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 12(11)

Dorsal sensillae arranged in transverse anterior and posterior clusters...Bl. tenuipes (Walker)	Dorsal sensillae densely distributed over segments, not arranged in distinct transverse clusters...Bl. hispida Courtney