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'Zombie' caterpillars are exploding to their deaths

"It’s like a zombie horror film.”
 By 
Sasha Lekach
 on 
'Zombie' caterpillars are exploding to their deaths
Here's an oak eggar moth caterpillar that hasn't exploded. Credit: imageBROKER/REX/Shutterstock

A strange thing is happening to caterpillars in the the English countryside: they're exploding.

The oak eggar moth caterpillar in Lancashire, England, has been infected by a baculovirus. The virus makes the caterpillars climb to the top of plants, toward the sun.

This is not normal behavior. Usually the caterpillars are deep in the moss and undergrowth--away from birds and other predators. Once at the end of a branch, the caterpillar explodes when the baculovirus bursts out of its skin, looking to infect caterpillars below.

“It’s like a zombie horror film,” Chris Miller at the Lancashire Wildlife Trust, the wildlife charity that oversees the Winmarleigh Moss Nature Reserve, said in a statement.

The infected caterpillars climb because the baculovirus affects how they respond to light. Once in a higher-than-usual location, they die, leaving their skin behind.

The zombie takeover, however, isn't a new phenomenon. It's been recorded for years, but this appears to be the latest "outbreak."

Topics Animals Nature

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Sasha Lekach

Sasha is a news writer at Mashable's San Francisco office. She's an SF native who went to UC Davis and later received her master's from the UC Berkeley Graduate School of Journalism. She's been reporting out of her hometown over the years at Bay City News (news wire), SFGate (the San Francisco Chronicle website), and even made it out of California to write for the Chicago Tribune. She's been described as a bookworm and a gym rat.

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