Water Bugs

These are all known as "true bugs", as opposed to beetles, flies, ants, etc. Both the larval and adult stages are aquatic, although only the adult stages are shown here. All may be found swimming or clinging to underwater plants and must surface to breathe. All are also strong fliers that are attracted to lights at night and have a painful and poisonous bite. Giant Water Bugs are known to feed on small fishes.

Water Boatman

Water Boatman
Arctocorixia interrupta
to 1"

extremely common


Water Strider

Water Strider
Gerris marginatus
to 1"

Skims along on surface of water. Flies well, but does not dive.



Water Scorpion

Water Scorpion
Ranatra fusca
to 2.5"

Not a true scorpion, but has a very painful bite.




Giant Water Bug

Giant Water Bug
Lethocerus americanus
to 3"




Backswimmer

Backswimmer
Lethocerus americanus
to 1/2"


Naked Sea Butterfly

Naked Sea Butterflies Clione limacina resemble angels. They have a spindle-shaped body up to 1 inch long that is bluish and transparent, with pink to red-yellow areas. The shell is absent. The head is well developed and clearly evident because of an indentation on the upper part of the body. The body has robust flaps ( mantle lobes ) that are used for propulsion. Although it looks like a jellyfish, the Naked Sea Butterfly is a gastropod mollusk, related to snails and sea slugs, and does not sting.