Went to the foothills today and back. Lots of small swarms of bugs. However one hit my helmet that was quite a bit bigger with a loud hard thump. Was doing 24 mph when that happened. Just a bit later one hit my chest that was large and black. Could not indentify either one. I think the one that hit my chest cound have been a horse fly. On a previous ride was on top of Santa Fe Dam with i rode through a swarm of bees that felt like BBs bouncing off me, did not get stung. Since i keep my eyes on the rode i have very little time to react with flying insects. the hardest hits seem to be at an angle.