Season (Adult / Immature):
National Status: Local
Local Status: Rare and very local resident.
Local Record: Grade 4 adult, 3 leaf-mine See here for explanation
|Year first recorded||2009||1978||2012|
|Year last recorded||2009||2011||2012|
|Number of records||2||3||1|
|Number of individuals||4||1||0|
For the county, we have a total of 6 records from 6 sites. First recorded in 1978.
2013 (CHF): The first county record was from Maitland Emmett in 1978 and leaf mines on rowan have been found in scattered areas across the county since then. This is a much less common species than Stigmella nylandriella on rowan but the mines are usually fairly distinctive. The corridor is narrow from start to end, and compressed into a small space, often along a major vein. The frass is in a narrow, regularly interrupted central line leaving clear edges. In thick leaves the frass line is broader, and the corridor is shorter. The mine can sometimes follow the leaf edge in the manner of nylandriella.