I found at least 5 of these at the bottom of one of my black oil sunflower seed bird feeders.
There are three species of Oryzaephilus
this could be: O. acuminatus
, O. mercator
, or O. surinamensis
. See http://edis.ifas.ufl.edu/IN345
Based on the eye/temple length, it doesn't look like O. surinamensis