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Species Orthosia rubescens - Ruby Quaker - Hodges#10487

Ruby Quaker? - Orthosia rubescens Ruby Quaker - Orthosia rubescens Gray and Black Caterpillar - Orthosia rubescens Ruby Quaker - Orthosia rubescens April noctuid #2 - Orthosia rubescens Pennsylvania Moth - Orthosia rubescens Orthosia rubescens Orthosia rubescens
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Noctuoidea (Owlet Moths and kin)
Family Noctuidae (Owlet Moths)
Subfamily Noctuinae (Cutworm or Dart Moths)
Tribe Orthosiini
Genus Orthosia
Species rubescens (Ruby Quaker - Hodges#10487)
Hodges Number
Synonyms and other taxonomic changes
Orthosia rubescens (Walker, 1865)
common to abundant
wingspan 30-40 mm
Adult: antennae of male bipectinate; forewing yellowish with heavy reddish to reddish-brown shading; reniform spot with black filling at lower end; otherwise, pattern too variable and insdistinct to be useful
hindwing pale grayish-brown, darker toward outer margin; fringe pale

Larva: dark brown to violet gray above and pale green-white below, with broad white stripe running through spiracles; head brown with snowflake-like lighter areas and dark stripes to either side of midline; dorsal and subdorsal stripes broken into white spots; dorsum often with single white spot to either side of midline; lateral stripe interrupted by dark patches about spiracles
[description from Caterpillars of Eastern Forests]
Nova Scotia to Virginia, west to Arkansas, north to Ontario
deciduous and mixed woods, wood edges; adults are nocturnal and attracted to light and sugar bait
adults fly during warm periods in winter but are mostly seen in March and April, with scattered records to July
larvae in May and June
larvae feed on leaves of alder, beech, cherry, hemlock, maple, oak, plum, poplar, and cattail (Typha spp.)
Life Cycle
one generation per year
See Also
compare to three other species of tribe Hadenini with reddish-brown forewings
Print References
Covell, p. 106, plate 22(10) (1)
Wagner, Caterpillars of Eastern North America, p. 419 (2)
Wagner, Owlet Caterpillars, p. 480 (3)
Internet References live adult image (Al Sinclair, Ontario)
pinned adult image (James Adams, Dalton State College, Georgia)
live larva image plus description, food plants, seasonality, life cycle (David Wagner and Valerie Giles, Caterpillars of Eastern Forests; USGS)
food plants; PDF doc plus flight season, life cycle (Macrolepidoptera of Mont Saint-Hilaire Region, McGill U., Quebec)
common name reference plus food plants and flight season (Ohio State U.)
Works Cited
1.Peterson Field Guides: Eastern Moths
Charles V. Covell. 1984. Houghton Mifflin Company.
2.Caterpillars of Eastern North America
David L. Wagner. 2005. Princeton University Press.
3.Owlet Caterpillars of Eastern North America
David L. Wagner. 2011. Princeton University Press.