Mayfly






CLASS

Insecta

ORDER

Ephemeroptera

FAMILY

Heptageniidae

GENUS

Ecdyonurus

SPECIES

subalpinus



Keys used for
this identification

only gills laminae 1-6 with one tuft of filamentous gills each

gill 1 shorter, little more than twice as long as wide

Pronotum asymmetrically pointed

tarsi distally dark


THE FAUERBACH BENTHOS REPORT

Species
Ecdyonurus subalpinus

Keys used for this identification: pronotum asymmetrically pointed, first gill short, abdominal segments broad at their base.