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NO. 026Giant ichneumon wasp, female illustrationIllustration · not shown at life size

Bees & wasps / Insect

Giant ichneumon wasp

Megarhyssa spp. · genus group

Adult · femaleA special find

The female’s long tube is for laying eggs. She uses it to reach into dead wood.

Let’s look closer

Little clues

Three things to notice.

  1. Long egg-laying tube.

  2. Very slender waist.

  3. Lays eggs into dead wood.

Out in the world

Where to look.

Around southeastern Wisconsin

Dead trees with horntails.

When to look

Summer, beside dead wood.

Look closely. Leave your tiny neighbor where you found it.

A closer look

One clue is just the start.

The long tube belongs to the female. It helps her lay eggs near a wood-eating insect hidden inside a tree.

A special find can be hard to spot without being biologically rare. Encounters depend on season and habitat.

For curious grownups, too

Read a little further.

Original summaries, with references for deeper reading. Field notes are being checked against the supplied research.

Make a bug slide

Artwork & downloads.

Front artwork is made for a 3-inch clear disc. Revised artwork still needs a physical check. Reverse QR files use the confirmed permanent website.

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