Peter Grubb’s Systematics of Red Colobus Monkeys (subgenus Piliocolobus)
An unpublished analysis by the late Peter Grubb on the systematics of red colobus monkeys (subgenus Piliocolobus) is now available.
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Geographic range, taxonomy, and conservation of the Mount Kilimanjaro guereza colobus monkey (Primates: Cercopithecidae: Colobus)
New publication
Butynski & De Jong (2018) Geographic range, taxonomy, and conservation of the Mount Kilimanjaro guereza colobus monkey (Primates: Cercopithecidae: Colobus). Hystrix.
Abstract
The Mount Kilimanjaro guereza colobus monkey is endemic to northern Tanzania and southern Kenya, occurring on and near Mount Kilimanjaro/Mount Meru. Currently referred to as “Colobus guereza caudatus Thomas 1885”, this monkey is geographically very isolated, and phenotypically distinct from all other taxa of guereza monkeys. As such, application of the “Phylogenetic Species Concept” resurrects the Mount Kilimanjaro guereza to specific rank as Colobus caudatus. The geographic range of C. caudatus is small (ca. 4030 km2) and in decline, as is the number of individuals and area of habitat. Colobus caudatus qualifies as an IUCN Red List globally “Endangered” species, as a nationally “Endangered” species in Tanzania, and as a nationally “Critically Endangered” species in Kenya. Colobus caudatus is Kenya’s most threatened species of primate. Recommendations for research and conservation actions are provided.
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Adult female Mount Kilimanjaro guereza Colobus caudatus at Kitobo Forest Reserve, central south Kenya. Notice that the white tail tuft comprises about 80% of the tail. Photograph by Yvonne de Jong and Tom Butynski.
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Pocket Identification Guide of the Primates of East Africa
New survey reveals… Laikipia’s patas monkey in decline
The results of the latest eastern patas monkey survey in eastern Laikipia (central Kenya) are now available. Read the abstract of the report below or go straight to the full report (De Jong & Butynski, 2017).
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Distributions in Uganda, Kenya, and north Tanzania of members of the Günther’s dik-dik Madoqua (guentheri) and Kirk’s dik-dik M. (kirkii) species groups, regions of sympatry, records of aberrant-coloured individuals, and comment on the validity of Hodson’s dik-dik M. (g.) hodsoni
New article
De Jong, Y.A. & Butynski, T.M. 2017. Gnusletter 34: 11-20
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