Hisserdude
Dynastes
One of the largest US darklings, quite bulky and also very easy to rear and forgiving compared to their more finicky relative, Eleodes spinipes ventricosa. Lovely species, males are relatively skinny and have noticeable elytral extensions (mucros), whereas females are pretty rotund. 
A very nice darkling species for sure, one I hope will stay established in culture for years to come.
A very nice darkling species for sure, one I hope will stay established in culture for years to come.