Hemosiderin staining looks like a patch of skin that is a darker color than the surrounding skin. It can look like bruising, or it can be brownish or rust-colored. It may be harder to spot if you ...

The species is distinguished by the presence of a rusty colored patch on its lower abdomen, which gave it the colloquial name of the rusty-patched bumble bee, University of Wisconsin Arboretum Native ...