body length 7.3-7.8 mm, pronotum bearing a pair of prominent protuberances ; light organs occupying ventrite 6 & 7 in male; only ventrite 6 in female. Female body length 7.9-9.0 mm, resembles male, but with smaller compound eyes, light organ only covers ventrite 6.
Ng Tung Chai Valley
Adult flight period
： Flying male displays simple flash pattern composed of repeated pulsations with duration of 72 ms and inter- pulse interval of 110–140 ms. Female prefers to stay on foliage and only occasionally flies. Endemic to Hong Kong.
雄 Male 雌 Female 雄 Male 雄 Male
雄 Male 雄 Male 雌 Female
雌 Female 雌 Female 雌 Female 雌 Female 雌 Female 雄螢閃光模式 Male flash pattern 雄螢閃光 Male flashes