Hawthorn Sawfly - Trichiosoma tibiale


Adult sawfly is an impressive bee-like brown insect with clubbed antennae.

Similar Species

Trichiosoma lucorum is very similar and males cannot be distinguished from T. tibiale, a species which feeds mainly on Birch. There is currently much taxonomic confusion about this genus.

Identification difficulty
Recording advice

This species has a red ID rating and unless identified by a known expert you must provide a satisfactory explanation of how it was identified for the record to be accepted.


Hedgerows containing Hawthorn, though it is known to feed on other host plants as well.

When to see it

Adult May to July

Life History

The powdery white appearance of the larvae is caused by a waxy secretion that they produce at some points in their life. They are unusual amongst sawflies as their cocoons are exposed on twigs and these are sometimes quite easy to spot, especially in the winter.

UK Status

Occasional with distribution being mainly in the west of England.

VC55 Status

Seems to be uncommon in Leicestershire and Rutland.

Leicestershire & Rutland Map


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

UK Map