This tiny blond beetle was in a rather neglected rearing container (quart-sized food leftover container) in which I had been rearing a cranef*ly larva that was taking FOREVER to mature. I collected the larva and the pulpy wood I kept it in well over a year ago and, except for brief examinations of the larva, it was sealed for all that time. Well, since last inspection the larva obviously died and and rotted unrecognizably, and in its place was a population of tiny beetles -- this one and several [i]Miopta*chys flavi*cauda/i]. I don't know what sustained them all that time of if they were adult or larval when collected.

In this image the rule marks are in millimeters.