Gerris dissortis Drake & Harris, 1930: 145−146 (original description).
One paratype is deposited in NMPC:
PARATYPE (J macr.): ‘Jack River [hw] Ont. [p] / 21. v. [hw] 1927 / G. S. Walley [p] // PARATYPE [p] / Gerris / dissortis / D. & H. [hw, red label] // J [p]’.
Current status. Valid species: Limnoporus dissortis (Drake & Harris, 1930) (see SMITH 1988b, ANDERSEN & SPENCE 1992, ANDERSEN 1995b, DAMGAARD et al. in press).