Hydroporus nigellus Mannerheim

Notes.

This species is reported from only two specimens collected in Cape Breton County and Victoria County (samples C21, V28).

Habitat.

These beetles are common in small pools with dense emergent vegetation. The two specimens collected in Cape Breton Island were from a sphagnum bog and a eutrophic pool besides a river.

Distribution in the Maritime Ecozone.

Prior to this study, this species had only been reported from the neighboring province New Brunswick (Larson et al. 2000; Bousquet et al. 2013). The North American range of this Holarctic species includes most of the boreal zone and extends north to the southern arctic (Larson et al. 2000).