| Drugstore beetle | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Ptinidae |
| Subfamily: | Anobiinae |
| Tribe: | Stegobiini |
| Genus: | Stegobium Motschulsky, 1860 |
| Species: | S. paniceum
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| Binomial name | |
| Stegobium paniceum | |
| Synonyms | |
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The drugstore beetle (Stegobium paniceum), also known as the bread beetle, biscuit beetle, and misnamed as the biscuit weevil (despite not being a weevil), is a tiny, brown beetle. It can be found infesting a wide variety of dried plant products, where it is among the most common non-weevils to be found. It is the only living member of the genus Stegobium. It belongs to the family Ptinidae, which also includes the deathwatch beetle and furniture beetle. A notable characteristic of this species is the symbiotic relationship the beetles have with the yeast they carry, which are transmitted from female to larvae through the oviduct.[1]
The drugstore beetle is distributed worldwide with higher prevalence in warmer climates. The drugstore beetle is commonly confused with the cigarette beetle, as they have a similar size and coloring. Adults possess antennae ending in 3-segmented clubs, while cigarette beetles have serrated (saw-like) antennae. Their bodies are also lined with grooves running longitudinally along the elytra, whereas the cigarette beetle is smooth.[2]