Couplets: 1  2  3  4  5  6  7  8  9  10  11  12  13  14  

Key to Adult Males of Eastern Nearctic Blephariceridae: Couplet 11(9)

Apex of dorsal paramere deeply incised on either side of pronounced medial dorsal carina; apex of ventral parameres complex, with stout, dorsally recurved hook; medium-sized (wing length 5-6mm)...12	Apex of dorsal paramere weakly incised or entire on either side of weak medial dorsal carina; apex of ventral parameres simple; small (wing length 3-4mm)...13