Harvestmen of Britain & Ireland

There are some 30 different species of harvestmen (Opiliones) in the UK. This interactive guide is a resource for anyone who wants to identify a harvestman and/or learn about the features that can be used to separate the different taxa in the field. All the interactive tools on this web application are provided by the FSC Identikit. There are species accounts, that concentrate on features useful in field ID, a side-by-side comparison tool and a multi-access key (with three different visualisation methods).
Richards, P & Burkmar, R.
Available as: 
harvestmen harvestman opiliones arachnid fsc identikit