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It is found in my apartment in Finland. I had to kill it to stop it from getting away before looking for the camera, but it looked pretty much the same alive and intact. It's length is about half a centimeter, and the younger ones look darker. It is often found in dark. Since their appearance, I often notice red and slightly itchy bug bite in the morning. The question is what is this insect?

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Where in your apartment did you find them (what environment)? – fileunderwater Jan 27 '14 at 21:55
@fileunderwater I don't know where did they come from, but they are just found on the wood and ceramic floors. The environment is warm and reasonably dry. – agriprop Jan 28 '14 at 7:04
up vote 2 down vote accepted

It reminds me of silverfish, a common wingless house insect.

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yeah, my first idea as well, and the environment fits. I first thought that the legs looked a bit long though. However, environment + movement patterns is a good way to identify them by. – fileunderwater Jan 28 '14 at 13:56

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