What is the difference of flea bites and mosquito bites (physical appearance)?

I have like 31 bites on my right leg, 30 on my left, 15 on my right arm and hand, 10 on my left arm and hand, and 10 on my stomach/back. I live in Texas, and I went to the park two days ago. I am assuming I got these there, because I noticed them yesterday morning when I woke up. I am praying they aren't fleas. And I know my dogs do not have fleas because we bathe them regularly and they don't scratch, so we know for a fact they are okay.

Have you ever heard of chiggers? They are in the mid west and scab over and look like flea bites. They bury themselves into your skin, die there and then scab over and fall off.

Fleas don't scab over as fast as chigger bites. If you live in part of the country where chiggers don't exist then its fleas from the way you describe it.

Mosquito bites swell up when you itch them and don't necessarily scab over.