Leaf-miner and case-bearer: A slender straw coloured, three valved tubular silken case, about 10 mm long. Mouth angle about 30° (British leafminers).

A slender tubular silken case, about 10 mm long, straw coloured, three valved. Mouth angle about 30° (Bladmineerders van Europa).

Feeding traces are illustrated in the Encyclopedia of Life.

Larva: The larva is illustrated in Bladmineerders van Europa.

Coleophora folicularis larva, dorsal Image: Willem Ellis (Bladmineerders van Europa)

Pupa: Details unknown.

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

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: August to September, then May to June when on Inula. July to August, then April to May when on Eupatorium (British leafminers).

Time of year - adults: June to August (UKMoths).

Distribution in Great Britain and Ireland: Widespread in Britain including Anglesey, Bedfordshire, Cambridgeshire, Cheshire, Derbyshire, East Cornwall, East Norfolk, East Suffolk, Glamorgan, Herefordshire, North Devon, North Essex, North Hampshire, North Somerset, North Wiltshire, Pembrokeshire, Shropshire, South Devon, South Wiltshire, Stafford, Surrey, West Cornwall, West Gloucestershire, West Kent, West Norfolk and West Suffolk (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).

Prior to 1962 both C. follicularis and C. trochilella were thought to be a single species, C. troglodytella. Consequently, distribution is clouded by older records which are not attributed to one or other of the two species.

Also recorded in the Republic of Ireland (UKMoths and 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, Bulgaria, Croatia, Czech Republic, Danish mainland, Estonia, Finland, French mainland, Germany, Greek mainland, Hungary, Italian mainland, Latvia, North Aegean Is., Poland, Romania, Sicily, Slovakia, Spanish mainland, Sweden, Switzerland and The Netherlands. Also recorded in the Near East (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.