any of the aquatic predatory beetles of the widely distributed family Dytiscidae, characterized by flattened hindlegs adapted for swimming and diving
diving beetle in American English
noun
any of numerous predaceous water beetles of the family Dytiscidae, having the body adapted for swimming
Examples of 'diving beetle' in a sentence
diving beetle
Diving beetles are predatory insects found across the northern hemisphere.
Times, Sunday Times (2007)
Of the threatened species of invertebrates, the great silver diving beetle and marsh fritillary butterfly are likely to enjoy an important boost to their numbers.
Times, Sunday Times (2008)
It was a diving beetle, with that amiably rotund shape that prejudices us in favour of most beetles, because they look so earnest and preoccupied.
Times, Sunday Times (2013)
The rigid hairs on the belly of a diving beetle, for instance, create a silvery film of air that does not collapse.