It is not possible to definitively distinguish this species from other Parornix and Deltaornix species without genital dissection.
The larvae produce a mine which is very similar to Deltaornix torquillella. A gallery leads to a grey/white blotch. The larvae then produce two or more leaf folds. The larvae are grey with black rings on legs.
Recorded in 61 (22.6%) of the 270 2km squares of Huntingdonshire.
Last recorded in August 2019
Recorded date range (Adult): 01 April to 09 September
Recorded date range (Larva/Leafmine): 22 June to 14 November