They are sexually dimorphic, as the females grow larger than the males.
Adults are sexually dimorphic with respect to the presence of horns.
No evidence is known to be sexually dimorphic in both college and adult convenience samples.
They are sexually dimorphic, having two distinct forms for the male and female.
The species is sexually dimorphic, with males 50% larger than females.
Because the horns were not sexually dimorphic, their role in defense seems most likely.
It is not sexually dimorphic, as males and females are the same size.
Their presence does not appear to be sexually dimorphic, although males may have longer ones.
Males and females of both color forms are sexually dimorphic.
They are sexually dimorphic, with the males usually being much larger than the females.