Mayfly - Callibaetis - Burlington, Middlesex County, Massachusetts, USA September 4, 2008 Size: 8 mm (approx)
On a glass door at 5:00 AM, an hour before sunrise.
The two tails are not much longer than the body.
Contributed by John F. Carr on 4 September, 2008 - 4:20am Last updated 4 September, 2008 - 9:06am |