A new lichenicolous fungus Buelliella indica colonising on the thallus of Graphis longiramea is described from the state of Nagaland, a part of the Indo-Burma biodiversity hotspot region in India. It is characterised by its brown epihymenium, much smaller ascospores with dimensions of 11.5–13.8 × 4.8–6 µm and the new host Graphis.