“水虿”是蜻蜓幼虫的通称。碧伟蜓在水虿时期时,生活在水里。虽然有的水虿春天出生,当年就变成了蜻蜓,但多数情况下,水虿都是在夏天、秋天出生,然后越过一个冬天,第二年才变成蜻蜓。从出生到变成成虫这段时间,它们要蜕10次以上的皮。从卵里刚孵化出来的幼虫,身长只有2毫米,但蜕掉最后一层皮后,它们的身体比原来足有20倍以上那么长了。 “Water 虿 ” is the generic term for dragonfly larvae. Bi Wei dragon in Mina period, living in the water. Although some waterbirds are born in spring, they became dragonflies that year, but in most cases, waterbirds are born in the summer and fall, then over a winter, and become dragonflies the following year. From birth to adulthood this time, they want to shed more than 10 times the skin. The newly hatched larvae from the eggs, only 2 millimeters long, but after shedding the last layer of skin, their bodies are more than 20 times longer than the original.