Allochronic
Guides
Rhaphiomidas
flower-loving flies
Rhaphiomidas is a genus of mydid flies comprising fewer than 30 species and subspecies restricted to desert regions of the southwestern United States and northwestern Mexico. Adults are active for brief periods in spring or fall, with multiple species in the same dune system often separated by seasonal timing. Several taxa are critically endangered due to habitat loss from development and recreational disturbance.