Key: Step 531. Diamesinae 7

531a. Anal lobes small, shorter than segment VIII, with 3 strong, hooked, macrosetae (027c.jpg, 027d.jpg). Thoracic horn small, brown, triangular (027b.jpg). Frontal setae and hook row II absent.

Step 532. Diamesinae 8 Boreoheptagyia

531b. Without this combination of characters.

Step 536. Diamesinae 12
Decision path