Notonectidae
plural noun
No·to·nec·ti·dae
-təˌdē
: a family of aquatic carnivorous insects (order Hemiptera) having the back strongly convex and the hind legs long and resembling oars and habitually swimming back downward
Word History
Etymology
New Latin, from Notonecta, type genus (from not- + -necta swimmer, from Greek nēktēs, from nēchein to swim) + -idae