of Stigmella microtheriella. In the first part of the mine the frass fills the gallery allmost completely, further on it's less densly scattered leaving clear margins.
See also bladmineerders.be
The cocoon is white to pale yellow.
On the underside of the leaf, usually in an angle against the midrib.
Two generations a year: adults are on the wing in May and again in July and August.
Monophagous on Carpinus betulus.