Giant Water Bug (John Obermeyer, Purdue University)
Common Name: Giant Water Bug
Order: Hemiptera
Family: Belostomatidae
Pest Status: Water bugs are not pests but may deliver a painful bite if mishandled.
Appearance: Giant water bugs are 2 1/2-inches long and brown in color. Their bodies are flat, elongated ovals in shape, but pointed at both ends. The front legs are enlarged and pincer-like. A short beak is visible on the front of the underside of the head.
Life Cycle: During warm months, females attach eggs to underwater vegetation. After hatching, the wingless nymphs resemble small adults. They molt several times before becoming full-sized, winged adults. Adults usually overwinter.
Where to Collect: Water bugs prefer clear, freshwater streams and ponds, especially those with aquatic vegetation. When they complete their development, the adult forms leave the water for a short time to mate. In so doing they are highly attracted to lights to find mates and may be collected under street and porch lights during late summer.
Purdue Extension Entomology, 901 West State Street, West Lafayette, IN 47907 USA, (765) 494-4554