What distinct pubic hair feature characterizes adult males of *Oreonax flavicauda*?
Answer
Males display a prominent, long, yellowish pubic hair tuft, which is shorter in females.
The Yellow-tailed woolly monkey, *Oreonax flavicauda*, exhibits clear sexual dimorphism concerning their pubic region hair. Adult males of this species are distinguished by the presence of a prominent, long tuft of yellowish pubic hair. In stark contrast, females of *O. flavicauda* possess a much shorter version of this feature. Females are further distinguished by having a long, prominent clitoris, highlighting several physical traits that separate the sexes in this species.

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