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

Key to Adult Males of Eastern Nearctic Blephariceridae: Couplet 13(11)

Posterior margin of cercus without conspicuous lobes or processes...Bl. diminutiva Hogue	Posterior margin of cercus with conspicuous, triangular lobe...14