Metallus albipes

Description

The larva of the sawfly Metallus albipes mines the leaves of Raspberry, producing a large, almost full depth blotch with scattered frass. The mine is identical to that of M. pumilus, but the larva is different so it can be identified to species if the larva is present.

Similar Species

The mine of Metallus pumilus is similar but the larva of this species has three ventral spots, whereas M.albipes has two (as shown).

Identification difficulty

Adult Leafmine (only with larva present)  

Recording advice

Adult: Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Leafmine: Records of the leafmine must include a backlit images of the mine to show the frass, and also dorsal and ventral views of the larva. Please state the host plant when submitting a leafmine record.

Habitat

Anywhere that Raspberry plants occur. Found on wild and cultivated Raspberry, preferring shaded situations.

When to see it

Larval mine can be seen when Raspberry is in leaf, usually in early autumn.

UK Status

True status in Britain is difficult to determine due to lack of records, but it would appear to be fairly widespread in England.

VC55 Status

Status in Leicestershire and Rutland not known.

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Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map