AIDGAP Caddis larvae identification guide
The AIDGAP Caddis larvae identification guide covers all caddis larvae found in Britain and Ireland.
Intended for use with living specimens in the field, larvae are keyed to species level where this is possible using features visible with a hand lens. Other larvae are keyed out to genus.
Caddis larvae are very familiar aquatic insects but only a few of the 198 British and Irish species feature in popular guides. The challenge for this AIDGAP identification guide was to produce keys that use features visible with a x10 hand lens, and enable identification to some level of accuracy for any caddis larva collected in Britain and Ireland.