Oak Pinhole Borer vs Arctic Woolly Bear Moth

Side-by-side species comparison

Attribute Oak Pinhole Borer Arctic Woolly Bear Moth
Scientific Name Platypus cylindrus Gynaephora groenlandica
Order Coleoptera Lepidoptera
Family Curculionidae Erebidae
Size 4-6 mm 30-40 mm wingspan
Habitat Gardens Heathland
Diet Omnivores Omnivores
Regions Europe Canadian Arctic Archipelago, Greenland, Ellesmere Island
Conservation Least Concern Least Concern

Oak Pinhole Borer

A tiny ambrosia beetle that bores into oak trees and cultivates fungal gardens inside its tunnels. The only European species of its subfamily. Males guard the tunnel entrance.

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Did You Know?

One of the few farming insects in Europe, cultivating fungal crops inside tunnels bored into oak wood.

Arctic Woolly Bear Moth

A medium-sized moth whose caterpillar is famous for its extremely long development. Adults are gray-brown with hairy bodies. The densely hairy caterpillar is dark brown to black and curls into a tight ball when disturbed.

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Did You Know?

The caterpillar can take up to 14 years to complete development, spending most of each year frozen solid and thawing for only a few weeks of feeding each summer.