Strepsirhines
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Transcript of Strepsirhines
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Strepsirhines Haplorhines
Lorisoidea“Mainland Africa”
Lemuroidea“Malagasy”
TarsioideaAnthropoidea
Cercopithecoidea“Old World Monkeys”
Platyrrhines
Hominoidea“Apes and Humans”
Lorises and Galagos
LemursCatarrhines
Tarsiers
Cebids, Atelids, and Callitrichids
Ceboidea“New World Monkeys”
Colobines andCercopithecines
Hylobatids, Pongids,and Hominids
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StrepsirhinesMalagasy Strepsirhines
Madagascar
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StrepsirhinesMalagasy Strepsirhines
• Characteristics:– dental tooth comb– grooming claw on
second digit of feet– postorbital bar– no postorbital closure– most have a
mandibular symphysis – unfused frontal bone– variations in foot
anatomy related to locomotion
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Cheirogaleidae• 5 extant genera• Examples:
– Pygmy Mouse Lemur (Microcebus myoxinus)
– Coquerel’s Dwarf Lemur (Mirza coquereli)
– Fat-tailed Dwarf Lemur (Cheirogaleus medius)
• Characteristics:– Average weight ranging from 0.03-
0.6kg– Nocturnal– Arboreal quadrupeds– Microcebus myoxinus is smallest
living primate– Cheirogaleus medius hibernates for
up to 6 months– Most females only receptive to
mate for a few hours each year
Pygmy Mouse Lemur
Dwarf Lemur
Fat-tailed Dwarf Lemur
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Lemuridae• 4 extant genera• Examples:
– Ring-tailed Lemur (Lemur Catta)
– Ruffed Lemur (Varecia variegata)
– Gray Bamboo Lemur (Hapalemur griseus)
• Characteristics:– Average weight ranging
from 0.6-2.2 kg– Diurnal– Mostly arboreal quadrupeds– Hapalemur uses some
Vertical Clinging and Leaping (VCL)
Ring-tailed Lemur
Bamboo Lemur
Ruffed Lemur
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Lepilemuridae• 1 extant genus• Examples:
– White-footed Sportive Lemur (Lepilemur leucopus)
• Characteristics:– Average weight ranging
from 0.5-1.0kg– Nocturnal– Vertical Clingers and
Leapers (VCL)– Reingests its feces to get
broken-down cellulose
Sportive Lemur
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Indriidae• 3 extant genera• Includes:
– Woolly Lemur (Avahi)– Sifaka (Propithecus)– Indri (Indri indri)
• Characteristics:– Average weight ranging from
0.7-6.8 kg– Specialized leapers with long
hindlimbs, feet, and hands– All specialized VCL’s– Avahi is nocturnal– Propithecus moves bipedally
on the ground– Indri has no tail
Sifaka
Indri
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Daubentoniids
• Aye-aye (only extant species)• Characteristics:
– enormous ears– rodent like incisors– large clawed digits, except for hallux– third digit is extremely long and
slender– nocturnal– quadrupeds
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Strepsirhines
• Includes:– Galagidae (bushbaby)– Lorisidae (potto, slow loris,
and slender loris)
• Characteristics:– grooming claw on the second
digit – nocturnal– arboreal quadrupeds– dental tooth comb
Mainland Africa Strepsirhines
Galagos and Lorises
Lorises
GalagoLoris
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Galagos and Lorises• Examples of Galagos:
– Greater Bushbaby (Otolemur garnetti)– Senegal Bushbaby (Galago senegalensis)
• Characteristics:– Average weight ranging from 0.06-1.1kg– elongated calcaneus and navicular bones– VCL’s– Demidoff’s Bushbaby one of the smallest living
primates
• Examples of Lorises:– Slender Loris (Loris tardigradus)– Slow Loris (Nycticebus coucang)
• Characteristics:– Average weight range from 0.3-1.1kg– Slow and stealthy quadrupeds
Greater Bushbaby
Slender Loris Slow Loris