I found a rather strange invertebrate...something... outside my home this evening, and I have no idea what it might be. It looks kind of like a small brown lobster, without the claws. I think it has 8 legs, making it an arthropod(?), but if I've misidentified that, please correct the tags. It's 4 or 5 inches long, head to tail. It was found in south-eastern Massachusetts. Potential nearby habitats are open grassy fields, a forest, and a cranberry bog, if that helps.

enter image description here

The picture is kinda fuzzy, I think the video is better.

Any ideas?

  • 2
    $\begingroup$ Don't know for sure, but crayfish seems plausible to me. $\endgroup$ – mgkrebbs Aug 6 '18 at 5:47
  • $\begingroup$ Welcome to Biology.SE! I suggest you to take the tour to learn more about this site and earn yourself your first badge. Have a nice stay! $\endgroup$ – LinuxBlanket Aug 6 '18 at 6:03
  • $\begingroup$ @mgkrebbs crayfish is what other people elsewhere are suggesting as well. It was pretty cool, I'd never seen one before. $\endgroup$ – asgallant Aug 6 '18 at 14:39
  • $\begingroup$ Yep, it's a crayfish ... given the locality and assuming it's native to the area, we're looking at a member of the family Cambaridae, which has dozens of genera and hundreds of species north of Mexico (and requires that you have a "first-form male" for genus level identification: see How to Know the Freshwater Crustaceans, if you can find a copy). $\endgroup$ – Arthur J Frost Aug 8 '18 at 20:34

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