Many different kinds of wasps exist, with widely varying habits and structural characteristics. They may be divided into the social wasps and the solitary wasps. Social wasps include the hornets, the yellow jackets, and the large, mahogany-colored wasps known as the paper wasps; they live in communities consisting of males, females, and sterile workers. The solitary wasps, including the mud daubers, potter wasps, and digger wasps, produce no workers and build individual nests. The nesting habits of the solitary wasps are extremely diverse. The potter wasps build vaselike cells of clay attached to the twig of a tree. The mud daubers construct mud cells in sheltered places; the digger wasps burrow into the soil and sometimes in decaying wood. Solitary wasps generally provide the cells with spiders, caterpillars, or flies stung through the nerve center and thus rendered helpless. In this way, the young insects are provided with fresh food. The digger wasp taps down the earth with pebbles to fill the mouth of its burrow. Scientific classification: Wasps belong to the order Hymenoptera. (From Wasp Facts)