The Hine's emerald dragonfly is the only dragonfly on the federal endangered species list. The insect's largest remaining population lives in Door County, Wisconsin, where sandy beaches and cherry and apple orchards draw tourists from Green Bay and beyond. A 2003 study found these summer drivers kill about 3,300 Hine's emerald dragonflies each year, said Amber Furness, a University of South Dakota graduate student. No one knows exactly how many Hine's emerald dragonflies are left, but there are at least 10,000 in Door County and up to 3,000 in the Chicago region.
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