The larva first makes a lower-surface epidermal corridor. Next the
larva begins to feed on the sponge parenchyma, subsequently also
the palissade parenchyhma; the initial corridor becomes obliterated.
The final mine is full depth, occupies half of a leaf, at one side
of the midrib, and is almost flat. The upperside turns orange brown.
Finally the larva vacates its mine and spins a new leaf into a pod,
that is eaten from the inside. If needed another leaf is treated
the same way (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, head light brown. Prothoracic shield pale green with
four transverse blackish spots (Emmet et al., 1985a) (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
Descirbed by Patocka, (2001b), Patocka and Turcani (2005a) (Bladmineerders van Europa).
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: Currently unknown.
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including West Sutherland
Gateway). The only known host has a northern
distribution. See also British
leafminers distribution map
NBN Grid Map:
elsewhere: Continental Europe including Austria, French mainland,
Germany, Italian mainland and Switzerland (Karsholt and van Nieukerken
in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: