This wasp is very much like the Common Wasp (Vespula vulgaris) and the German Wasp (Vespula germanica), except it has a clear yellow face with usually a single black dot. It only has two yellow spots on the rear of the thorax. It grows up to 18mm long.
Seen May to August in hedgerows and meadows. Locally common but widespread.
Photographs of Tree Wasp (Dolichovespula saxonica), taken October 2016, rear garden, Staffordshire. © Pete Hillman 2016. Camera used Nikon D7200, with Nikon 18-55mm lens.