The larval mine is a long gallery with linear black frass to
begin with, subsequently neatly scattered, and finally more central
and irregular. The egg is usually laid on the underside of the leaf
Forms a long, relatively wide mine. The frass is initially in a thin central line, but later may vary from a thin central line to frass almost filling the mine (British
at the underside of the leaf. The mine is a remarkably long, not
very slender corridor. Frass line of inconstant width, mostly occupying
more than half the width of the gallery (Bladmineerders van Europa).
It is recommended that you try to rear out the adults to be certain of their identity.
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 brown (Borkowski, 1972b; Gustafsson and van Nieukerken (1990a).
Abdomen 9 with two pairs of setae (other species, as far as known,
having three pairs) (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 not illustrated by the Lepidoptera Dissection
Hosts in Great Britain & Ireland:
of year - larvae: July to September (UKMoths).
of year - adults: Thought to be only a single extended generation,
adults in May and June (UKMoths).
in Great Britain & Ireland: Britain including Berkshire (VC22),
East Kent (VC15), East Norfolk (VC27), East Ross (VC106), East Suffolk (VC25), East Sutherland (VC107),
Glamorganshire (VC41), Huntingdonshire (VC31), North Aberdeenshire (VC93), North Devon (VC4), North Essex (VC19),
Shropshire (VC40), South Aberdeenshire (VC92), South Essex (VC18), South Hampshire (VC11), South Wiltshire (VC8), Staffordshire (VC39), West Norfolk (VC28), West Ross, West Suffolk (VC26), West
Sutherland and Worcestershire (VC37) (NBN
Gateway). See also British
leafminers distribution map.
doubtfully recorded in the Republic of Ireland (Karsholt and van
Nieukerken in Fauna Europaea). See also Ireland's NBDC interactive map.
NBN Grid Map:
elsewhere: Widespread in continental Europe including Danish
mainland, Finland, French mainland, Germany, Greek mainland, Hungary,
Italian mainland, Latvia, Norwegian mainland, Slovakia, 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.