Sep 26, 2015 - 10:58 AM
There really isn't anything that I am aware of called a "black flea". There are dog fleas and cat fleas, rat fleas, etc.
Red itchy spots sounds more like bed bugs to me. Bed bugs are very mobile, will bite you and then go hide somewhere. They are fairly large, but like to hide from view, so you can't see or find them.
I would highly recommend to educate yourself about bed bugs. Here is a link to our Bed Bug page - http://www.epestsupply.com/how_to_kil...
The other possibility is that it is a mite, or simply an "allergen". Allergens such as mold, pollen, etc also cause itching and bite like symptoms. Unfortunately, there is nothing you can really do about it. Here is a link to our page on Insects You Can't See - http://www.epestsupply.com/bugs-insec...