Ant-Nest Hister Beetle vs Gall Wasp

Side-by-side species comparison

Attribute Ant-Nest Hister Beetle Gall Wasp
Scientific Name Hetaerius ferrugineus Andricus quercuscalicis
Order Coleoptera Hymenoptera
Family Histeridae Cynipidae
Size 1.5-2.5 mm 3-4 mm
Habitat Woodlands Woodlands
Diet Detritivores Gall Makers
Regions Europe, North America Europe
Conservation Least Concern Least Concern

Ant-Nest Hister Beetle

A tiny, reddish-brown hister beetle that lives exclusively inside ant nests. It is tolerated by its ant hosts and feeds on detritus and small arthropods.

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Did You Know?

It produces appeasement chemicals from thoracic glands that prevent ants from attacking it inside the colony.

Gall Wasp

A tiny wasp that induces knopper galls on oak acorns, deforming them completely.

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Did You Know?

It has alternating sexual and asexual generations that produce different gall types.