Arge melanochra

Description

Length: 7 to 8 mm. Orange bodied with a black head and thorax. The dark wing stigma doesn't extend across all of the wing and is more spot-like. Legs are yellow with a dark band at the apices, except the hind femora which are all black..

Similar Species

Superficially similar to the Bramble Sawfly, Arge cyanocrocea, but in this species the dark stigma is larger and creates a band across both wings, also the hind femora usually have some yellow at the base.

Identification difficulty
ID checklist (your specimen should have all of these features)
  • long final antennal segment
  • orange abdomen
  • black thorax
  • clear intercostal
  • hind femora are all black
  • hind tibiae are yellow with an apical black band
Recording advice

Check that the intercostal is clear and the hind femora are all black.

Habitat

Found in areas where Hawthorn is present.

When to see it

Summer.

Life History

Associated with Hawthorn.

UK Status

Infrequent and local in Britain and with a very southerly distribution.

VC55 Status

Rare in Leicestershire and Rutland. The Leire record of 8th July 2012 is the first record for VC55.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Species group:
Sawflies
Kingdom:
Animalia
Order:
Hymenoptera
Family:
Argidae
Records on NatureSpot:
21
First record:
08/07/2012 (Calow, Graham)
Last record:
23/06/2025 (Helen O'Brien)

Total records by month

% of records within its species group

10km squares with records

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