What is this abnormal bug.? It is pretty small, it is ALL BLACK, it's upper body...

It is pretty small, it is ALL BLACK, it's upper body reminds me of a grub with it's helmet principal and six ugly legs close together essential his head, but the body is elongated and narrow to a point like a silverfish. It also have what looks like yard goods hair coming out of the put money on - not like a silverfish, it truly looks like it have black cotton fibers coming off the butt. Anyone know what this strange thing is, I gotta know!
I hold a "basket" planter and it have...
Answers:    Without a picture I can't relieve, but maybe you can find it here:
http://davesgarden.com/guides/bf/