异翅目(Heteroptera)水蝽科(Mesoveliidae)约30种昆虫的统称。小型，长约5公釐(0.2吋)，体细长。捕食性，生活在浮生植物上或水面。新几内亚的Phrynovelia papua生活于森林地被物的叶上。
大庭博士过去还拍到了过巨型水蝽进食蛇类的照片。
Dr Ohba has also photographed giant water bugs eating snakes in the past.
我们知道巨型水蝽只攻击移动的猎物，所以这只58毫米长的昆虫可能是先抓住并杀死这只幼小的金线龟后才开始食用它。
The giant water bugs are known to only attack moving prey so it is likely that the 58mm insect captured and killed the young turtle before feeding on it.
我相信在我得到这本书之前，某种有害的水蝽早就占领了它，而当我翻到书本第一页时，很难区分谁对此书的拥有权更多。
Some kind of pestilence – water bugs, I believe – had gotten to it before I did, and it was hard to tell, as I turned to that first page, which of us would get more from it.
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