Season (Adult / Immature):
National Status: Local
Local Status: Rare and very local resident.
Local Record: Grade 4 See here for explanation
Flight time: Jun.
Foodplant: Hart's-tongue fern. Initially mines fronds, before producing larval case.
|Year first recorded||1856||2012||1859|
|Year last recorded||2012||2015||1859|
|Number of records||11||2||1|
|Number of individuals||10||0||0|
For the county, we have a total of 14 records from 8 sites. First recorded in 1856.
Sutton & Beaumont, 1989:
VC62. Near Whitby, larvae mining the leaves of hart's-tongue fern ('Scolopendrium vulgare'), December 1856 by Mr Braim (Stainton, 1858b).
2013 (CHF): After a gap of 150 years, this species was refound in the north-east of VC62 in 2009 and there have been several subsequent records. It has also been found in VC64. All records have been of mines in hart's-tongue fern though it will also use other fern species at times. The larvae initially mines the frond but is more often located after hibernation when it mines the sporangia under the leaf, making what looks like an untidy "displaced" sporangium. The black head of the larva distinguishes this species from Psychiodes filicivora.