Bug Identifier
Four-toothed Mason Wasp
Community identification

Four-toothed Mason Wasp

Monobia quadridens

Order & Family
Order: Hymenoptera; Family: Vespidae
Size
13 to 20 mm (approximately 0.5 to 0.8 inches)
See this bug in the Encyclopedia

Natural Habitat

Typically found in meadows, gardens, and woodlands; also residential areas near potential nesting sites like old wood, stems, or abandoned nests of other bees.

Diet & Feeding

Adults primarily feed on flower nectar for energy. Females hunt lepidopteran larvae (caterpillars) to provide as food for their developing offspring.

Behavior Patterns

Solitary wasps that do not live in colonies. Females build nests by partitioning existing cavities with mud. They are often active from late spring to early autumn and have a complete metamorphosis life cycle.

Risks & Benefits

Benefits the ecosystem naturally by controlling caterpillar populations and assisting in pollination. While they are capable of stinging if handled or threatened, they are generally non-aggressive towards humans and lack the nest-guarding drive of social wasps.