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Genus Notonecta

Backswimmer - Notonecta kirbyi Notonecta irrorata Redbacked backswimmer - Notonecta lobata  Notonecta undulata? - Notonecta unifasciata Backswimmer - Notonecta uhleri Backswimmer - Notonecta undulata Boatman - Notonecta undulata
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Heteroptera (True Bugs)
Infraorder Nepomorpha (Aquatic Bugs)
Superfamily Notonectoidea
Family Notonectidae (Backswimmers)
Genus Notonecta
Explanation of Names
Notonecta Linnaeus 1758
from Greek noto 'the back' + necta 'swimmer'
17 spp. in 4 subgenera in NA(1)
(6 in NH(2), 5 in MI(3), 6 in NC(4), 4 in FL(5), 9 in TX(6))
8-16 mm
rather large, common backswimmers; eyes widely separated; middle femur with a pointed spine before distal end(7)
Keys to spp. provided in(7)(5)(3)