India, Aug. 1 -- Butterflies have captivated humans with their grace and beauty since time immemorial and have also inspired art and folklore.

However, butterflies are not just 'pretty insects'. They are pollinators and also food for other species. They thus offer valuable ecosystem services, which means there would be trouble if they are gone.

These insects are elusive, and there is still a great deal unknown about their behaviour and habitat.

Sarangapani Neog is a wildlife photographer who has spent several years observing and documenting butterflies across the forests of Northeast India.

He recently came out with the second edition of Butterflies Of Gibbon Wildlife Sanctuary, where he has chronicled the butterflies of the Hollongap...