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Insect Identification Key
Identify Insects in Michigan ... and beyond!

Your answer to the previous question was that your insect has styli.

Arched thorax
Notice the humped back due to the arched thorax on this specimen. If this photo were taken from above, you would be able to see that its large compound eyes abut one another. Photo credit: Stemonitis.

Does your insect have a humpbacked appearance due to an arched thorax, and do its large compound eyes abut one another?

Look at your insect from its side to check whether its thorax is arched upward to give its back a rounded, or humpbacked, appearance. The second part of the question is referring to whether the eyes touch one another.


Click one of the following:

Yes, my insect has an arched thorax and abutting compound eyes.

No, my insect does not have this set of characteristics.


I would like to return to the start of this key.





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Unless noted otherwise, photographs on this website are the property of the photographers and may not be reused without written permission from the photographers. To obtain permission, email the photographers here. High-resolution versions of the photographs are available.

Photos at the top of this website are (from left to right): potato beetle (Leptinotarsa decemlineata) — photo credit: Scott Bauer, U.S. Department of Agriculture; ebony jewelwing (Calopteryx maculata)— photo credit: U.S. Fish and Wildlife Service; sweat bee (Agapostemon splendens) — photo credit: Natalie Allen and Stephanie Kolski, U.S. Geological Survey; preying mantis, monarch butterfly (Danaus plexippus), hellgrammite (aka toe biter) larva and eyed click beetle (Alaus oculatus) — photo credit: Leslie Mertz, DailyGraceCards.com; Halloween pennant (Celithemis eponina) — photo credit: Kay Meng, U.S. Fish and Wildlife Service.

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