Guwahati: A tiny jumping spider discovered in the forests of Assam’s Barak Valley has opened a new window into India’s lesser-known biodiversity, placing the state firmly on the country’s arachnological research map.
A study by Monica Chetry and Parthankar Choudhury of Assam University, Silchar, in collaboration with noted arachnologist John T.D. Caleb of Saveetha University, Chennai, has reported the first Indian record of Colyttus bilineatus—a jumping spider species previously known only from Southeast Asia. The findings have been published in the international peer-reviewed journal, Journal of Threatened Taxa.
The spider was documented from Loharbond in Assam’s Cachar district, within an Inner Line Reserved Forest of the Barak Valley. Until now, Colyttus bilineatus had been recorded only from Indonesia, Malaysia, and Singapore, making its discovery in Assam a significant eastward extension of its known geographical range.
According to the researchers, the find underscores how Assam’s forests—part of the Indo-Burma biodiversity hotspot—remain vastly underexplored, especially when compared with intensively studied regions such as the Western Ghats.
The Barak Valley’s landscape of mixed evergreen and deciduous forests, dense canopy cover, and abundant bamboo growth offers ideal microhabitats for such elusive and lesser-known species.
The authors note that the discovery may indicate a much wider natural distribution of the spider across South and Southeast Asia, or alternatively, highlight major gaps in biodiversity surveys in northeastern India.
Collected during routine fieldwork using simple sampling methods, the finding also underlines the importance of sustained, ground-level research led by regional institutions like Assam University. Though small in size, jumping spiders play a crucial ecological role as active predators, helping regulate insect populations within forest ecosystems.
At a time when conservation debates often focus on large mammals and birds, the work of Chetry, Choudhury, and Caleb serves as a reminder that Assam’s biological richness is equally defined by its smallest inhabitants—many of which remain undocumented.
For Assam, the study reinforces a growing scientific message: the state’s forests are not only rich in biodiversity—they are still yielding species new to India.