Pyrocoelia analis

宽缘窗螢  Rimmed Window Firefly

 

 

Morphological features：

Male body length 12-18 mm, windows at the posterior part of the pronotum small; elytra with orange rim, outer margin broader; light organs transverse, located at 6th and 7th ventrite. Female body length 28 mm, orange in colour, bearing a pair of short and small elytra, light organs rounded, one pair at 6th abdominal ventrite, another pair at 7th. Larva black, irregularly scattered with small light brown spots, a pair of light organs located at 8th abdominal segment. Lateral sides of the last 2 tergites rounded, different from the more straight lateral sides of the last 2 tergites in Pyrocoelia lunata.

 

Distribution：

Commonly seen in countryside, farmlands, abandoned farmlands, fish ponds, wetlands, occasionally even in the city, but less commonly seen in woodland areas.

 

Adult flight period：

March to December

 

Other information：

Male is commonly seen, but not in large number, usually in one to a few individuals, flying slowly, showing continuous glow, activity duration long, could be seen till midnight. Female is very rarely recorded. Larva feeds on snails.

 

形态特征：

雄萤：体长12-18毫米，背板前方窗口细小，鞘翅边缘橙色，外缘色斑较宽，发光器横形，位于第六、七腹板。

雌萤：体长28毫米，橙色，有一对短小鞘翅，第六、七腹板各有一对点状发光器。

幼虫：黑色，散布不规则浅褐色小点，一对发光器位于第八腹节两侧，最后两节背板两侧皆弧圆，有别于弦月窗萤幼虫最后两节背板两侧近平直。

 

分布地点：

常见于广东、广西的乡村、农田、废弃农田、鱼塘湿地，或在市区公园亦有记录（例如深圳莲花山公园），但较少在林区出现。

 

成虫活跃月份：3月至12月。

 

其他资料：

（1）雄萤虽然常见，但数量不多，通常只见一到几只，在空中慢飞并持续发光；（2）晚间活动时间较长，至午夜仍可见，雌萤极为罕见。（3）幼虫以蜗牛为食。