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In my bathroom, I keep finding these very small bugs. They have 6 legs from what I can tell, two antennae, and they look grey in color (although the picture makes them look more of a tan):

bug on white background

They are very small, smaller than a sugar ant even. What are these?
I'm in south east Pennsylvania, I would ideally like to know if they are destructive. From my research, they might be a springtail but I'm not positive.

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    The traditional name for these is "small brown bug". Too many options to identify exactly. What are you interested in — family/genus/species or harmless/icky/dangerous?
    – anatolyg
    Jun 21, 2022 at 6:35
  • Thank you. Information discussed has helped me identify the little pests that I started seeing around my kitchen sink. It turns out that they are springtails. They are about 2 mm long with a streamline body, and they hop pretty fast. In addition to humidifier, I learned that infested area can be treated with cider vinegar which will help get rid of them.
    – Cher
    Jun 24, 2023 at 3:58

2 Answers 2

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This is indeed in the Springtail family, but that is quite vague. And narrows it down to 6000 species.
We can do better!
Source: https://en.wikipedia.org/wiki/Springtail

This bug is in the Slender Springtails Family or Entomobryidae. That narrows it down to 1700 species
Source: https://en.wikipedia.org/wiki/Entomobryidae

The location narrows it down further, but a few hundred species are still possible. After going through the possibilities, and a bug ID database. The bug is clearly Willowsia nigromaculata. In the family Entomobryidae

Willowsia nigromaculata has a metallic iridescent body and is covered in translucent scales. It is often found indoors in places such as houses, garages and greenhouses.

If you would like more information on this bug, I will redirect you here: https://en.wikipedia.org/wiki/Willowsia_nigromaculata
Although, unfortunately, there is very little information about this bug

Let me know if you have further questions!

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  • Thanks for the huge amount of details and looks like you nailed
    – Timmy Jim
    Apr 18 at 14:13
  • @TimmyJim Thank you! Your acceptance of my answer means a lot to me :)
    – Arrow
    Apr 18 at 15:59
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springtail bug most likely. according to what i searched up they adore moisture, and them showing up in your house is an indicator of excess moisture, which is not too big an issue in your bathroom. Harmless lil guys, i guess if you see them elsewhere the only course of action to bother with is a dehumidifier.

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  • This was (formerly) near a window that had a leak actually in my bathroom. It has since been fixed. You should have seen what the sheathing underneath looked like when we tore the wall down. From my research long ago, this was the bug I thought it was too.
    – Timmy Jim
    Jun 16, 2023 at 3:23

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