Season (Adult / Immature):
National Status: Local
Local Status: Rare and very local resident.
Local Record: Grade 4 adult, 4 leaf-mine See here for explanation
|Year first recorded||1859||1976||1883|
|Year last recorded||1883||2002||2014|
|Number of records||2||5||4|
|Number of individuals||0||2||1|
For the county, we have a total of 11 records from 10 sites. First recorded in 1859.
Most records are of leaf-mines.
2013 (CHF): Mines are local on alder but this species may be under-recorded because of confusion between the two alder-mining species of Stigmella. See the comments under the previous species (Stigmella glutinosae) for separation of these two tricky species. The egg is laid on the underside of the leaf and the mine is a long slender corridor often following a vein or the margin of the leaf. The frass is typically in a continuous central line that is never wider than a third of the width of the corridor. The frass is not (never?) coiled. There is usually only one mine in a leaf. The larva does not have a distinct dark spot on the prothorax.