Venation:
- both cells divided
- FW quadrifid
- three anal veins on HW
- FW (((R5, R4) R3)R2) on a single stalk from corner of cell

Palpi very small, reduced or absent

Proboscis rudimentary or absent

No tympanum

Chaetosema between eyes and antennae present

Ocelli absent

Neotropics only