Kings Co.: Woodville Mills, 16.IX.2002, C.G. Majka, beaver pond, (3, CGMC). Queens Co.: Hillsboro River, 22.VI.1981, V. Friesen, (7, UPEI).
Dineutus hornii is newly recorded on Prince Edward Island. Species of Dineutus are found on the surface ponds, streams, lakes and rivers where they often form large rafts of individuals ( Roughley 2000a).
Roberts (1895, pp 284) described this species as Dineutus hornii, the specific epithet spelled with two “i’s”. Subsequently some authors (i.e. Leng 1920; Roughley 1991b; Laplante et al. 1991; Dearborn and Donahue 1993; Downie and Arnett 1996; Chandler 2001) dropped the second “i”, incorrectly spelling the name “ Dineutus horni ”. Accordingly the name Dineutus horni is designated as an incorrect subsequent spelling of Dineutus hornii Roberts, 1895 (Article 33.3, ICZN 1999).