Pyrocoelia lunata

弦月窗螢 Lunate Window Firefly

Morphological features： Male body length 17-22 mm, the largest firefly in Guangzhou; windows at the posterior part of the pronotum distinct, lunate; light organs transverse, located at 6th and 7th ventrite. Female body length 32-47 mm, bearing a pair of short and small elytra, shape varies, light organs rounded, one pair at 6th abdominal ventrite, another pair at 7th. Larva black, body length of the largest record 65mm; irregularly scattered with small light brown spots, a pair of light organs located at 8th abdominal segment. Lateral sides of the last 2 tergites almost straight, different from the rounded lateral sides of the last 2 tergites in Pyrocoelia analis.

Distribution：Widely distributed in the mountain forests and grasslands of the Pearl River Delta region in Guangdong.

Adult flight period：Late October to early December

Other information：Male flies slowly, showing continuous glow, appears late, about 1 hour after sunset, keeps active for about 3 more hours. Female is very rarely recorded. Larva feeds on snails.

 

形态特征：雄萤体长17-22毫米，是目前广州地区体型最大的萤火虫，背板前方窗口清晰、弦月形，发光器横型，位于第六、七腹板。雌萤体长32-47毫米，黄褐色，有一对短小鞘翅，形状不稳定，第六、七腹板各有一对点状发光器。幼虫黑色，最大记录体长65毫米，散布不规则浅褐色小点，一对发光器位于第八腹节两侧，最后两节背两侧接近平直，有别于宽缘窗萤幼虫最后两节背板两侧弧圆。

分布地点：广布于广东珠三角地区的山林、草地等。

成虫活跃月份：10月下旬至12月上旬

其他资料：雄萤在空中慢飞、发持续的光；晚间活动时间较迟开始，日落后一小时才陆续现身，至日落后四小时左右。幼虫取食蜗牛。

 

The larva is feeding on a snail–