Opisthius richardsoni mating pair - Opisthius richardsoni
Olympic National Park, Clallam County, Washington, USA
May 18, 2008
Size: 1.0 cm
Like the other two images I submitted from last year, I photographed these at upper end of Lake Mills on a sand back at a sort of delta formed as the Elwah river flows into Lake Mills.
The aedeagus, the sperm-transfer tube, is barely visible.