Scientists have announced the discovery of two new species of fireflies in Meghalaya, marking a significant addition to India’s biodiversity records. This exciting find fills a gap of over a century in the documentation of the genus Diaphanes in the country and represents the first formal scientific records of fireflies from Meghalaya.
The Newly Described Species
The two species belong to the genus Diaphanes and have been named Diaphanes meghalayanus and Diaphanes mawlynnong.
Diaphanes meghalayanus, named after the state of Meghalaya, is distinguished by its striking black-and-vivid-red pattern on the pronotum (the plate-like structure behind the head), brownish-yellow wing covers (elytra), and a slender reproductive structure. Males of this species emit faint, pulsating green light while flying 10–15 meters above the ground.
Diaphanes mawlynnong, named after the renowned Mawlynnong village — often called “Asia’s cleanest village” — features rare bead-like antennae, a bright red central plate, and pale brown wing covers. Notably, a flightless female of this species was discovered hiding in a soil crevice beneath a boulder.
With these additions, the total number of known Diaphanes species in India now stands at 15.
Discovery Details
The specimens were collected from the East Khasi Hills region, including undisturbed semi-evergreen forests, bamboo thickets, betel nut plantations, and areas near rocky streams around Mawlynnong. Researchers gathered them during cool winter nights in February, when temperatures ranged between 18–20°C with high humidity — ideal conditions for observing glowing fireflies.
The discovery team was led by Emma Magdalene Nonglang from Assam Don Bosco University, in collaboration with researchers from India and Sri Lanka. They employed hand nets and visual surveys to locate the bioluminescent insects.
This breakthrough is particularly noteworthy because no prior museum specimens or published scientific records of fireflies existed for Meghalaya. The last major descriptions of Indian Diaphanes species were made more than a hundred years ago.
Ecological Significance
Fireflies are highly sensitive bio-indicators, thriving only in dark, pollution-free environments with healthy ecosystems. Their presence in Meghalaya highlights the ecological value of the pristine forests in the Indo-Burma biodiversity hotspot. Locally, the Khasi people refer to these insects as “Niangbading.”
The discovery underscores the importance of community-led conservation efforts, especially in areas like Mawlynnong, where villagers have long maintained exceptional environmental stewardship.
The full scientific description of these two new species was published in April 2026. These glowing beetles not only enrich India’s entomological knowledge but also shine a light on the hidden wonders still waiting to be uncovered in Northeast India’s lush landscapes.
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