Final answer:
Haplorrhines exhibit more varied anatomy compared to Strepsirrhines due to their broad group of diurnal primates with diverse anatomical adaptations including variations in tails and reliance on vision over olfaction.
Step-by-step explanation:
The anatomy of haplorrhines is considerably more varied than that of the Strepsirrhini largely because haplorrhines encompass a broader group of primates, including tarsiers, New World monkeys, Old World monkeys, apes, and humans. This diversity among haplorrhines is reflected in a range of anatomical adaptations that support different lifestyles. For instance, many haplorrhines are diurnal and rely more on vision than olfaction, contrasting with the typically nocturnal and olfactory-oriented strepsirrhines. Moreover, haplorrhines do not possess the toothcomb or grooming claw found in strepsirrhines, indicating different feeding and grooming behaviors.
The Haplorrhini or Anthropoids are split into Simiiformes, which include the New World monkeys of Central and South America, and the Catarrhini, which include Old World monkeys and apes found in Africa and Asia. The diversity of haplorrhines is further exemplified by variations in physical adaptations, such as the prehensile tails of New World monkeys and the tailless, often terrestrial nature of apes and humans.