miner: Oviposition at the underside of a thick vein. From this point the
larva makes a corridor that quickly widens into a full depth blotch,
mostly in the distal half of the leaf. Frass initially in a central
line, further on in scattered lumps (Bladmineerders van Europa).
is normally one mine per leaf (British
The larvae of sawflies have a head capsule, chewing mouthparts with opposable mandibles, six thoracic legs and abdominal legs (although they may be reduced) (see examples).
Shaped like a normal caterpillar, not much flattened, with a globular head and the mouth directed vertically (Bladmineerders van Europa).
The pupae of sawflies have visible head appendages, wings and legs which lie in sheaths.
Pupation outside the mine (Bladmineerders van Europa).
The adult is illustrated in ECatSym - Electronic World Catalog of Symphyta.
Hosts in Great Britain & Ireland:
of year - larvae: April-May (British
of year - adults: Females emerge from the end of March to the
middle of April (depending on weather conditions) (British
Full synonymy and references are listed in ECatSym - Electronic World Catalog of Symphyta.
in Great Britain & Ireland: Currently unknown.
NBN Grid Map:
Distribution elsewhere: Widespread in continental Europe including Estonia, Finland, Germany, Latvia,
Poland, Romania and Sweden (van Achterberg in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: