Lesser Grain Borer vs South American Whirligig Beetle
Side-by-side species comparison
| Attribute | Lesser Grain Borer | South American Whirligig Beetle |
|---|---|---|
| Scientific Name | Rhyzopertha dominica | Gyrinus ovatus |
| Order | Coleoptera | Coleoptera |
| Family | Bostrichidae | Gyrinidae |
| Size | 2-3 mm | 5-7 mm |
| Habitat | Gardens | Ponds & Lakes |
| Diet | Seed Feeders | Omnivores |
| Regions | Worldwide tropical and subtropical regions | North America, Central America, South America |
| Conservation | Not Evaluated | Least Concern |
Lesser Grain Borer
A cylindrical dark brown beetle that bores into whole grain kernels, reducing them to powder. It is especially destructive in warm tropical grain stores.
Did You Know?
It produces a distinctive sweet, musty odor that can taint infested grain.
South American Whirligig Beetle
A widespread whirligig beetle found across temperate and tropical regions of the Americas. It is highly gregarious and forms dense surface swarms.
Did You Know?
Its flattened, boat-shaped body creates almost no wake, allowing it to glide efficiently across the water surface.