Valentine Ant vs Knapweed Gall Weevil

Side-by-side species comparison

Attribute Valentine Ant Knapweed Gall Weevil
Scientific Name Crematogaster cerasi Bangasternus fausti
Order Hymenoptera Coleoptera
Family Formicidae Curculionidae
Size 2.5-4 mm 4-6 mm
Habitat Woodlands Grasslands
Diet Gall Makers Gall Makers
Regions Eastern North America Europe, Central Asia
Conservation Not Evaluated Least Concern

Valentine Ant

A North American acrobat ant common in deciduous forests and suburban yards. They typically nest in dead branches and old insect galleries in trees.

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Did You Know?

Their heart-shaped abdomen gives them the charming nickname valentine ant.

Knapweed Gall Weevil

A weevil that induces galls in knapweed flower heads. Larvae develop inside the enlarged flower buds. Used in biological control of invasive knapweeds in North America.

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Did You Know?

Released in North America as biocontrol for invasive spotted knapweed, which costs ranchers millions annually.