I don't know what's behind the 'formicicola' name, Harvey. I haven't noticed them being fond of ants, or ants of them. As for 'Lagriidae' vs Tenebrionidae, they were separate for more than a century until someone found that larvae of the former were practically indistinguishable from those of Australian Adelium, which have always been considered Tenebrionidae. Then they had a good look at the adults and found they weren't too different either!