Fri Apr 25 10:51:53 UTC 2025: ## Indian Scientists Reshape Understanding of South Asian Treeshrews
**GUWAHATI, INDIA – April 25, 2025** – Scientists from the Zoological Survey of India (ZSI) have rewritten the classification of South Asian treeshrews, a group of small, insectivorous mammals often mistaken for squirrels. Using over a century of museum specimens, the team’s research, published in *Ecology and Evolution*, clarifies the morphological distinctions between three species: the Madras treeshrew, the northern treeshrew, and the Nicobar treeshrew.
The study, led by Dr. Manokaran Kamalakannan, employed advanced morphometric analysis of cranial and external traits. The findings overturn long-held beliefs, most notably revealing that the Nicobar treeshrew, previously thought to be the smallest, is actually the largest South Asian treeshrew and the third-largest globally. The research highlights significant morphological differences between the three species, even where slight overlaps in size and shape previously existed.
Co-author Dr. Nithyanandam Marimuthu emphasized the statistical strength of the findings in separating the species. Dr. Mukesh Thakur stressed the need for future genetic studies to further solidify the phylogenetic understanding of these mammals. ZSI Director Dr. Dhriti Banerjee emphasized the importance of accurate taxonomy for effective conservation strategies, particularly for insular species like the Nicobar treeshrew, which faces increasing ecological threats. The research underscores the invaluable role of museum collections in advancing scientific knowledge and conservation efforts.
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