Bug Identifier
Stag Beetle
Community identification

Stag Beetle

Lucanus cervus

Order & Family
Order Coleoptera, Family Lucanidae
Size
30 mm to 75 mm (1.2 to 3.0 inches), with males generally larger
See this bug in the Encyclopedia

Natural Habitat

Deciduous woodlands, forests, and occasionally gardens near decaying hardwood stumps and logs

Diet & Feeding

Larvae feed on decaying wood and roots underground; adults feed on tree sap, rotting fruit, and nectar

Behavior Patterns

Mostly nocturnal, active during warm summer evenings. Larval stage can last several years underground before pupating and emerging as adults. Males use enlarged mandibles to fight each other for territory and mates.

Risks & Benefits

Harmless to humans as they do not sting and rarely bite unless severely provoked. Ecologically beneficial as larvae help break down dead wood and recycle nutrients back into the soil.