Bug Identifier
Stag Beetle
Community identification

Stag Beetle

Lucanidae (various genera and species)

Order & Family
Order: Coleoptera, Family: Lucanidae
Size
Typically 2 to 7.5 cm (0.8 to 3 inches), some species can be larger.
See this bug in the Encyclopedia

Natural Habitat

Deciduous forests, woodlands, and gardens, particularly where dead or decaying wood is plentiful. Larvae live in rotting wood underground.

Diet & Feeding

Adult stag beetles feed on tree sap, decaying fruit, and nectar. Larvae feed on decaying wood.

Behavior Patterns

Males are known for their large mandibles, which they use to fight other males for mating rights. They are largely nocturnal and can be attracted to lights. Larval development can take several years.

Risks & Benefits

Stag beetles are generally harmless to humans. Their larvae play a beneficial role in forest ecosystems by breaking down dead wood, contributing to nutrient cycling. They are considered indicators of healthy woodland habitats.