WA species: Hydropsyche amblis Hydropsyche californica Hydropsyche centra Hydropsyche cockerelli Hydropsyche confusa Hydropsyche morosa Hydropsyche occidentalis Hydropsyche oslari (8) WA species | Two (fairly) large rectangular plates on the underside of the first thoracic segment; foretrochanter is forked into two points; no clusters of numerous dark hairs on the sides of the abdomen; some species with color patterns on their heads. | Body length: 14 mm. Body: brownish yellow. Wings: brown with mottled light/dark pattern. |