米埔屈翅螢 Pteroptyx maipo | 香港螢火蟲 Hong Kong Fireflies

Pteroptyx maipo

米埔屈翅螢 Maipo Bent-winged Firefly

形態特徵：體長6.8-7.5毫米，鞘翅末端黑色，強烈向下及向內屈；雄螢發光器位於整個第6腹板和第7腹板。雌螢體長7.2-8.5毫米，與雄螢外表近似，複眼較細小，發光器位於整個第6腹板，鞘翅末端黑色，沒有向下及向內屈。

分佈地點：米埔、天水圍

成蟲活躍月份：4-9月

其他資料：雄螢飛行時發出複式閃光，閃光持續約300毫秒、間距約1.7秒；每次閃光由7-16個緊密連接的脈冲組成。雌螢常停留在葉上，只偶爾飛行。幼蟲在紅樹林泥灘取食擬沼螺Assiminea sp. 和耳螺 Auriculastra sp.。在廣東省西部沿岸及海南島亦有分佈。被國際自然保育聯盟列為頻危。

Morphological features：Male body length 6.8-7.5 mm, elytra tips black, strongly deflexed ; light organs occupying almost entire ventrite 6 & 7 in male. Female body length 7.2-8.5 mm, resembles male, but with smaller compound eyes, light organ only covers ventrite 6, elytra tips black, not deflexed.

Distribution：Mai Po, Tin Shui Wai,

Adult flight period：April to September

Other information： Flying male displays train flash, flash duration about 300 ms, inter-flash duration about 1.7ms. Each flash is composed of 7-16 closely linked pulsations. Larva feeds on two small snails — Assiminea sp. and Auriculastra sp.. Also recorded along coastline of Western Guangdong Province and Hainan. Listed as Endangered by International Union for Conservation of Nature.