Japanese Diving Beetle vs Drugstore Beetle
Side-by-side species comparison
| Attribute | Japanese Diving Beetle | Drugstore Beetle |
|---|---|---|
| Scientific Name | Cybister japonicus | Stegobium paniceum |
| Order | Coleoptera | Coleoptera |
| Family | Dytiscidae | Ptinidae |
| Size | 30-38 mm | 2-4 mm |
| Habitat | Ponds & Lakes | Indoors |
| Diet | Omnivores | Detritivores |
| Regions | Japan, Korean Peninsula | Europe, North America, Asia, Africa, Oceania |
| Conservation | Vulnerable | Least Concern |
Japanese Diving Beetle
A large diving beetle native to Japan, once common but now increasingly rare. It has suffered severe declines due to habitat loss and invasive species.
Did You Know?
The American bullfrog, introduced to Japan, is a major predator of this beetle and a key driver of its decline.
Drugstore Beetle
A stored product pest once found infesting pharmaceutical herb collections.
Did You Know?
It has been found feeding on materials as diverse as leather and strychnine.