My sister found this beneath a log. Both the CNC Checklist (PDF file)
reports four Notiophilus
species for Ontario.
This individual is definitely N. semistriatus
, based on color and the frequency and arrangement of puncturation on the pronotum and elytra. The rows of puncturation in the elytra of both aeneus
are sparser and less parallel, while in the much darker aquaticus
, the rows become less defined as they reach the elytral apex.