They are giant, aggressive insects who will try to sting any individual they come into close contact with; the effect of these stings can be quite painful to the victim. They are very attracted by the smell of certain flowers.
There are two known kinds of Vampyr Mosps, the Purple Vampyr Mosp and the Red Vampyre Mosp. The Purple variants are usually less aggressive than Red variants.Scotland, in wet places; Hogwarts has a reasonable amount of them in the sewers and pipes, and in the Herbology Greenhouses. Many also inhabit large hives in the Forbidden Forest.