Apple Caddis vs Black Cocktail-Ant Rove Beetle

Side-by-side species comparison

Attribute Apple Caddis Black Cocktail-Ant Rove Beetle
Scientific Name Brachycentrus appalachia Lomechusa pubicollis
Order Trichoptera Coleoptera
Family Brachycentridae Staphylinidae
Size 8-12 mm 4-6 mm
Habitat Rivers & Streams Woodlands
Diet Omnivores Omnivores
Regions North America Europe, Northern Asia
Conservation Least Concern Least Concern

Apple Caddis

A caddisfly of Appalachian streams that builds tapered square cases from plant material. Larvae orient their cases facing into the current for filter feeding.

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Did You Know?

The square cross-section of the case is thought to reduce drag in fast currents.

Black Cocktail-Ant Rove Beetle

A myrmecophilous rove beetle that lives inside ant nests. It secretes chemicals that trick ants into feeding and caring for it.

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Did You Know?

Its adoption glands produce substances so appealing to ants that they prioritize feeding the beetle over their own larvae.