The larvae mine the stems of various coarse grasses (UKMoths;
in Pitkin & Plant, 2005).
The larva mines just a few days in the leaf, then continues as a stem borer on the lower part of the stem. They regularly move to a new stem. The central leaves of the infested plants wither and die (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).
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, but not the female genitalia (check for update), are illustrated by the Lepidoptera Dissection Group.
Hosts in Great Britain & Ireland:
of year - larvae: Currently unknown.
of year - adults: The adults appear between July and September,
and fly in the early afternoon sunshine (UKMoths).
in Great Britain & Ireland: Well-distributed throughout
England and Wales, but rather unobtrusive and probably overlooked
including Bedfordshire (VC30), Breconshire (VC42), Caernarvonshire (VC49), Cheshire (VC58), Derbyshire (VC57),
East Norfolk (VC27), East Suffolk (VC25), Glamorganshire (VC41), Leicestershire (VC55), Merionethshire (VC48),
Monmouthshire (VC35), North Somerset (VC6), Shropshire (VC40), South-east Yorkshire (VC61),
Staffordshire (VC39), Warwickshire (VC38), West Gloucestershire (VC34), West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
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 Albania,
Austria, Belarus, Belgium, Crete, Croatia, Czech Republic, Danish
mainland, Estonia, Finland, French mainland, Germany, Greek mainland,
Hungary, Italian mainland, Latvia, Poland, Romania,
Russia - Central, East, North, Northwest and South, Sicily, Slovakia,
Spanish mainland, Sweden, Switzerland, The Netherlands and Ukraine
(Karsholt and van Nieukerken in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: