Lafontaine & Schmidt (2010, p. 129) elevated
minus to full species status stating, "DNA barcode data supports the recognition of the phenotypically distinct taxon
Marathyssa minus as a species separate from
M. inficita of which
minus was previously treated as a subspecies." That said, Dyar's
original 1921 description provides little in the way of help to separate the two species and
images on the BOLD website are primarily of very worn specimens or show underwings only.