Athalia lugens - Shady Tigress
Recorded widely across all of mainland Britain except northernmost Scotland (Musgrove, 2023).
Athalia lugens has all tibia ringed apically with black but with darkening on at least the hind tibiae and tarsi. In paler specimens, at least two thirds of the length of the hind tibiae is lightly infuscate and in darker examples all tibiae and tarsi may be entirely dark on the outer face. The entire scutum is black but the pronotum, sides and underside of the thorax are orangy.
Larvae feed on cruciferous plants and are more frequent in damp places.
GB IUCN Status: Least Concern
GB Rarity Status: None
Distribution: England, Scotland, Wales, Ireland
Flight period: May to September
Plant associations: Cruciferae including Lepidium (Pepperworts), Raphanus (Radishes), Sinapis (Mustards)
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
Musgrove, A.J. 2023. A review of the status of sawflies of Great Britain - Phase 2: The Athaliidae and the Tenthredinidae (excluding Nematinae). Natural England, unpublished