and case-bearer: The fully developed 4 mm to 5 mm case is made
of seven to ten mined heather leaves arranged in a neat herring-bone
pattern. The cases closely resemble sprigs of heather and are best
found by placing swept debris in a box, where the larvae will reveal
themselves by climbing the sides (UKMoths).
small (c. 4 mm) light brown lobe case with a mouth angle of about
40°. The case is composed of 8-10 small leaf fragments, placed
in herringbone manner, giving the case the appearance of a small
browned ling branchlet (Bladmineerders van Europa).
case is also illustrated in British
leafminers and UKMoths.
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).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The adult is not illustrated in UKMoths (check for update). The male genitalia, but not the female genitalia (check for update), are illustrated by the Lepidoptera
Hosts in Great Britain & Ireland:
of year - larvae: September to April (British
of year - adults: Late June and July in afternoon sun over heather
on heaths, moors and occasionally gardens (UKMoths).
in Great Britain & Ireland: Most parts of Britain (UKMoths)
including Banffshire (VC94), Bedfordshire (VC30), Caernarvonshire (VC49), Cheshire (VC58), Denbighshire (VC50),
Derbyshire (VC57), East Kent (VC15), East Norfolk (VC27), East Ross (VC106), East Suffolk (VC25), Flintshire (VC51),
Glamorganshire (VC41), Herefordshire (VC36), Kincardineshire (VC91), South Aberdeenshire (VC92), Staffordshire (VC39),
Surrey (VC17), West Gloucestershire (VC34), Westmorland (VC69) and Worcestershire (VC37) (NBN
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 Austria,
Belgium, Czech Republic, Danish mainland, Estonia, Finland, French
mainland, Germany, Greek mainland, Hungary, Italian mainland, Latvia,
Norwegian mainland, Poland, Portuguese mainland, Slovakia, Spanish
mainland, Sweden, Switzerland and The Netherlands (Karsholt and
van Nieukerken in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: