Cytisogaster chambersi (Benson, 1947)

Cytisogaster chambersi

One of three small species formerly included in the Rhogogaster picta group. All three have bicolorous blue-green/black stigma. This species has both males and females. The hind tibia are lined with black on the anterio-dorsal face. Facial markings and saw teeth are diagnostic (see Benson). Most of the stigma is pale.

Size: 6 - 8.5mm

Status: Widely distributed

Distribution: England, Scotland, Wales

Flight period: May to July

Plant associations: Linum catharticum (fairy flax)


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.