
Appearance
Forewing dark gray faintly tinted with reddish violet and with white dusting on basal area and forming atriangulate patch from costa before subterminal line, the white dusting faint (less contrasted than on caryivorella); scale ridge black, without any red bordering patch or bar; discal dots at end of cell distinct, separate; antemedial line obscure, almost obsolete; subterminal line faint. Hind wing smoky fuscous. Alar expanse, 20-24 mm. Male genitalia figured from specimen from the original Hulst series in the National Collection (bearing a Hulst "type" label and presumably a paratype).
Distribution
USA: Maine, Maryland, Minnesota, Massachusetts, Pennsylvania, WisconsinCanada: Ontario
References:
Some text fragments are auto parsed from Wikipedia.
https://bugguide.net/node/view/854215https://en.wikipedia.org/wiki/Acrobasis_betulella
http://mothphotographersgroup.msstate.edu/large_map.php?hodges=5688
https://www.butterfliesandmoths.org/species/Acrobasis-betulella
Print references:
Carl Heinrich (1956). American Moths of the Subfamily Phyctinae. United States National Museum Bulletin 207.