Rhogogaster punctulata - Twin-spotted Carver

Recorded widely throughout most of mainland Britain (Musgrove, 2023).

Superficially very similar to the other Rhogogaster species. However, this species can be readily distinguished from the others. On the head, the black markings that enclose the ocelli are open at the front to form a ω-shape rather than a figure of eight. The tergites are mainly green with two black spots laterally. These dots are sometimes fused and rarely absent. The tarsal pulvilli are very small in both sexes being about one-fifth the length of the next tarsal segment.

Rhogogaster punctulata larvae feed on a broad range of trees.

Jump to other Rhogogaster species

Size: 10 - 12mm

GB IUCN Status: Least Concern
GB Rarity Status: None

Distribution: England, Scotland, Wales

Flight period: May to July

Plant associations: Polyphagous. Alnus spp., Betula spp., Corylus spp., Fraxinus spp., Prunus spp., Rosa spp., Salix spp. and Sorbus spp. (a wide variety of trees)

References:

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 Natural England, unpublished