Probably C. brevis due to the darker coloration and eyes; C. cavifrons eyes are larger than C. brevis eyes in proportion to the head, it is also lighter than brevis (pale brown vs dark brown). Although this picture does not show many definitive features otherwise. C. brevis is the larger species (~5mm vs ~3-4mm, without wings). Wing venation can be used to differentiate the two although this is sometimes unreliable. Would recommend you upload a picture of the wings or examine some wings (assuming you still have a bunch lying around) for confirmation.

This species is also closely associated/almost exclusively resides in structures/man made environments (it's not native to Florida), so you might want to get an inspection done/look for any signs of an infestation if you found these indoors.

Moved from Epifamily Termitoidae - Termites.

Moved from ID Request.

Yes, a termite reproductive. I'm not sure how specific an ID will be possible from this shot, but let's see what the experts have to say.