Gerris sp.
Water striders are in the family Gerridae. Both the nymph and adult are predators of insects that fall or settle on the water surface. They can be found worldwide on the surfaces of ponds and slow moving waterways during any time of year when the water is not frozen.
Order: Hemiptera
Family: Gerridae
Species: probably Gerris sp.
Photograph: © 2016 RKD Peterson
Date of Photograph: 18 August 2016
Location: Montana, Gallatin Co.