Season (Adult / Immature):
National Status: Local
Local Status: Very rare and very local resident.
Local Record: Grade 4 See here for explanation
Flight time: May-Jun.
Foodplant: Hart's-tongue Fern.
|Year first recorded||2009||2010|
|Year last recorded||2014||2014|
|Number of records||7||6|
|Number of individuals||77||8|
For the county, we have a total of 13 records from 10 sites. First recorded in 2009.
Argus 58, 2009:
VC63. Skircoat Green, Halifax, larva on hart's tongue fern 26.2.2009 (CS). NEW COUNTY RECORD.
Current status (HEB, 2011): First noticed in Britain in 1909 although there was no published record until 1940, it had probably been introduced with ferns from Asia. By the 1980s it had a mainly maritime distribution in southern and western England and in Ireland. More recently there have been a number of inland and more easterly records resulting in the first Yorkshire occurrence of larvae on hart’s tongue fern at Skircoat Green, Halifax (VC63) in 2009. It is likely to be found more widely in the future.
2013 (CHF): There has been further spread throughout VC64 this year. Unlike the previous species, this moth is continuously brooded and larvae can be found in any month of the year. The mines can be found on various species of fern, often as a displaced sporangium, but most records are from hart's tongue fern. The pale brown head and prothoracic shield of the larva are quite different from the black head of Psychoides verhuella.