I think I might have missed the record by less than 2 mm. I've seen a super-exceptional 70.75 mm tityus, but don't know if this species is able to exceed that. In any case, anything between 65-70 mm can be considered an exceptional size for tityus. Over the years, I've produced many 60-65 mm specimens, but the 66-69 mm range have been considerably fewer in number. This seems to be the way it is with a lot of beetle species; there's an "average" maximum size, and then anything beyond that only constitutes a quite small percentage of a population. This happens both in the wild and in captive rearing.