water boatman
noun
(亦作lesser water boatman)
1
- an aquatic bug which spends much of its time on the bottom, using its front legs to sieve food from the water and its hair-fringed rear legs for swimming划蝽。
1.1
- Family Corixidae, suborder Heteroptera: Corixa, Sigara, and other genera.划蝽科, 异翅亚目：划蝽属, 小水虫属及其他属。
2
- another term for BACKSWIMMER.