Epeorus alpicola

Subimago  Male

  -    . . .

  - Order Ephemeroptera
  - Family Heptageniidae
  - Genus Epeorus
  - Species alpicola  

I collected this specimen from a cold and clear mountain stream at about 1100 m. above see level.




That day there was a moderate hatch of E.alpicola during the warm afternoon. I could observe several subimagos swiftly flying away from the whirling surface as they emerged.




The E.alpicola is a typical summer mayfly and hatches from May till end of August