genus

Polyarthra

Field notes

Polyarthra is a genus of rotifers belonging to the family Synchaetidae.

The genus has almost cosmopolitan distribution.

Species:

Polyarthra bicerca Wulfert, 1956

Polyarthra dissimulans Nipkow, 1952

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided