A massive (1.5-inch) glossy beetle whose males have antler-like mandibles used for combat over mates. Their larvae spend years inside decaying logs, recycling forest nutrients critical to ecosystem health.

Also called: Stag Beetle

Native status: Native; widespread in eastern North America

§ Quick facts

SizeBody 30–55 mm (1.2–2.2 in)
Weight~500 mg
LifespanAdults 6–12 months; full cycle 2-3 years
OrderColeoptera
FamilyLucanidae

§ Encyclopedia

Lucanus capreolus, the reddish-brown stag beetle or pinching beetle, is a beetle of the family Lucanidae. The specific name capreolus is derived from Latin, meaning "roe deer". The name refers to the resemblance of the mandibles to deer antlers.

Source: Wikipedia — Lucanus capreolus Licensed under CC BY-SA 4.0

§ Identification

Field marks. Stout reddish-brown beetle with massive mandibles in males.

Similar species. Other stag beetles. Rhinoceros beetles (different family).

Voice. N/A

§ Diet & behavior

Diet. Adults: tree sap. Larvae: decaying wood.

Behavior. Larvae spend years in decaying logs. Males fight with massive mandibles.

§ Range

Eastern US

§ Habitat

Mature deciduous forests with rotting hardwood logs

§ Threats

Removal of dead wood from urban forests and yards, light pollution disrupting mating, pesticide exposure.

§ Conservation status

According to the IUCN Red List, the reddish-brown stag beetle is currently classified as Least Concern.

§ What helps

Leave dead wood and stumps in your yard. Turn off porch lights at night in summer. Avoid broad-spectrum insecticides.

Support our work More ways to help

§ Further reading

§ Sources cited

  • Xerces Society
  • BugGuide
  • iNaturalist