Genus SCHIZOPUS LeConte 1858
Schizopus LeConte 1858b:70.
    Type species: Schizopus laetus LeConte 1858
Yermoella Obenberger 1939n:263.
    Type species: Yermoella helferi Obenberger 1939

laetus LeConte 1858b:71.
        syn. helferi (Obenberger) 1939n:264 (Yermoella).
sallei Horn 1885:145.
    ssp. nigricans Nelson in Nelson & Bellamy 1991:996.