Synonyms and other taxonomic changes
Semiothisa multilineata
described in 1873 by Packard, who originally placed it in genus Macaria
Size
wingspan 26-28 mm, based on several Internet photos
larva length to 25 mm
Identification
Adult: forewing light gray with brownish tint beyond PM line; AM, median, and PM lines straight, dark, usually conspicuous and with sharp bend near costa; subterminal line a shallow whitish arc extending from apex to anal angle; terminal line thin, dark; outer margin falcate near apex; hindwing similarly colored but with dark discal spot between median and PM lines; prominent point about half-way along outer margin
Larva: body greenish with dark and pale stripes interrupted by spots; middorsal stripe dark green with irregular white spots in breaks; subdorsal stripe white interrupted by dark olive-green spots; spiracular stripe white, fragmented with dark olive-green spots in gaps; hind margin of each segment has yellowish band; head dark grayish-green; prothoracic shield greenish with large dark green spot laterally; thoracic legs dark green, becoming increasingly yellow toward tip
[adapted from description at
USDA Forest Service]
Range
New England, New York, and Ontario to Florida, west to Oklahoma and Iowa
Season
adults fly from April to September
larvae present from June to November
Life Cycle
one or two generations per year; overwinters as a pupa in soil or debris
See Also
forewing of other
Macaria species have wavy (or wavier) AM and PM lines (
compare images of numerous species by Jim Vargo at MPG)
larvae of
Curve-lined Angle (
Digrammia continuata) have reddish markings near the spiracles
Internet References
3 live adult images plus dates and common name reference (Bob Patterson, Maryland)
3 live adult images and dates (Larry Line, Maryland)
pinned adult image and photos of related species by Jim Vargo (Moth Photographers Group)
3 pinned adult images (James Durbin, Iowa)
2 pinned adult images and collection site map showing presence in North Carolina (All-Leps)
live larva image plus description, seasonality, foodplants, life cycle, similar species, synonym (C.T. Maier
et al, USDA Forest Service, forestpests.org)
presence in Florida; list (John Heppner, Florida State Collection of Arthropods)
presence in New York; list (Timothy McCabe, Olive Natural Heritage Society, New York)
