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The drill is a short-tailed monkey up to 70 cm (28 in) long, similar in appearance to the mandrill, but lacks the bright blue and red on the face of that species. It has high sexual dimorphism in weight, with males weighing up to 20 kg (44 lb) and females up to 12.5 kg (28 lb). [4] A close-up of face. The body is overall a dark grey-brown.
The mainland drill (Mandrillus leucophaeus leucophaeus) is a subspecies of the endangered drill. It is distinguished by ringed yellow and black coloring on its crown, and is otherwise similar to the Bioko drill.
Mandrillus leucophaeus skull Both species of Mandrillus develop extremely large muzzles, prominent nasal ridges and paranasal swelling (swelling in the area adjacent to the nostrils). The size and colour of the paranasal swellings correlate to male dominance and rank, while the size of nasal ridges is a way of attracting mates. [ 18 ]
The Bioko drill (Mandrillus leucophaeus poensis) is a subspecies of the drill, an Old World monkey. It is endemic to Bioko Island, Equatorial Guinea, [4] located off the west coast of Africa. [5] The drill is one of the largest monkey species, and is considered endangered. [5]
The mandrill (Mandrillus sphinx) is a large Old World monkey native to west central Africa. It is one of the most colorful mammals in the world, with red and blue skin on its face and posterior. The species is sexually dimorphic, as males have a larger body, longer canine teeth and brighter coloring. It is the largest monkey in the world.
Mandrillus leucophaeus poensis; Mainland drill; Mandrill This page was last edited on 2 April 2018, at 13:22 (UTC). Text is available under the Creative Commons ...
Papionini is a tribe of Old World monkeys that includes several large monkey species, which include the macaques of North Africa and Asia, as well as the baboons, geladas, mangabeys, kipunji, drills, and mandrills, which are essentially from sub-Saharan Africa (although some baboons also occur in southern Arabia). [1]
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