Male body length 16-18 mm, antennae serrate, small and short; compound eyes very large; elytra rim yellowish brown, a pair of light organs located at 7th ventrite. Female body length 24-35 mm, broad and compressed, light yellowish brown, a pair of C shape light organ located at ventrite 8. Larva broad and compressed, tergites almost all black, except lateral sides of last tergite and anterior part of pronotum.
Distribution
：
Tai Mo Shan, Tai Tung Shan.
Adult flight period
：
Late October to early December
Other information
：
Larva walks very fast, predates on earthworm
.
Male is a weak flyer, only shows weak light. Female lays flat and displays bright light at night. Only recorded above 600m altitude.
Endemic to Hong Kong.
雄 Male 雌 Female 幼蟲 Larva 雄 Male 雄 Male 雄 Male 雌 Female 雌蛹 Female pupa 雌蛹 Female pupa 幼蟲 Larva 幼蟲捕食蚯蚓 Larvae predating earthworm 幼蟲捕食蚯蚓 Larvae predating earthworm
