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Tansy Beetle

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description Tansy Beetle Overview

The Tansy Beetle is a metallic-green chrysomelid beetle belonging to the leaf-beetle family. It’s notable for its extremely limited distribution primarily along the River Ouse in England and Wales making it a rare species. Conservation efforts focus on protecting this unique European insect, particularly benefiting entomologists, ecologists, and those involved in biodiversity monitoring programs studying specialized habitats.

help Tansy Beetle FAQ

What does the Tansy Beetle look like?

The Tansy Beetle is a strikingly iridescent green leaf beetle. It has a metallic, jewel-like shell that made it highly prized by Victorian jewelry makers, which contributed to its population decline.

Why is the Tansy beetle endangered in the UK?

The beetle is endangered primarily because it has a highly restricted habitat, found almost exclusively along the banks of the River Ouse in Yorkshire, England. It relies entirely on the tansy plant for its food and habitat.

What is the primary food source for the Tansy Beetle?

As its name suggests, the beetle feeds exclusively on the tansy plant, a perennial herb. When tansy plants are removed from the riverbanks, the beetle populations crash as they have nowhere else to go.

Can Tansy Beetles fly to find new habitats?

Despite having fully formed wings under their shells, Tansy Beetles have largely lost the ability to fly. Because they cannot fly to find new habitats, they are extremely vulnerable to localized extinction if their riverbank environments are disturbed.

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