Leaf-miner: A gallery with frass partly dispersed, but sometimes in a thin
line (as S. alnetella ).
The moths must be bred through to distinguish between this and S.alnetella (British
at the leaf underside. Then a full depth, fairly slender corridor,
often several in a leaf. Frass line very variable, sometimes coiled,
mostly more than on third of the width of the corridor. 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).
with a grey-brown patch on the prosternum (Johansson et al., 1990a).
The larva mines venter-upwards (Emmet, 1983a). Abdominal segment
1 ventrally not spinulose (Johansson et al., 1990a) (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
NThe 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: July, September - October (British
of year - adults: Currently unknown.
in Great Britain & Ireland: Widespread in Britain including
Bedfordshire (VC30), Caernarvonshire (VC49), Denbighshire (VC50), Derbyshire (VC57), East Cornwall (VC2),
East Kent (VC15), East Suffolk (VC25), East Sutherland (VC107), Glamorganshire (VC41), Herefordshire (VC36), Hertfordshire (VC20), Isle of Wight (VC10), Middlesex (VC21), Monmouthshire (VC35), North Essex (VC19),
North Hampshire (VC12), Shropshire (VC40), South Aberdeenshire (VC92), South Essex (VC18), South Hampshire (VC11), South Wiltshire (VC8), Staffordshire (VC39), Surrey (VC17), West Gloucestershire (VC34),
West Kent (VC16), West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
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,
Belgium, Corsica, Croatia, Czech Republic, Danish mainland, Estonia,
Finland, French mainland, Germany, Hungary, Italian mainland, Latvia,
Lithuania, Norwegian mainland, Poland, Portuguese mainland, Romania,
Russia - Central, Sardinia, Slovakia, Slovenia, Sweden, Switzerland,
The Netherlands, 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: