Subfamily Noterinae Thomson 1860:34.
- Genus Notomicrus Sharp 1880-1882:260, 834.
- Genus Suphis Aube, 1836:208.
- syn. Colpius LeConte 1861:40.
- Genus Pronoterus Sharp 1880-1882:263, 835.
- Genus Mesonoterus Sharp 1882:4.
- Genus Hydrocanthus Say 1823:105.
- subgen. s.str.
- subgen. Guignocanthus Young 1985:91.
- Genus Suphisellus Crotch 1873:397
- Suphisellus Zimmermann 1921:187
A portion of this treatment was adapted from a manuscript prepared by R. E. Roughley, University of Manitoba.

Revised 26 January 1996
Warren U. Brigham
brigham@wub.igis.uiuc.edu