Posted by Tony Irwin on 20-02-2020 13:36
#5
No on-line key that I know of, but Freeman's 1993 Royal Ent. Soc. Handbook (a bit out of date, but still useful - there have been lots of species added new to Britain since) is available for only £2.00 from the RES - see:
https://www.royen...-sciaridae