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*** Note: KnowYourInsects.org does its best to include correct identifications of insect photos. It’s always possible that we made a mistake, however, so if you see a misidentification, please contact us and we will correct it. Thanks!

Order Zygentoma (formerly Thysanura): the silverfish and firebrats — Examples

Silverfish
Silverfish, order Zygentoma.
□ Silverfish like damp places and are usually nocturnal. They also eat wood and wood products, including paper, so they are sometimes found in and around books.
Photographed by Meem Sarkar. Identified to order by: KnowYourInsects.org. Location: Siliguri, India. Date: 15 September, 2017. Meem says it “looks like trilobite in some ways.” That is a great description, Meem! It is an odd-looking little critter!
Silverfish
Firebrat, likely the genus Thermobia, family Lepismatidae, order Zygentoma.
□ Silverfish often show up in a bathroom, like this one did.
Photographed by Ibrahim Hlwani. Identified to order by: KnowYourInsects.org. Location: Cairo, Egypt. Date: 11 October, 2017. Ibrahim says, “I found it in my bathtub.”
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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; Halloween pennant (Celithemis eponina) — photo credit: Kay Meng, U.S. Fish and Wildlife Service.

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