Benson, R.B., 1952
Hymenoptera: 2. Symphyta. Section (b)
Dichotomous key to sawflies of the family Tenthredinidiae except subfamily Nematinae (part c). This contains most of the brightly coloured species seen at flowers. A supplement in part c contains corrections.
Can be downloaded from the Royal Entomological Society's website.
||The Royal Entomological Society of London (RES)
||Vol VI, Part 2(b)
|Comments and Corrigenda
||There's a list of additional species added since Benson's keys in Adam Wright's AIDGAP key (p536-7)
Tenthredopsis and Macrophya have since been revised and new species added.
||Covers all UK species known at the time.
||Line drawings in text.
||Under a Stereo Microscope.
||Pinned specimens, females preferably set with saw everted.