Oh my gosh I feel that! Just a few days ago i was getting rekt by tarantulas and scorpions. Mostly tarantulas, though. Scorpions don't seem to spawn in my town.. like, it's pretty rare/ I've seen a total of 3.
That's happened to me a few times, both with scorpions and tarantulas. I have a hard time catching them because of how startling they can be. Actually, I've only caught my first scorpion in any AC game today, and I've been playing since Wild World. Still haven't caught a tarantula, though.