黃頭脈翅螢 Curtos fulvocapitalis | 香港螢火蟲 Hong Kong Fireflies

Curtos fulvocapitalis

黃頭脈翅螢 Yellow-headed Double Flash

形態特徵：體長6-9毫米。頭頂黃褐色，有些個體頭頂較深色；鞘翅有一道顯著縱隆脊;雄螢發光器位於整個第6腹板和第7腹板。雌螢與雄螢外表近似，複眼較細小，發光器位於整個第6腹板。

分佈地點：梧桐寨河谷、沙螺洞、林村谷、蓮澳。

成蟲活躍月份：5-6月

其他資料：多在低地棄耕農田出現，有時數以千計同時出現。雄螢閃光相隔約2.5秒，每個閃光維持約0.1秒，由兩個緊接的脈沖組成。

Morphological features：Body length 11-12 mm, vertex yellowish brown, some individuals have darker vertex; elytra bearing a prominent longitudinal ridge; light organs occupying ventrite 6 & 7 in male; only ventrite 6 in female. Female resembles male, but with smaller compound eyes.

Distribution：Ng Tung Chai Valley, Sha Lo Tung, Lam Tsuen Valley, Lin Au.

Adult flight period：May to June.

Other information：Often found in lowland abandoned farmland, sometimes thousands appear at the same time. Flying male displays flashes with about 100 ms duration and inter-flash intervals of 2.5 s, each flash is composed of 2 closely connected pulses