Glacier Stonefly

Joe Giersch

The U.S. Fish and Wildlife Service (FWS) pointed to impacts from climate change in its November 21 listing of two stonefly species. The meltwater lednian and the western glacier stonefly were listed as threatened under the Endangered Species Act. Both primarily inhabit Glacier National Park, but the western glacier stonefly also has populations in Grand Teton National Park.

Cooper McKim

Scientists know very little about a species of stonefly that can only be found in the alpine streams of the Grand Teton Mountain Range: the Lednia tetonica.

Joe Giersch, USGS

Scientists at the University of Wyoming have discovered an insect thought to be extinct in the region in four streams in the Tetons.

The glacier stonefly was believed to only survive in streams in Glacier National Park and the Beartooth Absorka Range in Montana. UW Invertebrate Zoologist Lusha Tronstad said the discovery has put the decision-making process on hold over whether to list the species.