Visually I would call it H. nana, moths are on the move northward, so I don't see why it can't be found in NB. I can't find genitalia images for it though, but found this in the latest checklist of Noctuoidea - 930730 Hyperstrotia villificans – This species was synonymized with H. nana (Hübner, 1818) by Lafontaine and Schmidt (2015). New barcode data has shown there are two similar species going under the name H. nana. Specimens of the more southern of the two species, with a range extending from Pennsylvania and Illinois southward to Florida, closely match the holotype of H. villificans. We therefore re-instate the name Hyperstrotia villificans, stat. rev. for this taxon. The type specimen for H. nana, like those of most names published by Hübner, is lost or destroyed, but the rather schematic painting in Hübner (1818: 14, figs 53, 54) more closely resembles the more widespread species that occurs from southern Canada to Florida, so we apply the name H. nana to this species. A neotype should be selected for H. nana when the genus Hyperstrotia Hampson is revised.

Thanks for commenting.
According to the recent CheckList by Pohl et al. 3 spp. occur in Canada but only pervertens in NB.
Recently Hunt showed very wide polymorphism in a moth, perhaps a precedent for pervertens!

genitalia similar to secta on Tom Murray's PBase page.
Only H. pervertens known from NB, so moved there