Sphyracephala
Sphyracephala is a genus of stalk-eyed flies in the family Diopsidae, with records from Africa, Europe, Asia and N. America.

Flies are commonly found on leaves and stem of trees and plants along streams and rivers. Very large clusters of Sphyracephala are known with clusters numbering over 100,000 individual flies, with roughly half being males.

This genus resembles the presumed extinct genus Prosphyracephala, known from Baltic amber.

Species
BioLib and the Global Biodiversity Information Facility lists:
 Sphyracephala beccarii 
 Sphyracephala bipunctipennis 
 Sphyracephala brevicornis 
 Sphyracephala europaea 
 Sphyracephala hearseiana 
 Sphyracephala nigrimana 
 Sphyracephala subbifasciata

References

Diopsidae
Diopsoidea genera