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Damselflies of Minnesota, Wisconsin & Michigan (Naturalist Series)
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About Damselflies Of Minnesota, Wisconsin & Michigan
Product Description All 51 Species of Damselflies in Minnesota, Wisconsin and Michigan Get 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. About the Author Robert (Bob) DuBois is an aquatic ecologist with the Endangered Resources Bureau of the Wisconsin DNR. In his 30-plus years with WDNR he has given numerous talks, led many workshops and field outings, and taught several university classes about odonates. The identification, ecology, and distribution of damselflies and dragonflies are his passion. Bob has published dozens of scientific journal articles and notes and, in 2010, authored Dragonflies & Damselflies of the Rocky Mountains. He has chased after odonates from coast to coast in more than half of the 50 U.S. states. Bob and his wife, Linda, live in Superior, Wisconsin, where he is near to his favorite haunts in the Bois Brule River Valley. Mike Reese was an educator in Wautoma, Wisconsin, for 29 years and has been interested in damselflies for many years. He runs a website on Wisconsin’s butterflies, tiger beetles, and robber flies (wisconsinbutterflies.org). Mike has contributed his photos of insects to over a dozen field guides, including as the main photographer for Tiger Beetles of Minnesota, Wisconsin & Michigan. He is also very involved with the North American Butterfly Association. Mike has downsized in his retirement, moved to Two Rivers, Wisconsin, and has branched out from insects to also become the Director of Volunteers for the second Wisconsin Breeding Bird Atlas project. Excerpt. © Reprinted by permission. All rights reserved. Amber-winged Spreadwing Lestes eurinus Breeding: Small lakes and ponds, usually permanent and usually lacking fish. Description: Adults average 2 inches long. Large and stout-bodied. Head, thorax and abdomen of male metallic green above, thorax abruptly turning to pale yellow below with a pair of dark oblique bands, one at base of hind leg, the other behind it. The last two abdominal segments are grayish-white pruinose. Film of pruinosity on thorax develops with age obscuring much of the underlying color pattern and giving a bluish hue. Wings entirely covered with an amber wash. Female is similar, also showing two dark bands on lower thorax. Identification Clues: Honey-colored wings, dark bands on thorax, and large size readily separate both sexes of this species from all other spreadwings. Shapes and relative sizes of terminal appendages of male are diagnostic, with cerci more than twice as long as paraprocts (see illustration this page). With females in the hand, also look for rounded margin of basal plate of ovipositor (illustration above). Life Cycle & Behavior: Adults emerge in June and July and may fly through August. After emerging, females may require up to a month to mature. American Bur-Reed (Sparganium americanum), along with a variety of rushes and sedges, are favored plants for egg laying. Eggs are laid into stems above water and take about 45 days to develop. Upon hatching, the pronymph emerges from the cut in the stem, falls into the water and molts into the second instar within three minutes. The nymphal period spans about nine months and includes 13 to 17 instars. Overwintering occurs d
