Isoperla marmorata - voucher specimen, in alcohol - Isoperla marmorata Healdsburg, Russian River, Sonoma County, California, USA January 29, 2013 Size: 14 mm
Identified using John B. Sandberg's article in Illiesia: "The Isoperla of California (Plecoptera: Perlodidae); larval descriptions and a key to 17 western Nearctic species" 2011. The size noted above refers to body length and excludes the cerci which add another 7 mm to the length.
Images of this individual: tag all Contributed by Mark Melton on 16 December, 2013 - 3:27pm |