All the tibiae are ringed apically with black and the thorax is orangy on the sides and ventrally. Athalia liberta males cannot be distinguished from Athalia cornubiae. In females the hypopygium is not deeply incised either side of the middle.
Larvae feed on hedge garlic, hairy bittercress and hedge mustard.
Status: Uncommon but widespread
Distribution: England, Scotland, Wales, Ireland
Flight period: May to August
Plant associations: Alliaria petiolata, Cardamine hirsuta and Sisymbrium officinale (hedge garlic, hairy bittercress and hedge mustard)
Balmer, D. and Balmer, J.P. 2015. Keys of species of Athalia in France and Italy, Flickr. [https://www.flickr.com/photos/d-jp-balmer/7996272718/in/photolist-9Ztf2g-dbAZi1-d8W2FW-9Zdz6n/] Accessed 16Apr2019
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Liston A, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168. https://doi.org/10.3897/BDJ.2.e1168