Oculogryphus chenghoiyanae

鄭凱甄怪眼螢 Chenghoiyan Ototretine firefly

形態特徵：雄螢體長約5 毫米，複眼巨大，有一顯著凹陷；外貌似凹眼螢，但絲狀觸角只有11節，鞘翅較短寬。雌螢無翅，淡黄色，胸背板和第1-4塊腹背板有紅褐色斑。腹部第七節有一對發光器，位於兩側。

分佈地點：地塘仔。

成蟲活躍月份：4月下旬至6月上旬

其他資料：不像凹眼螢，雌螢發光時，腹部不上舉。紫外光照射下，雌螢全身發出藍綠色熒光。在黑暗環境中，可見雄螢腹部發出兩點微弱光點。香港特有種。被國際自然保育聯盟列為極危。


Morphological features：Male body length 5 mm; compound eyes very large, with a prominent indentation. General appearance resembles Rhagophthalmus, but the filiform antennae are 11-segmented, elytra are shorter and boarder.
Female wingless, ground colour pale yellow, with flecked reddish brown markings on all thoracic tergites and 1-4th abdominal tergites. A pair of light organs located at the lateral side of 7th abdominal segment.

Distribution：Tei Tong Tsai.

Adult flight period：Late April to early June

Other information：Female does not raise its abdomen as Rhagophthalmus when displaying light. Female fluoresce in bluish green from body under ultraviolet illumination. A pair of very dim light spots can be observed from the male's abdomen in darkness. Endemic to Hong Kong. Listed as Critically Endangered by The International Union for Conservation of Nature.



雄 Male
20170509-222426A

雄 Male20170509-222425B

雄 Male
20170511-002831

雌 Female
QN9C9697

雌 Female
20170512-195148A

雌 Female
20170508-202841

雌 Female
20170519-202337

雌 Female (紫外光照射 Under UV)
20220427-201504-yvB