The mine begins as a narrow corridor, somewhere halfway along the
leaf; it ascends towards the tip, doubles, and descends to about
the starting point. Meanwhile the corridor has widened to about
half the width of the leaf. Most frass is accumulated as an elongate
dark mass in the oldest part of the mine. According to Traugott-Olsen
and Nielsen part of the frass can be ejected through an opening
in the lowest part of the mine. The mine is greenish white and quite
conspicuous. Pupation external; pupa in a loose spinning (Bland,
1996a; Traugott-Olsen and Nielsen, 1977a) (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).Pale greenish yellow with an indistinct dorsal line; head pale yellow,
mouth parts darker. The eye patch consist of several facets (contrary
to Eutomostethus luteiventris) (Bladmineerders van Europa).
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 and female genitalia are illustrated by the Lepidoptera
Hosts in Great Britain & Ireland:
of year - larvae:
March-May (Bladmineerders van Europa).
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including Anglesey (VC52),
Caernarvonshire (VC49), Denbighshire (VC50), East Suffolk (VC25), Flintshire and South
Gateway, as Biselachista scirpi) 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:
scirpi, as Biselachista scirpi
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elsewhere: Widespread in continental Europe including Austria,
Belgium, Danish mainland, Finland, Germany, Hungary, Italian mainland,
Norwegian mainland, Portuguese mainland, Romania, Sardinia, Sicily,
Sweden 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: Currently unknown.