Biscuit Beetle

Stegobium paniceum

The drugstore beetle, also known as the bread beetle, biscuit beetle, and misnamed as the biscuit weevil, is a small brown beetle that infests a wide variety of dried plant products, where it is among the most common non-weevils. It is the only living member of the genus Stegobium. It belongs to the family Ptinidae, which also includes the deathwatch beetle, furniture beetle and cigarette beetle. A notable characteristic of this species is the symbiotic relationship the beetles have with a yeast-like fungus which is transmitted from female to larvae through the oviduct.

Scientific name
Stegobium paniceum
Family
Ptinidae