Rhagophthalmus hiemalis

寒冬凹眼螢 Wintry Starworm

形態特徵:雄螢體長約10毫米,翅膀特別瘦長,複眼巨大,並有一顯著凹陷,雄螢缺發光器。雌螢體長約9-13毫米,無翅,極似幼蟲,沒明顯色斑;晚間腹部端部向上反,露出巨大發光器,持續發光。


分佈地點:大帽山、沙田梅子林


成蟲活躍月份:12月下旬至3月上旬


其他資料:雌螢產卵後會包圍卵團,並發出33點光。雌螢在寒冷的冬季,攝氏12度低溫依然在野外放光吸引雄螢。幼蟲獵食馬陸。香港特有種。



Morphological featuresMale body length 10mm, elytra slender, compound eyes very large, with a prominent indentation. Light organ absent in adult male. Female body length 9-13 mm, wingless, larviform, no conspicuous colour mark. At night, posterior end of abdomen curls up to show its very large light organ, emitting continuous light.


DistributionTai Mo Shan, Mui Tsz Lam (Shatin)


Adult flight periodLate December to early March


Other informationAfter oviposition, female shows 33 light spots and surrounds the eggs. In cold winter when air temperature drops to 12 oC, female still shows its light in the wild. Larvae predate on millipedes. Endemic to Hong Kong.



雌 Female (左left) 雄 Male (右 right)
20100104-183333



Male
20140104-204614


Female
20121216-190305


Female
20121217-184311


Female
20100131-225037


Female
20140227-000650


幼蟲獵食馬陸 Larvae predating on a millipede20140323-212709