| DESCRIPTION |
 |
Similar taxa: Backswimmers are similar to the
Corixidae
in overall form. They my be distinguished by their strongly convex dorsal
surface which lacks the thin transverse dark stripes and by the form of the
foretarsi which are not scoop-like. Body size: 5-16 mm. Legs:
Front and middle legs are short and possess claws. Hind legs are oar-like,
much longer, lack claws. Eyes: Eyes comprise most of the head; ocelli
are absent. Antennae: Present but inconspicuous. Mouthparts:
piercing/sucking.