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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 Microcoryphia (aka Archeognatha): the jumping bristletails and rock bristletails — Examples
Jumping Bristletails (Petridiobius arcticus)
Jumping Bristletails, likely Petridiobius arcticus, family Machilidae.
□ The photographer is an archaeologist who discovered these little Jumping Bristletails when he looked through a stereomicroscope at some rock chips he had collected in Alaska. They are approximately 3 mm long (about 1/10 inch). What a marvelous surprise to find these insects!
Photographed by: Martin Stanford, archaeologist for the U.S. Forest Service at Tongass National Forest, Ketchikan-Misty Fiords Ranger District in Alaska. Identified by: Derek Sikes, curator at the University of Alaska Museum. Thank you, Dr. Sikes for the ID! Location: Misty Fiords National Monument, Alaska, USA. Date: 2016.
Jumping Bristletails (Petridiobius arcticus)
Jumping Bristletails, likely Petridiobius arcticus, family Machilidae.
□ Note some of the features of these rarely seen insects: numerous paired appendages (called styli) running down the abdomen, and a humpbacked appearance due to an arched thorax. And they do jump by snapping the abdomen against the ground and popping into the air!
Photographed by: Martin Stanford, archaeologist for the U.S. Forest Service at Tongass National Forest, Ketchikan-Misty Fiords Ranger District in Alaska. Identified by: Derek Sikes, curator at the University of Alaska Museum. Thank you, Dr. Sikes for the ID! Location: Misty Fiords National Monument, Alaska, USA. Date: 2016.


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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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