Subject: aquatic insect
Location: No. Yuba River, Sierra County, California
July 21, 2017 10:27 pm
I saw these bugs on top of the river water in a slow side pool. They were skating around like crazy! Looked like there were 100’s of them. I photographed them yesterday on the North Yuba River, in Sierra County , Ca , near the town of Goodyear’s Bar. They are about the size of a small freckle! What the heck are they? Any info would be a great help! Thanks
Signature: Katie O’
Dear Katie O’,
These are Water Striders in the family Gerridae, and according to BugGuide, they are found on the: “surface of ponds and slow-moving streams/rivers.” Your individuals appear to be immature nymphs. Water Striders feed on small insects that fall onto the surface of the water.
Thank you so much for ID-ing those crazy bugs! The mystery is solved! Water Strider nymphs! I never would have figured that out on my own! Thank you so much for your help!