There seems to be a boundary between these concepts, but I can't quite work out where it is. Camouflage and mimicry are deceptions; telling untruths is deceitful.
In common usage we would say, 'The bowler deceived the batsman in flight,' but do we classify a spin bowler as attempting deception, or deceit? Alternatively, if a fielder falsely claims a catch this is deceit, not deception.
There seems to be ideas of volition and purpose related to the difference, but there is more and I can't see it. Camouflage and mimicry in animals is certainly deceptive, but is almost always without individual volition. Predators and prey have different takes on it, but it is based on hardwired behaviours and evolved form and colour. The purpose is survival. Human camouflage is a matter of volition. In war, camouflage or mimicry have the same purpose as in other animals – enable killing, avoid being killed. I suspect this falls within deception. The extreme deceit end of the spectrum is deliberate, misleading behaviour designed to gain an (undeserved?) advantage over another. Any ideas about that boundary?