Robert DuBois – författare

All 51 Species of Damselflies in Minnesota, Wisconsin and MichiganGet the new edition of Damselflies of Minnesota, Wisconsin & Michigan. As part of the popular North Woods Naturalist Series, this handy field guide by Robert DuBois and Mike Reese contains detailed information and features an innovative format that makes field identification a snap. Fieldmark arrows point out the best distinguishing characteristics. Amazingly detailed art clearly illustrates the claspers and abdomen tips, further helping to distinguish between closely related species. The range maps are larger and updated with the latest survey data, and red-bar phenograms help you know when each species is on the wing. Fascinating natural history facts and more than 170 photographs create a perfect guide to carry with you. It is the first comprehensive guide to damselflies in all of Minnesota, Wisconsin and Michigan.