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NO. 031Eastern dobsonfly, male illustrationIllustration · not shown at life size

Other insects / Insect

Eastern dobsonfly

Corydalus cornutus

Adult · maleA special find

A male dobsonfly has enormous curved jaws. Its young live in flowing water.

Let’s look closer

Little clues

Three things to notice.

  1. Male has huge curved jaws.

  2. Large, finely veined wings.

  3. Young live in flowing water.

Out in the world

Where to look.

Around southeastern Wisconsin

River corridors and lights at night.

When to look

Summer nights, sometimes near lights along rivers.

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

A closer look

One clue is just the start.

The male has the huge jaws shown in many pictures. Females have shorter jaws, and the young look very different.

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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