It's an extremely annoying creature particularly prevalent at this particular time known as a Politicinas de campaignus. They have a tendency to get under people's skins and cause extreme irritation and are notoriously difficult to avoid, even I understand, capable of transferring their infection from things like newspaper, and not just by physical contact.
The only consolation I can offer is that their season of high infection is relatively short and normally dies away to an insignificant annoyance afterwards. I would suggest that within 48 hours the majority of these irritating bugs will be hard to find in an urban area and almost impossible to trace in a rural environment. So the cure is grin and bare it for a little while longer, and allow yourself to rejoice in the certain knowledge that quite a few of them will soon lose their ability to inflict pain and discomfort on people.
Or you could try Calamine lotion.......