what are differens beetwen trioceros qudricornis quadricornis and quadricornis gracilior?thanks

I'm pretty sure there's more dark meat in the q. gracilior....

Apparently when the subspecies was added, Klaver based it on differences in lung type/shape between northern and southern populations of C. quadricornis. Without disecting your pets, I believe males with 6 horns (or more) and more rounded scales in the "beard" than the triangle shaped scales are also characters used to identify the subspecies.