During my identification and learning process (never ends!) I took photos of the bits of wasp specimens which were alluded to in the key(s), mostly first and last below, to help me understand what was meant:
Yeo P.F. & Corbett S.A. 1983 Solitary Wasps. Naturalist's Handbooks 3 CUP
Richards O.W. 1980 Scolioidea, Vespoidea and Sphecoidea RES.
and worth every penny for the clear illustrations and descriptions:
Lomholdt O. 1984 The Sphecidae (Hymenoptera) of Fennoscandia and Denmark. Brill (publisher, not a comment on how good I think it is!)
Discovered as new to Britain in 2017 by David Notton and Hannah Norman. The discovery was made from a specimen collected in a garden in Lewisham in May 2017. Subsequently a small number of specimens from southern England have been identified, dating back to 1802. Full details are given in: Notton, D.G. and Norman, H., 2017.
The UK Pollinator Monitoring Scheme (PoMS) continues in 2018
The UK Pollinator Monitoring Scheme (PoMS) has been set up to gather additional evidence to inform research and conservation of the insects that provide such an important service. BWARS is supporting PoMS, which is a partnership of a wide range of conservation and research organisations.
Bombus lapidarius Photo: CEH/Martin Harvey
PoMS is part of the UK Pollinator Monitoring and Research Partnership, co-ordinated by the Centre for Ecology & Hydrology (CEH). It is jointly funded by Defra, the Welsh and Scottish Governments, JNCC and project partners, including CEH, the Bumblebee Conservation Trust, Butterfly Conservation, British Trust for Ornithology, Hymettus, the University of Reading and University of Leeds. PoMS aims to provide much-needed data on the state of the UK’s insect pollinators, especially wild bees and hoverflies, and the role they fulfil in supporting farming and wildlife. Defra project BE0125/ NEC06214: Establishing a UK Pollinator Monitoring and Research Partnership.