Pyrocoelia analis

寬緣窗螢 Rimmed Window Firefly

形態特徵:雄螢體長12-18毫米,背板前方窗口細小,鞘翅邊緣橙色,外緣色斑較寬,發光器橫型,位於第六、七腹板。雌螢體長28亳米,橙色,有一對短小鞘翅,第六、七腹板各有一對點狀發光器。幼蟲黑色,散佈不規則淺褐色小點,一對發光器位於第八腹節兩側,最後兩節背兩側板皆弧圓,有別於弦月窗螢幼蟲最後兩節背板兩側近平直。


分佈地點:在鄉郊、農田、棄耕農田、漁塘濕地均常見,間中在市區亦有紀錄,但較少在林區出沒。


成蟲活躍月份:3月至12


其他資料:雄螢雖常見,但數量不多,通常只見一至數隻,在空中慢飛、發持續的光;晚間活動時間較長,至午夜仍見。雌螢極罕見幼蟲取食蝸牛。



Morphological featuresMale body length 12-18 mm, windows at the posterior part of the pronotum small; elytra with orange rim, outer margin broader; light organs transverse, located at 6th and 7th ventrite. Female body length 28 mm, orange in colour, bearing a pair of short and small elytra, light organs rounded, one pair at 6th abdominal ventrite, another pair at 7th. Larva black, irregularly scattered with small light brown spots, a pair of light organs located at 8th abdominal segment. Lateral sides of the last 2 tergites rounded, different from the more straight lateral sides of the last 2 tergites in Pyrocoelia lunata.


DistributionCommonly seen in countryside, farmlands, abandoned farmlands, fish ponds, wetlands, occasionally even in the city, but less commonly seen in woodland areas.


Adult flight periodMarch to December


Other informationMale is commonly seen, but not in large number, usually in one to a few individuals, flying slowly, showing continuous glow, activity duration long, could be seen till midnight. Female is very rarely recorded. Larva feeds on snails.



Male
20121214-214702


Female
20130911-233418


幼蟲 Larva
20091108-193729


Male
20120706-00591943


Male
20060331_20-43-38


Male
20120414-21045567


螢光軌跡 Light track
20120415-21285563


Female20130915-005909


Female
20130911-233539


雌蛹 Female pupa
20130906-231159


成熟幼蟲 Mature larva20091108-193729


年幼幼蟲 Young larva
20130530-205914


幼蟲捕食蝸牛 Larva predating a snail
20120416-22544509


幼蟲未節 Terminal segments of a larva
20110925-14125581