mosquitoes.
I have had 3 tick bites in the last 2 years, one being very serious that attached itself to my groin area. My man balls swelled up to the size of grapefruits. It was an allergic reaction and went down after a few days. I hate them!But if I could make one species completley extinct it would be cockroaches. My skin crawls at the thought of them scurrying over my kitchen bench and childs toys.