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The Poweshiek Skipper Project | |
| Lake Hawthorne ©Rayford
Ratcliff
Introduction Information about the butterfly
O.
poweshiek, Legacy butterfly Legacy
of Chief Poweshiek
H.W. Parker's writings Von Blixum's Heroic Experiment
Iowa's
biological diversity
The Poweshiek Skipper Project Goals
of the project
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Butterflies Butterflies are fairly well studied in Iowa, mostly by a
small number of very dedicated researchers. There have been lists of
Iowa butterflies floating around for quite some time, and a book on Iowa's
butterflies has recently been published: Schlicht, Dennis, John C. Downey, and Jeffrey C. Nekola. 2007. The Butterflies of Iowa. The University of Iowa Press, Iowa City, IA. This is a great book, and it was a long time in the making. It lists all of Iowa's butterflies (118 species plus a few occasional strays) with range maps and diagrams that show the time of year that they can be expected. There are detailed descriptions of the habitats and habits of the individual species in Iowa, plus some questions that point out some of the unknowns about those butterflies. There are some concerns, however. A whole group of butterflies seems to be in trouble. That group can be called the prairie obligates, because they need good prairie to survive.
What is causing the loss? Management of prairie preserves by fire has been implicated by some of the butterfly researchers, and widespread use of pesticides in Iowa has to be considered. There could be other reasons as well, such as invasive predator species. As this site grows I hope to add more about butterflies. The two butterflies on the top right are eastern tailed-blues, almost certainly both male. They are obtaining water and minerals from the mud, which is a common butterfly behavior. The butterfly on the bottom is a question mark butterfly. It is a common woodland butterfly. I have written a short guide to help school children who might be exploring a prairie for the first time to identify the butterflies they might find. It is intended for about a fourth or fifth grade audience and for the early September to mid October time frame. This is a large file--about 5 megabytes. You can find it here: Prairie butterflies. Here is a checklist of Iowa's butterflies, especially designed for beginners: Checklist |
A
number of the prairie obligates have disappeared or almost disappeared
from Iowa. These include the Dakota skipper (extirpated), Poweshiek
skipper (almost extirpated) prairie ringlet (probably extirpated), and
several others.