Five in LepiLED trap in mature jack pine (Pinus banksiana) stand.
Per Miller (1985):
[from busckana] antennal pecten length at least two-fold antennal segment length (see third image.)
https://scholar.valpo.edu/cgi/viewcontent.cgi?article=1537&context=tgle
A second voucher here:
Hindwing has No dark brown bar between two wavy brown lines.
Forewing;s post-medial line lacks curve (that is present on Intricate Satyr).
This individual's eyes lack gray/blue stripes/markings found on Intricate Satyr.
Chutes PP, near Espanola, ON
Tentatively identified as Agonopterix nigrinotella
Here are 2 examples. They are both a bit worn, however I think that the black collar that extends almost around the whitish thorax is distinctive...
Addendum... Possibly 420159 – Nites betulella – Black-dotted Birch Leaftier
http://mothphotographersgroup.msstate.edu/species.php?hodges=944
Some Unidentified Nites species here...
http://mothphotographersgroup.msstate.edu/species.php?hodges=946.97
Tentative. Wondering if this could be O. N-so.nr-auticapitana, given the relatively sparse yellow markings and dark head. Trap was set up directly under a yellow birch. https://bugguide.net/node/view/868945
One at UV light. Perhaps leucostigma?
One at UV light. at UV light. Could this be quercicella? @hughmcguinness?
One at UV light. @jasondombroskie?
One at LepiLED light trap beside calcareous fen.
Per Bugguide: forewing outer margin falcate near apex, resulting in sharply-pointed tip.
https://bugguide.net/node/view/67048
New to me but there is another nearby record:
https://www.gbif.org/occurrence/1842158835
Attracted to UV light.
@a_anctil
Acleris simpliciana. Photographed at MapleCross property, Prince Edward County, Ontario on 27 June 2021.
Acleris semiannula. Photographed at Portage Lake, Parry Sound District, Ontario on 14 October 2021. Tentative identification...
Tentative. Seems like a good match based on appearance. There are a few other late season observations in Ontario, too.
LepiLED light trap. Tentative ID but seems like a good match for this one (and none of the other Agonopteryx known from Canada):
http://mothphotographersgroup.msstate.edu/species.php?hodges=856
Kyle Johnson collected a specimen from Mackinac Co (MI) in a similar habitat on Sept. 18, 2018.
"sand dune ridges/wetland swales with scattered Larix-Pinus-Thuja-Picea-Betula woodland groves."
https://www.gbif.org/occurrence/2275095059
[Sept 9, 2021 edit: Kyle Johnson commented:
'sure looks like it to me. Agonopterix lythrella is similar size and pattern (and flies around the same time), but with a distinct dark reddish cast.
Wow, surprising that is new to Canada, given collection efforts on Manitoulin Island and other places. Shows how much we don't know! I've taken it in a few other northern Michigan locations as well, in addition to Mackinac. Co. Should be sought elsewhere in Ontario, esp. near the border with Michigan.
Kyle]
Tentative, black collar extending almost around white thorax is similar to this record: https://www.inaturalist.org/observations/9497721