and case-bearer: The larva forms a case, approximately 11-12 mm long, beneath a thistle
leaf, although burdock may sometimes be used. The shape of the ochreous
case varies as, when being enlarged, it is elongated first, and
the girth increased subsequently (UKMoths).
to light grey tubular silken case with darker length lines. The
case is fairly large (up to 17 mm) and very slender. The rear end
is three-valved, the mouth angle about 50°. The larva feeds
at the underside of the leaf (Bladmineerders van Europa).
mine is also illustrated in British
Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples).
The larva is illustrated in Bladmineerders van Europa.
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The adult is illustrated in UKMoths.
genitalia are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae: Feeding takes place July - September, and
most larvae diapause full fed until pupation in May. Some larvae
complete feeding in April (UKMoths).
August to October (British
of year - adults: The adults fly in June and July (UKMoths).
in Great Britain & Ireland: The moth is often common in
habitats where its foodplants occur, and is distributed throughout
England, Wales and southern Scotland (UKMoths)
including including Anglesey (VC52), Bedfordshire (VC30), Caernarvonshire (VC49), Cambridgeshire (VC29),
Denbighshire (VC50), Derbyshire (VC57), East Gloucestershire (VC33), East Suffolk (VC25), Glamorganshire (VC41),
Huntingdonshire (VC31), Kincardineshire (VC91), Leicestershire (VC55), Middlesex (VC21), North Essex (VC19),
North Hampshire (VC12), North Somerset (VC6), North Wiltshire (VC7), Nottinghamshire (VC56),
Shropshire (VC40), South Lancashire (VC59), South Wiltshire (VC8), South-west Yorkshire (VC63),
Staffordshire (VC39), Surrey (VC17), Warwickshire (VC38), West Gloucestershire (VC34), West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
Gateway) and the Channel Is. (Karsholt and van Nieukerken
in Fauna Europaea).
recorded in the Republic of Ireland (Karsholt and van Nieukerken
in Fauna Europaea). See also Ireland's NBDC interactive map.
NBN Grid Map:
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elsewhere: Widespread in continental Europe including Belgium,
Bulgaria, Czech Republic, Danish mainland, Estonia, Finland, French
mainland, Germany, Greek mainland, Hungary, Italian mainland, Latvia,
Lithuania, Norwegian mainland, Poland, Romania, Russia - Central
and South, Slovakia, Spanish mainland, Sweden, The Netherlands and
Ukraine. Also recorded from Near East (Karsholt and van Nieukerken
in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Currently unknown.