I have been getting several bites from my garden and yard resembling the same appearance. The area becomes very hot, swollen and you can see the entry point. It takes many days for it to calm down but continues to itch weeks later after the swelling subsides. I wondered if it was a stinging insect or a mosquito as you don't feel a sting. About a half hour later you begin scratching yourself raw. Benadryl helped a lot but I also had to apply an anti itch ointment too. This is very different from a typical mosquito bite. That's why I'm thinking it is some sort of stinging insect like perhaps a sweat bee which are tiny.