Morris, M.G., 1997
Broad-Nosed Weevils (Entiminae)
Dichotomous key with species entries describing gender differences, ecology, plant associations, frequency and distribution.
||The Royal Entomological Society of London (RES)
||Vol 5, Part 17a
||0 901546 79 8
||Covers all UK species known at the time.
||Half-tone drawings of whole animals and line drawings of diagnostic features, all at the back of the book.
||Under a Stereo Microscope.
||Mounted (carded) or pinned specimen.
||Mostly straightforward. Sitona become much easier once you realise that 90% of your finds are S. Regensteinensis; the others do look different.