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.
Tai Mo Shan, Tai Tung Shan.
Adult flight period
Late October to early December
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.