Key to Instar IV Larvae of Eastern Nearctic Blepharicera (Bl. tenuipes species-group)

Couplets: 1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  

Couplet 9(7)

Dorsal secondary sensillae mostly globose...Bl. similans Johannsen	Dorsal secondary sensillae mostly clavate or digitiform...10