Order Decapoda - Crabs, Crayfishes, Lobsters, Prawns, and Shrimp

Hosted by the Missouri Department of Conservation, this is an on-line guidebook to 29 of the 35 species of crayfish known to occur in Missouri.

Links to a series of videos focused mainly on microscopic identification of specimens of plant-feeding arthropods (and potential pest species), including sections on mites, thrips, aphids, whiteflies, mealybugs, stink bugs, scale insects, leafhoppers/planthoppers, and some moths/caterpillars.

There are also other ID tools and videos that can be searched for here:
https://idtools.org/identify.php?format%5B%5D=website&keyword=&category=1&sortby=date+DESC

Hello, how are you doing?I hope you are all fine
I have a little problem...
Today i saw a creature (looked like an insect to me ) going under my couch.It was black in the size of my palm, circular and it was very fast.I couldnt see it clearly
I think it had many legs but i am not sure because it was very fast
Then me and my friend saw it leaving the couch and going to the kitchen.
My friend saw it closer and she said it was flat, but we cants say for sure because we didnt manage to see it clearly
It didnt look like a mouse or a rat , more like an insect like a spider or something but it was very circular to be a spider