Are the anal appendages “S” shaped with the tips pointing out when viewed from above?	Are “S” shaped anal appendages absent?
Lyre-tipped Spreadwing Lestes unguiculatus	Emerald Spreadwing Lestes dryas

Written by Mark Lung and Stefan Sommer, 2000
Photos by Dennis Paulson, 2001
Illustrations courtesy of Robert Cannings, 2001.