I cannot find a species name so if anyone can help with it, I would be grateful. Found it at Berg en Dal Camp.
Weird insect with 2 tails.
Mayfly spinner. Probably a male. Species uknown.
Small Minnow Mayfly (Baetidae), Bowers Park, Santa Clara, Santa Clara County, California - June 2010. Thanks to v belov and Bug Guide for family level identification. The huge eyes on this one are really cool.