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Can anyone help with ID of these beetles? Seen in KTP in March 2010.

I found this little guy a while ago.

At first glance I thought this was a pill millipede but I think it might be a roach of some kind. Any ideas?

Lee, I reckon that you are right. Immature Pyrgomorphids generally differ from the adults in colour and behaviour. For one thing, in the first few stages the nymphs (or larvae, modern entomologists are sceptical about the validity of the distinction, but suit yourself, it is harmless at worst), the nymphs as I say, tend to swarm somewhat. Those that emerge from one or a few neighbouring egg purses, will stick together and feed and move in a mass. Such youngsters commonly are shiny, waxy black with little spots of vivid red or yellow. In a mass like that they scare off many of their possible predators, and naive predators quickly learn that there is not much to catch and eat apart from a sickening, poisonous secretion.
Many insects with warning colouration form such defensive masses. You probably have seen similar groups of red Pyrrhocorid stinkbug nymphs on plants from time to time.
As the young Pyrgomorphids grow and pass through their various instars, they become less sociable and the red spots in their colouration become larger until they take over and develop into the adult pattern. I should guess that the one in the picture was in its last, or just possibly second last, instar.
I hope that someone finds that helpful.
Cheers.
Jon

WOW! Thanks for your guidance there, Jon! Sharing your knowledge in this field is highly appreciated and welcome!

Those are not beetles, but bugs. By this I do not mean goggas, but bugs as in stinkbugs, plant bugs, bedbugs, sonbesies and all those suckers. In short the Hemiptera. The two in the picture seemed to be mating in their usual tail-to-tail attitude. You often find large numbers of Pyrrhocoridae on a plant, and then the immature bugs often stick close together in crowds in much the same way as immature Pyrgomorphid foam grasshoppers do. They do it largely for the same reason, but in the case of bugs there often is an added detail in that the parents will defend the flock of youngsters from parasitic wasps and similar enemies.
Cheers.
Jon