Makes long narrow galleries. The frass is distributed through the
mine and also some is ejected. The larvae may mine more than one
rather irregular blotch. Most frass is ejected, what remains is
concentrated in a few heaps. The larva makes several mines. Pupaton
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).
Head flattened, blackish brown with U-shaped marking. Body yellow, ventrally a light brown, more or less oblong, spot on each segment; prothoracic plate dark brown and divided into two irregular parts; anal plate almost colourless; thoracic legs very light brown (Koster, 2002c) (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. The male genitalia, but not the female genitalia (check for update), are illustrated by the Lepidoptera
Festuca arundinacea is
treated as Schedonorus
arundinacea (Tall Fescue) by Stace (2010).
Hosts in Great Britain & Ireland:
of year - larvae: August-May (British
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including Cambridgeshire (VC29),
East Suffolk (VC25), Herefordshire (VC36), North Hampshire (VC12), Pembrokeshire and
South Wiltshire (NBN
Gateway). Prefers damp humid habitats eg woodland, fens etc
See also British
leafminers distribution map.
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,
Belarus, Bulgaria, Croatia, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Hungary, Italian mainland, Latvia, Lithuania,
Poland, Romania, Russia - East, Northwest and South, Slovakia, Spanish
mainland, Sweden, Switzerland, Ukraine and ? Yugoslavia (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.