Synonyms and other taxonomic changes
Heterophleps triguttaria Herrich-Schäffer, 
The wingspan averages 18-24 mm. (1)
Forewing whitish to pale yellowish-brown with three dark brown triangular spots evenly spaced along the costa.
North Carolina to Colorado, north to Ontario and Quebec.
Heterophleps triguttaria is found in or near deciduous woods containing maples.
The main flight period is April to September.
The larvae feed on maples.
Heterophleps refusaria (Three-patched Bigwing) is larger and has faint "connect-the-dots" antemedian (AM) and postmedian (PM) lines crossing the wing. See comparison images
of both species.
Herrich-Schäffer, . Samml. Aussereurop. Schmett. (I)1: pl. 41
, fig. 202.