larva mines from the grass tip downwards and the mine occupies half
or the whole of the leaf blade width. A whitish blotch is formed
with characteristic narrow streaks of frass (British
depth blotch, slightly inflated, descending from the leaf tip, occupying
half or the entire width of the blade. The larva may move and make
a new mine elsewhere. In the latter case the mines are fairly short;
otherwise an entire blade may be mined out. Frass in a some narrow
greyish brown streaks. Pupation outside the mine (Bladmineerders van Europa).
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 British
and ? Bladmineerders van Europa.
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The pupa is illustrated in UKMoths.
The adult is illustrated in UKMoths.
and female genitalia are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae: September - May (British
of year - adults: The adults fly in a single generation during
June and July (UKMoths).
in Great Britain & Ireland: A common miner of grasslands
throughout the UK (British
including Anglesey (VC52), Banffshire (VC94), Bedfordshire (VC30), Caernarvonshire (VC49), Cambridgeshire (VC29),
Cheshire (VC58), Denbighshire (VC50), Derbyshire (VC57), East Cornwall (VC2), East Kent (VC15), East Norfolk (VC27), East Suffolk (VC25), Easterness (VC96), Elgin, Flintshire (VC51), Glamorganshire (VC41),
Herefordshire (VC36), Hertfordshire (VC20), Kincardineshire (VC91), Merionethshire (VC48), Mid-west Yorkshire (VC64), North Aberdeenshire (VC93), North Ebudes (VC104), North Hampshire (VC12), North Somerset (VC6), North Wiltshire (VC7), Pembrokeshire (VC45), Shropshire (VC40), South Aberdeenshire (VC92),
South Devon (VC3), South Hampshire (VC11), South Lancashire (VC59), South Wiltshire (VC8),
Staffordshire (VC39), Surrey (VC17), Warwickshire (VC38), West Cornwall (VC1), West Kent (VC16), West Lancashire (VC60),
West Norfolk (VC28), West Suffolk (VC26), Westmorland (VC69) and Worcestershire (VC37) (NBN
See also British
leafminers distribution map.
recorded in the Republic of Ireland and Northern 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, Italian mainland, Latvia, Lithuania, Luxembourg, Norwegian
mainland, Poland, Romania, Russia - Central, East, North and Northwest,
Slovakia, 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: