Does the top of the thorax have two yellow-green stripes behind head and does the abdomen have alternating large blue spots and small green spots?	Does the top of the thorax have two thick, green, crescent-shaped spots just behind head and the abdomen has pairs of blue-green spots?
Paddle-tailed Darner Aeshna palmata	Shadow Darner Aeshna umbrosa

Written by Mark Lung and Stefan Sommer, 2000
Photos by Dennis Paulson, 2001.