Athalia cordata Sawfly 2013-09-17

Athalia cordata Sawfly 2013-09-17

Observation - Athalia cordata Sawfly 2013-09-17 - UK and Ireland. Description: Thought this was a turnip sawfly but thorax is all black whereas turnip sawfly is normally black/yellow. Also, striped rear tarsi. So this is closely related Athalia cordata, not sure if this has a common English name?

Thought this was a turnip sawfly but thorax is all black whereas turnip sawfly is normally black/yellow. Also, striped rear tarsi. So this is closely related Athalia cordata, not sure if this has a common English name?