small red bug

today i was looking at my seedlings 18days, and i notice some light brown little spots on the bottom 2 leaf's, so i went on here and look for some info and found some info on spider mites so i went back to my plants and looked real close on the plant with the brown spots and noticed a red little bug killed it, what is it and what can i do, didnt notice and more..any help would be great..

there are red spider mites.


I believe they are native to idaho
There are plenty of threads about spidermites just do a search and you shouldn't have any trouble finding info on them and how to deal with them.

Thanks for the info..