Presbytis rubicunda (Maroon Langur) is a species of primates in the family Old World monkeys. They are found in the indo-malayan realm. They are herbivores. Individuals can grow to 1047 mm.
Definition: External ear (pinna) length is a standard measurement in mammalogy, usually measured in a living mammal or a fresh mammal carcass. External ear length is measured from the base of the notch at the bottom of the ear to the apex (highest point) of the ear.
Definition: Number of individuals in a group that spends the majority of their time in a 24 hour cycle together where there is some indication that these individuals form a social cohesive unit.