water scorpion
noun
1- a mainly tropical predatory water bug with grasping forelegs, breathing from the surface via a bristle-like 'tail'水蝎, 蝎蝽, 红娘华。
1.1
- Family Nepidae, suborder Heteroptera: several genera and species, including the European Nepa cinerea.蝎蝽科, 异翅亚目：数属, 数种, 包括欧洲灰蝎蝽。