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

Key to Pupae of Eastern Nearctic Blephariceridae: Couplet 8(7)

Abdominal papillae large (>10µm), adjacent papillae separated by distance that approximates papilla width; anterior lamella of respiratory organs broadly rounded apically; large (> 6mm)...Bl. gelida Courtney	Abdominal papillae small (<10µm), adjacent papillae separated by distance that typically exceeds papilla width; anterior lamella of respiratory organs broadly pointed apically; relatively small (< 6mm)...Bl. capitata Loew and Bl. separata Alexander