Entomology
Strictly speaking, entomology is the study of insects, their form and behaviour. For our purpose, we'll blur the edges and include articles on vertebrates, molluscs, crustaceans, and anything else that features significantly in a fishes diet, and can feasibly be represented with an artificial fly. We'll focus on the details that are of particular significance to the angler.
If you feel inspired to look more deeply into this aspect of fly fishing then you may want to refer to the bibliographies accompanying some accounts, or perhaps take a look at the notes opposite that contain links to some zoological and entomological establishments and resources.
In the coming months fisheries biologist Brian Chan will be adding articles including a guide to stoneflies and an article on damselflies.