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.
The cichlid fishes of the genus Labeotropheus were first described in 1927, when the type species L. fuelleborni was described as a new species by the German ichthyologist Ernst Ahl. A second species, L. trewavasae, was described in 1956 by the British zoologist Geoffrey Fryer.
The Celestial Globe (H57842/29193) was donated to the Milwaukee Public Museum in 1903 along with its companion terrestrial globe (H59492) and a manual of cosmic and terrestrial observations (H57843). The globe was developed by Johann Oelrich Kroehnke (1810-1897), an immigrant to New Holstein, Wisconsin in 1847. Kroehnke was a merchant, farmer and community leader and was intensely interested in intellectual pursuits and education, often at the expense of his personal fortune.
This 2,600-pound sandstone contains 500-million-year-old animal tracks . The fossil, donated by Eden Stone Company , is from Marathon County, Wisconsin and dates to the middle to late Cambrian period. The rock surface contains ripple marks and a fossil track named Diplichnites. The footprints were produced by a euthycarcinoid—an extinct, primitive arthropod.