A fairly large lemon-yellow and black sawfly similar to several other related species. (Males of Tenthredo arcuata, brevicornis, notha & schaefferi cannot be separated).

Flower rich grassland, especially where umbellifers are present.

June to September.

Adults are nectar feeders usually found on umbellifer flowers.

Widespread in the southern half of Britain.

Uncommon or under recorded in Leicestershire and Rutland.

https://www.sawflies.org.uk/tenthredo-brevicornis/