Mild-temperament
Guides
Mischocyttarus flavitarsis
Western Paper Wasp, Yellow-legged Paper Wasp
Mischocyttarus flavitarsis is a social paper wasp native to western North America, distinguished by its relatively docile defensive behavior compared to other vespids. Colonies are initiated in spring by foundress queens and persist until autumn, with nests typically containing fewer than 300 cells. The species exhibits flexible nesting habits, utilizing both natural cavities in riparian forests and anthropogenic structures such as building eaves. Unlike many social wasps, M. flavitarsis rarely stings, instead employing ramming behavior against perceived threats. Males engage in elaborate lekking and territorial scent-marking behaviors near female hibernation sites in autumn.