Rajah Naga Stag Beetle vs Bean Weevil
Side-by-side species comparison
| Attribute | Rajah Naga Stag Beetle | Bean Weevil |
|---|---|---|
| Scientific Name | Prosopocoilus astacoides | Acanthoscelides obtectus |
| Order | Coleoptera | Coleoptera |
| Family | Lucanidae | Chrysomelidae |
| Size | 30-70 mm including mandibles | 2-4 mm |
| Habitat | Grasslands | Gardens |
| Diet | Wood Feeders | Seed Feeders |
| Regions | Southeast Asia (Thailand, Vietnam, Laos, Myanmar, Malaysia, Indonesia) | Central America (native), cosmopolitan |
| Conservation | Least Concern | Least Concern |
Rajah Naga Stag Beetle
A medium-sized stag beetle with reddish-brown elytra and a black head bearing distinctly toothed mandibles. Males display significant size variation with mandible shape changing allometrically.
Did You Know?
Small males have straight, simple mandibles while large males develop elaborate curved and toothed mandibles, a phenomenon called male dimorphism.
Bean Weevil
A small, mottled grayish-brown beetle with a compact, somewhat wedge-shaped body. It is a major stored-product pest that develops inside dried beans and other legume seeds.
Did You Know?
Multiple larvae can develop inside a single bean, and adults can fly directly to bean fields to infest crops before harvest.