Bug of the Week: The Zombie Wasp

Posted by Beth Watson on

Bug of the Week: The Zombie Wasp

Forget all the halloweeny ghosts and ghouls. That’s SO last month 🙄 The real terror lives under leaves with it’s legs curled around a twig & a blank stare that says, “I am no longer in control.” Meet the Zombie Wasp, a parasite so spooky it could’ve crawled out of a horror film!

What’s a Zombie Wasp?

Several parasitic wasp species (including those from the genera Glyptapanteles, Hymenoepimecis, & Cotesia) have evolved mind-controlling powers. These wasps lay their eggs inside other insects, usually caterpillars or spiders, and once the larvae hatch, they begin to manipulate their host’s behavior for their own survival.

Fun Fact: Web of Doom

In the case of the Hymenoepimecis argyraphaga, a Costa Rican wasp targets an orb-weaving spider. After injecting its egg, the larva feeds off the spider’s blood for several days, then chemically rewires its brain, forcing the spider to weave a completely different kind of web. This “death web” is stronger, smaller, & built to protect the larva while it cocoons. When the web is done? The larva kills the spider and builds its cocoon right there.

Sweet dreams!

Where to Spot Them

Zombie wasps and their victims can be found around the world;  in tropical forests, temperate gardens, or even your backyard. Many are tiny and overlooked…until you spot their sinister handiwork.

Why They’re Cool

They’ve mastered chemical warfare and behavior modification without ever reading a science textbook. It’s nature’s version of necromancy, complete with brain control, body hijacking, and parasitic puppetry.

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