Dryadaula terpsichorella - Hodges#0307.1
(Hawaiian Dancing Moth).
Size: approx. 4 mm. Photo: 06/14/12.

The little Dryadaula terpsichorella is an introduced species to Florida. The literature states "The common name is derived from characteristic circular gyrations, with a crablike sideways gait". I had this specimen originally listed as Caribbean scavenger moth, which seems incorrect. 
bug guide (this photo):