title: Heringia calcarata
text: # Heringia calcarata
  
  Heringia calcarata, the opaque spikeleg, is an uncommon species of syrphid fly observed in North America Hoverflies can remain nearly motionless in flight. The adults are also known as flower flies for they are commonly found on flowers from which they get both energy-giving nectar and protein rich pollen. Larvae are aphid predators.
  
  