Leaf-miner: The larvae create a distinctive blotch mine in the leaves of
apple (Malus ). The larva
cuts an exit hole on the underside of the leaf, which distuingishes
the mine from that of Ectoedemia
either at upperside or underside of the leaf, close to the leaf
margin. The mine begins as a narrow corridor which is strongly contorted,
unless it lies close to the leaf margin. The corridor abruptly widens
into an elongate blotch, that often runs over the initial corridor.
The frass is brown; it almost fills the initial corridor; in the
blotch it is concentrated in its first section. Pupation external;
exit slit invariably in the lower epidermis. In Ectoedemia
atricollis, of which the mine bears some resemblance to
the one of pulverosella the exit slit is in the upper epidermis;
moreover, atricollis is much later in the year (Bladmineerders van Europa).
gallery leads to large brownish blotch (British
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).
yellow, head pale brown (British
leafminers). Yellow (Emmet, 1983a); Gustafsson and van Nieukerken
(1990a) give a description of the larva (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 genitalia are not illustrated by the Lepidoptera Dissection
Group (check for update).
Hosts in Great Britain & Ireland:
of year - larvae: June and July (UKMoths;
of year - adults: May (UKMoths).
in Great Britain & Ireland: Fairly well distributed in the
British Isles, including Bedfordshire (VC30), Breconshire (VC42), Cambridgeshire (VC29), Cheshire (VC58),
Derbyshire (VC57), East Kent (VC15), East Norfolk (VC27), East Suffolk (VC25), Forfar, Glamorganshire (VC41),
Herefordshire (VC36), Kincardineshire (VC91), North Aberdeenshire (VC93), North Devon (VC4), North Essex (VC19),
North Hampshire (VC12), North Somerset (VC6), Shropshire (VC40), South Aberdeenshire (VC92), South Lancashire (VC59), South Wiltshire (VC8), Staffordshire (VC39), West Gloucestershire (VC34), West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
Gateway) and Ireland
(Karsholt and van Nieukerken in Fauna Europaea).
See also British
leafminers distribution map.
Also recorded in the Republic of Ireland (Ireland's NBDC interactive map).
NBN Grid Map:
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elsewhere: Widespread in continental Europe including Austria,
Bulgaria, Croatia, Czech Republic, Danish mainland, Estonia, Finland,
Germany, Hungary, Latvia, Lithuania, Norwegian mainland, Poland,
Russia - Central and Northwest, Slovakia, Slovenia, 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: