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

Key to Adult Males of Eastern Nearctic Blephariceridae: Couplet 5(2)

Cercus with sparse setae, posterior margin relatively straight; dorsal paramere opaque...Bl. corniculata Courtney	Cercus densely set with long setae, posterior margin with pronounced lobe near inner edge; dorsal paramere with pigmented outer margins...6