| Kilde | Nøgle til … | Links | Sprog |
|---|---|---|---|
| Artsfakta.se | Mange arter af dyr og planter | Alle nøgler | Svensk |
| Natural History Museum | Ichneumonidae | Beginner’s guide to identifying British ichneumonids | Engelsk |
| Natural History Museum | Tenthredo | Beginner’s guide to identifying British Tenthredo | Engelsk |
| Zookeys | Guldhvepse | An illustrated key to the cuckoo wasps (Hymenoptera, Chrysididae) of the Nordic and Baltic countries, with description of a new species | Engelsk |
| Rhian Rowson og Mark Pavett | Keglebier | A visual guide for the identification og British Coelioxys Bees | Engelsk |