Drugstore Beetle vs Caenis Mayfly

Side-by-side species comparison

Attribute Drugstore Beetle Caenis Mayfly
Scientific Name Stegobium paniceum Caenis horaria
Order Coleoptera Ephemeroptera
Family Ptinidae Caenidae
Size 2-4 mm 3-6 mm
Habitat Indoors Rivers & Streams
Diet Detritivores Detritivores
Regions Europe, North America, Asia, Africa, Oceania Europe
Conservation Least Concern Least Concern

Drugstore Beetle

A stored product pest once found infesting pharmaceutical herb collections.

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Did You Know?

It has been found feeding on materials as diverse as leather and strychnine.

Caenis Mayfly

One of the smallest mayflies, often called the 'angler's curse' because trout feed on them selectively. Larvae inhabit slow-flowing rivers and lake margins.

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Did You Know?

Caenis mayflies are called the angler's curse because their tiny size makes matching them with artificial flies nearly impossible.