Diaphanes lampyroides
鋸角雪螢 Snowy Window Firefly
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形態特徵：
雄螢體長約14-16毫米，體形比橙螢修長，觸角發達，鋸齒狀；前胸背板前方的窗比較狹小；發光器橫形，位於第六、七腹板。雌螢體長20-29毫米，完全無翅，觸角鋸齒狀，有別於橙螢的絲狀，發光器橫形，位於第六、七腹板。幼蟲黑褐色，不規則地散滿大量黃褐色小點，一對發光器位於第八腹節。
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分佈地點：
大帽山、城門水塘、大埔滘、鳳園、牛押山。
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成蟲活躍月份：
11
月下旬至1月上旬
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其他資料：
雄螢在日落後半小時過始活躍，常大量湧現，在空中慢飛並發出持續螢光，約30分鐘後開始消減，45分鐘後基本上完全消失。雌螢甚少見，在空曠地方爬上石塊或樹枝，腹面向上展露螢光。
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Morphological features
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Male body length 14-16 mm, body shape more slender than Diaphanes citrinus; windows located at the anterior region of pronotum are smaller and narrower; antennae well developed, serrate; light organ transverse, located at the 6th and 7th ventrite. Female body length 20-29 mm, completely wingless, antennae serrate, distinguised from the filiform antennae of Diaphanes citrinus; light organs transverse, located at ventrite 6 and 7. Larva dark brown, irregularly scattered with numerous small light brown spots.
Distribution
：Tai Mo Shan, Shing Mun Reservoir, Tai Po Kau, Fung Yuen, Ngau Ngak Shan
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Adult flight period
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Late November to early January
Other information
：Males become active 30 minutes after sunset, often occur in large number, flying slowly and showing continuous glow
. 30 minutes later, quantity drops and almost all disappear after further 15 minutes. Female is seldom encountered, found on rocks or branches in open areas, bending its abdomen upward, showing the light.
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雄 Male
雄 Male
雄 Male
雄 Male
雄 Male
雄 Male
雄 Male
雌 Female (右 right) 雄 Male (左 left)
雌 Female
雌 Female
雌 Female
雄蛹 Male pupa
雌蛹 Female pupa
幼蟲 Larva
幼蟲捕食蚯蚓 Larva predating a earthworm
幼蟲捕食蚯蚓 Larvae predating a earthworm
螢光軌跡 Light track
雄螢發光 Male glows鋸角雪螢 Diaphanes lampyroides from Hong Kong Fireflies on Vimeo.