50个物种有在中国大陆分佈。这50个物种当中的15个物种有在河北省分佈、三个物种有在四川省分佈，另外有五个物种在台湾分佈。下列部分物种：
Description.幼体e of this genus are often多态性 (生物学)obligate 肉食动物s. The second and third s are predators, and the first is also carnivorous in some species. Some species have