Question
I found a bug on a ash tree today it is bright red (really bright red) a i swear it looks like a tic ,, I've been a arborist for 25+ yrs. and have never seen anything like it ,, I'm located in So. Eastern Pennsylvania (suburbs, very wooded area) any clue? as to it's identification

Answer
A picture would help greatly. Without a picture I can only guees

Possibly kin to the velvet mite--Balaustium putmani is a large velvety-red, tick-shaped mite  that overwinters as eggs underneath bark. Nymphs hatch in early May and begin feeding on mites, their eggs and other small, soft-bodied insects. They remain in fruit trees all season and are important early-season predators.
http://www.ocregister.com/ocregister/sports/ocoutdoors/nature/article_1393686.ph...

Or it maybe the  Boxelder Bug, Boisea trivittata. Nymphs are conspicuously bright red

http://www.ces.ncsu.edu/depts/ent/notes/O&T/houseplants/ort040e/img_swar.htm

If you can get a picture send it to [email protected] with "Expert picture" in the subject line and I will see if I can ID it. I am leaning toward the boxelder bug.