Hemichroa australis


Adult Hemichroa australis can reach a length of about 7 to 8 mm. The adult sawfly is largely back with an orange head and thorax. The larvae feed on the leaves of Birch and Alder. When feeding, young larvae make holes in characteristic curved or angled lines in the leaves, whereas larger larvae feed on leaf edges.

Identification difficulty

Associated with Alder and Birch.

When to see it

Feeding larvae can be encountered when the host species are in leaf

Life History

Associated with Birch and Alder.

UK Status

Widespread in England and Wales but true status is difficult to determine due to lack of records.

VC55 Status

Uncommon or under recorded in Leicestershire and Rutland. The Dunton Gorse record of 6th September 2017 may be the first for VC55.

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Leicestershire & Rutland Map


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

UK Map