Season (Adult / Immature):
National Status: Nationally Scarce B
Local Status: Very rare and very local resident.
Local Record: Grade 4 See here for explanation
Flight time: May-Jun.
|Year first recorded||1883|
|Year last recorded||2001|
|Number of records||4|
|Number of individuals||1|
For the county, we have a total of 4 records from 4 sites. First recorded in 1883.
Sutton & Beaumont, 1989: Local and rare, no recent record.
2013 (CHF): Very local in the county with few recent records. The adults are much plainer-looking than others of this genus as the name fuscatella suggests. The larvae form almost spherical galls in birch branches of 3-13 mm diameter, usually at a node. Often several adjacent nodes are affected. The larva hibernates in the mine. The presence of the larva within the gall is suggested by reddish-brown frass around the exit hole.