What distinguishes Polistes Wasps' nests?

Polistes wasps, commonly known as paper wasps, are known for their distinctive nest structures, which indeed resemble inverted umbrellas. This unique shape arises from their method of constructing nests using chewed plant fibers mixed with saliva, creating a paper-like material. The nests typically have a small opening at the bottom and are suspended from a single stalk, making them easily recognizable.

While it is true that Polistes wasps tend to build their nests in open-air spaces, the defining characteristic that sets them apart is the shape of the nest itself. Furthermore, these nests are not placed underground, nor are they constructed from metal, which emphasizes the accuracy of the umbrella shape as a key feature in identifying Polistes wasps.