miner: The mine begins with short, rather broad corridor, that often is
overrun by the later, large, very transparent full depth blotch.
The mine begins somewhere in the centre of the leaf. Frass in many
loose grains (Bladmineerders van Europa).
mine is also illustrated in 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).
The pale larva is illustrated in British
leafminers and Bladmineerders van Europa.
The pupae of sawflies have visible head appendages, wings and legs which lie in sheaths.
Outside the mine (British
The adult is illustrated in ECatSym - Electronic World Catalog of Symphyta.
Hosts in Great Britain & Ireland:
of year - larvae: Bivoltine: summer and early autumn (British
of year - adults: Currently unknown.
Full synonymy and references are listed in ECatSym - Electronic World Catalog of Symphyta.
See (British Leafminers Newsletter) for a A Guide to the British Metallus species.
in Great Britain & Ireland: Local (British
leafminers). Britain including North Wiltshire (NBN
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elsewhere: Widespread in continental Europe including Austria,
Belgium, Bulgaria, Czech Republic, Estonia, Finland, French mainland,
Germany, Hungary, Latvia, Poland, Romania, Russia - East, Slovakia,
Sweden, and Ukraine. Also recorded in the Nearctic region (van Achterberg
in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: Unknown.