Phylloecus niger - Black Bramble Stem-sawfly
Widespread but sparsely distributed north to Yorkshire, including in the south-west. Despite an increase in recorder effort in recent year the number of recent sightings has declined (Musgrove, 2022). Phylloecus niger can be separated from the other Phylloecus species by the head and pronotum being dulled by dense punctures. The pronotum is entirely black. Abdomen usually with only two tergites banded apically with yellow, the rest of the abdomen being black.
Phylloecus niger larvae inhabit the young canes of raspberries.
Size: 11 to 15mm.
GB IUCN Status: Vulnerable
GB Rarity Status: Nationally Scarce
Distribution: England, Wales
Flight period: April to June
Plant associations: Rubus spp. (brambles) including Rubus idaeus (raspberry).
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
Liston, A., 1995. Compendium of European Sawflies, Chalastos Forestry, Daibersdorf
Musgrove, A.J. 2022. A review of the status of sawflies of Great Britain - Phase 1: families other than Tenthredinidae. Natural England, unpublished