Leaf-miner and case-bearer: A straw-coloured, slender, three-valved tubular silken case, about 10 mm long. Mouth angle 45° to 60°. Perhaps because of the plant's dense felt cover, the case is attached with much silk, giving the holes a conspicuous white margin (Bladmineerders van Europa).

Larva: The larva is illustrated in (Bladmineerders van Europa).

Pupa: Details unknown.

Adult: The adult is illustrated in UKMoths. The male and female genitalia are illustrated by the Lepidoptera Dissection Group.

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: August until June of the following year (Bladmineerders van Europa).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Widespread in Britain including Bedfordshire, Cambridgeshire, East Suffolk, Kincardine, North Essex, North Hampshire, Pembrokeshire, South Essex, South Wiltshire, Surrey, West Norfolk, West Suffolk and Worcestershire (NBN Gateway - N.B. includes Watsonian Vice Counties having publicly available records that fall within or overlap the vice county border at 10km resolution or better i.e. a record for a vice county may relate to an adjacent vice county - for included datasets see NBN Grid map below).

Also recorded in the Republic of Ireland (Karsholt and van Nieukerken in Fauna Europaea).

NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.

Distribution elsewhere: Widespread in continental Europe including Albania, Austria, Belgium, Croatia, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Lithuania, Norwegian mainland, Poland, Romania, Russia - Central and North, Sardinia, Slovakia, Slovenia, Spanish mainland, Sweden, Switzerland and The Netherlands. Also recorded in East Palaearctic (Karsholt and van Nieukerken in Fauna Europaea).

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: Unknown.