backswimmer

English Thesaurus

1. predaceous aquatic insect that swims on its back and may inflict painful bites (noun.animal)

hypernym	:	bug, hemipteran, hemipteron, hemipterous insect,
definition	:	insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis (noun.animal)

member meronym	:	genus notonecta, notonecta,
definition	:	type genus of the Notonectidae: backswimmers (noun.animal)