Rusty patched bumblebee (Bombus affinis)

This rusty patched bumblebee (Bombus affinis) specimen was collected in 1915 in Milwaukee. Rusty patched bumblebees live in prairie ecosystems and collect pollen and nectar from a variety of plants. Once a common sight in Wisconsin, the northern Midwest, and the northeastern states, land use changes and habitat loss have caused a steep decline in rusty patched bee populations. The species was listed as Federally Endangered under the Endangered Species Act in January 2017.