06/12/2026
Some species of bees, including honey bees and bumble bees, are social in that a queen lays eggs while female workers collect food for the colony and defend the nest from enemies. However, most bee species are solitary. This is also true for wasps where there are social species like yellow jackets, hornets, and paper wasps. However, most wasp species are solitary.
Most female solitary bees and wasps each build their own nests in the ground, or in pre-existing cavities or tube-like structures found in their environment. Solitary bees will collect pollen and nectar, pack it in a nest, and lay an egg on top to ensure the developing larva has a food source when it hatches. The nest opening is then sealed with chewed leaves, mud or resin, and they start on the next one. But what do solitary wasp moms do for their eggs?
Here’s a hint: Bees are herbivores and wasps are carnivores. So instead of pollen and nectar, solitary wasps will hunt caterpillars, beetle larvae, or other arthropods, paralyze them with a sting, and pack them away in the nest. An egg is then laid on top of the paralyzed prey and the nest opening is sealed.
The photos of this potter wasp were taken recently in Regina. In this female potter wasp’s case, it paralyzed a moth larva (possibly collected from a nearby raspberry bush) to provision its nest before laying an egg. It then sealed the nest opening with mud.