Stonefly






CLASS

Insecta

ORDER

Plecoptera

FAMILY

Perlodidae

GENUS

Isoperla

SPECIES

grammatica



Keys used for
this identification

1- Lighter patches around the eyes. 2- sub circular light patch in the middle of the head. 3 - Dark markings do not extend to anterior margin of the head.

Ceracal segment 7 to 10 with short bristles only. Cercal segment 17 to 19 with marginal long bristles.


THE UDENTALRBACH BENTHOS REPORT

Species
Isoperla grammatica