Missing for 42 years, flying squirrel resurfaces in Arunachal

A nocturnal flying squirrel has resurfaced in Arunachal Pradesh after going missing for 42 years.

GUWAHATI

A nocturnal flying squirrel has resurfaced in Arunachal Pradesh after going missing for 42 years.

The Namdapha flying squirrel (Biswamoyopterus biswasi) was last described in 1981 based on a single individual found in the 1,985 sq. km. Namdapha Tiger Reserve in Arunachal Pradesh’s Changlang district.

The failure of zoologists to locate the arboreal mammal during several expeditions thereafter generated two theories — that it could have been mistaken for the very similar red giant flying squirrel (Petaurista petaurista) sharing the same ecosystem or worse, become history.

Ten of these expeditions were by teams from Aaranyak, an Assam-based biodiversity conservation group, for a total of 79 days in 2021. A team from the group finally sighted the Namdapha flying squirrel in April 2022.

The team led by Firoz Ahmed included Sourav Gupta, a field researcher, and Sourav Mardi, a volunteer who visited various potential sites close to a river at night. Tajum Yomcha, a research officer with the Arunachal Pradesh Forest Department, aided the search for the elusive species.

“We sighted a small reddish and grizzled furry mammal high up on a tree. After months of scrutiny of the photographic evidence we gathered, experts are pretty much sure that the animal is the Namdapha flying squirrel,” Dr. Ahmed said.