These tiny psyllid bugs appeared on some willow buds in early March 2009 at the mouth of the Elwha River, in Washington State. Compare the shape of these true bugs, (Order Hemiptera) with the largest true bugs, cicadas.
The plant host appears to be Hooker Willow, Salix hookeriana, based on Pojar and Mackinon’s Plants of the Pacific Northwest Coast.
Pairs appeared to be mating, and I captured video of mating behaivor. The male, on the right at the begining of the video, elevates his wings as he sidles up to the female.