Male body length 12-18 mm, windows at the posterior part of the pronotum small; elytra with orange rim, outer margin broader; light organs transverse, located at 6th and 7th ventrite. Female body length 28 mm, orange in colour, bearing a pair of short and small elytra, light organs rounded, one pair at 6th abdominal ventrite, another pair at 7th. Larva black, irregularly scattered with small light brown spots, a pair of light organs located at 8th abdominal segment. Lateral sides of the last 2 tergites rounded, different from the more straight lateral sides of the last 2 tergites in Pyrocoelia lunata.
Commonly seen in countryside, farmlands, abandoned farmlands, fish ponds, wetlands, occasionally even in the city, but less commonly seen in woodland areas.
Adult flight period
March to December
is commonly seen, but not in large number, usually in one to a few individuals, flying slowly, showing continuous glow, activity duration long, could be seen till midnight. Female is very rarely recorded. Larva feeds on snails.