Does anyone know if this is a bedbug? Or maybe a cockroach? I am located in Quebec, Canada.

If you need a clearer picture I'll try to take one without the glass in the way so my camera can focus better. Hopefully it doesn't escape.

enter image description here

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    $\begingroup$ where are you? country/state? $\endgroup$ Mar 2, 2017 at 22:11
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    $\begingroup$ This is a woodlouse (often called a "pill bug" or "rolly polly"). See this answer for an example of an actual bed bug. $\endgroup$ Mar 4, 2017 at 5:51

2 Answers 2


I think I can see 5 extremities sticking out under the shield on one side in your image. Hence I think it has a total of 10 extremities. A bedbug, belonging to the class of insects, should have just 6.

I'm pretty sure it's a pill bug (Fig. 1), a family of woodlice (Armadillidiidae), belonging to the isopoda, an order of crustaceans. Crustaceans include the lobsters, crabs and crayfish, to name a few.

pill bug
Fig. 1. A Pill bug species. source: Natural History of Orange County, CA

A bed bug is an insect and has six extremities (Fig. 2).

Bed Bug
Fig. 2. A bed bug species. source: Terminix

So long story short, your species here is not an insect, and hence not a bed bug.

From the limited amount of information you've provided a specific species determination is difficult; there are many pill bugs.

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    $\begingroup$ Thank you! After going through some pictures of the different species of pill bugs, I have found a match. $\endgroup$
    – Bob
    Mar 2, 2017 at 22:10
  • $\begingroup$ Do you any special reason to say pill bug? From the unclear picture I find that hard so say. It's clearly a woodlouse though. $\endgroup$ Mar 4, 2017 at 19:26

No, it looks like a woodlouse. They are perfectly harmless to humans, and feed on decaying plant matter. They are also called isopods, roly-polies, or pill bugs.

Woodlouse on Wikipedia


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