Julia Arenson

CUNY Graduate Center | CUNY · Program in Anthropology

Objectives Geographic variation is an important feature among primates, but the mechanisms underlying it are not well understood. Macaques are geographically widespread and have been translocated to captive populations, providing a prime opportunity to evaluate changes in cranial form in response to a novel environment. Clinal variation was assesse...

The living guenons (Cercopithecini, Cercopithecidae) are speciose and widely distributed across sub-Saharan Africa but are poorly represented in the fossil record. In addition, the craniodental and skeletal similarity of the guenons has hampered the identification of fragmentary material, likely obscuring the taxonomic diversity represented in the...

Objectives: The little known guenon Cercopithecus dryas has a controversial taxonomic history with some recognizing two taxa (C. dryas and C. salongo) instead of one. New adult specimens from the TL2 region of the central Congo Basin allow further assessment of C. dryas morphology and, along with CT scans of the juvenile holotype, provide ontogene...

Objectives: The guenons (tribe Cercopithecini) are a diverse and primarily arboreal radiation of Old World monkeys from Africa. However, preliminary behavioral observations of the lesula (Cercopithecus lomamiensis), a little-known guenon species described in 2012, report it spending substantial amounts of time on the ground. New specimens allow us...

The living guenons (Tribe Cercopithecini) are largely an arboreal radiation, but the recognition of patas, vervets, and L’Hoest’s monkeys as a clade suggests a single evolutionary transition to terrestriality within the tribe. Recently, a new guenon species was discovered in the TL2 region of the Democratic Republic of the Congo, the lesula (Cercop...

The langurs (subfamily: Colobinae) of Southeast Asia have undergone many phylogenetic revisions. Incongruent results from recent genetic work suggest Trachypithecus pileatus and Trachypithecus geei are the result of ancient hybridization between Semnopithecus and Trachypithecus species. Geographically, these species are located between the distribu...

Bergmann’s rule predicts that body size increases with distance from the equator. This pattern has been noted in wild macaque populations, but captive populations relocated to new latitudes have not been examined for this pattern. They are therefore a prime population for analyzing whether Bergmann’s rule is influenced more by natural selection or...