Seriously, with photography like that, you wouldn’t need much else in the book!
The WHOLE book could be just photos and a blank opposite page with scientific name, common name and then a brief bit about its unique features. Give general Hatch Date and conditions, type of hatch (crawler, swimmer) and related fly pattern suggestions. I think a book like that would be totally cool, and unique.
If you need a graphic designer, look no further, I’d be glad to help out with something like that. I’ve done a number books through Lulu.com, as well as large scale custom print jobs through printers.