Concept notes: The Arunachal macaque is a primate species found in the high-altitude forests of Arunachal Pradesh, India. It is characterized by its large size, brown fur, short tail, and distinctive orange-brown tuft of fur on its head. This species is an important part of the region's biodiversity and is adapted to the cold, mountainous environment.
Explanation: The Arunachal macaque (Macaca munzala) is a primate species endemic to the high-altitude forests of Arunachal Pradesh, a state in northeastern India. This species was first described in 2005 and is known for its distinctive physical features, which include a large body size, brown fur, a short tail, and a prominent orange-brown tuft of fur on its head. These characteristics make the Arunachal macaque easily distinguishable from other macaque species found in India and elsewhere.
The Arunachal macaque is adapted to the cold, mountainous environment of its habitat, which ranges from 2,000 to 4,000 meters above sea level. This adaptation is reflected in its thick fur, which helps it survive in the harsh climatic conditions of the region. The species is also known for its social behavior, living in groups that can range from 20 to 40 individuals. These groups are typically led by a dominant male and consist of females, their offspring, and sometimes subordinate males.
The description provided in the question, "big and brown with a short tail and orange-brown tuft of fur on its head," aligns perfectly with the physical characteristics of the Arunachal macaque. This makes it the correct answer among the given options. It is important to note that while monkeys are a broad category of primates, the Arunachal macaque has specific features that set it apart from other species, making it a unique and identifiable primate.
Understanding the characteristics of the Arunachal macaque is crucial for students studying the biodiversity of Arunachal Pradesh and the broader region of northeastern India. This knowledge is particularly relevant for those preparing for competitive examinations such as the UPSC and State PSC, where questions on regional wildlife and biodiversity are common. The Arunachal macaque serves as an excellent example of the unique species that contribute to the rich biodiversity of the region, highlighting the importance of conservation efforts to protect these endemic species and their habitats.