Aquatica leii

雷氏萤  Lei’s Swamp Flasher

Morphological features：Male body length 6.7-7.5 mm, compound eyes very large, elytra rims yellowish ; light organs almost completely occupy ventrite 6 and anterior half of ventrite 7; colour of elytra lighter than that of Aquatica ficta. Female resembles male, except generally large than male, and only one light organ occupying ventrite 6. Tergites of larvae black, with dense and irregularly distributed small yellow spots, and 4 large yellow marks along the posterior margin of each tergite. There is a pair of branched gills protruded from each abdominal segments. A pair of ight organs located at the lateral sides of ventrite 8, rounded.

Distribution：Suifeng Village and Xitou Village in Guangzhou; Xinyi in Maoming, Guangdong; Tai Po Kau, Fung Yuen, Sha Lo Tung, Shui Zhan Tian, Jiao Keng, Lam Tsuen Valley, and Wong Yiu Tan in Hong Kong.

Adult flight period：April to September.

Other information：Larva aquatic, live in slowly running, shallow water with soft bottom, feed on aquatic snails; mature larvae climb up to the wet soil and make hole for pupation, or pupate in wet soil covered by rocks. After mating, female lays eggs onto the aquatic plants’ roots or stems near the water surface.

 

形态特征：雄萤体长6.7-7.5毫米，复眼巨大，鞘翅边缘有黄色边缘；发光器几乎完全占据第六腹板和第七腹板的前半部，鞘翅比黄缘水萤浅色。雌萤外貌类似雄萤，但复眼较小、只有一个发光器，占据第六腹板。幼虫腹节1-8各有一对分叉的鳃，背板黑褐色，不规则地密布黄色小点，背板后缘各有四个大黄点，发光器位于第8腹板两侧，圆点形。

分布地点：广州即将消失的萤火虫公园（穗丰村）、广州从化溪头村，广东茂名信宜，香港大埔滘、凤园、沙螺洞、水盏田、蕉坑、林村谷、黄鱼滩。

成虫活跃月份：4-9月。

其他资料：幼虫水生，在缓流、浅水、软绵基质的水底生活，捕食水生螺；在水边湿泥挖穴化蛹，或钻到石块底下的湿泥化蛹。交配后雌萤在近水面植物的茎或根上产卵。

Larva—