Dictionary > Haplorrhine

Haplorrhine

Definition
noun, plural: haplorrhines
Any of the primates characterized mainly by being dry-nosed because of a lack of a rhinarium
Supplement
Haplorrhines belong to the suborder Haplorrhini of the order Primates. The suborder Haplorrhini is a suborder of primates consisting of the following families: Tarsiidae (tarsiers), Callitrichidae (marmosets and tamarins), Cebidae (capuchins and squirrel monkeys), Aotidae (night or owl monkeys ), Pitheciidae ( titis, sakis, and uakaris), Atelidae (howler, spider, and woolly monkeys), Cercopithecidae (Old Word monkeys), Hylobatidae (lesser apes), and Hominidae ( great apes and humans).
The haplorrhines are mainly characterized by their lack of rhinarium. The rhinarium is the skin surface that surrounds the external openings of the nostrils. It is found in another subgroup of primates, the strepsirrhines. The haplorrhines are as such referred to as dry-nosed primates. They have a dry area between the upper lip and the nostrils. Another distinctive feature of haplorrhines is the lack of a functional terminal enzyme that is involved in manufacturing vitamin C. This enzyme is present and functional in strepsirrhines. Thus, the haplorrhines must derive their vitamin C from their diet. The brain-to-body ratio is also higher in haplorrhines than in strepsirrhines.
Word origin: Greek haplóos (“simple”) + rhís (“nose”)
Variant:

  • haplorhine

Scientific classification:

  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Mammalia
  • Order: Primates
  • Suborder: Haplorhini (Pocock, 1918)

See also:


You will also like...

Wart-like leaf galls on grape leaves
Plant Cell Defense

Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..

Control of body movement
Control of Body Movement

Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..

Early Mammals on Earth
Early Mammals on Earth

The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..

human brain structure
The Conscious & Unconscious Nervous System

This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

Still freshwater and plants
Still Freshwater & Plants

Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

Energy pyramid
Freshwater Community Energy Relationships – Producers & Consumers

This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

Related Articles...

No related articles found

See all Related Topics