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Species Iridopsis larvaria - Bent-line Gray - Hodges#6588

greenish larva with brown hump - Iridopsis larvaria Amherst larvaria - Iridopsis larvaria Unknown Moth 8 - Iridopsis larvaria - male moth - Iridopsis larvaria possible Cymatophora approximaria - Iridopsis larvaria - female Iridopsis larvaria Bent-line Gray - Hodges#6588 - Iridopsis larvaria - male Iridopsis larvaria
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Ennominae
Tribe Boarmiini
Genus Iridopsis
Species larvaria (Bent-line Gray - Hodges#6588)
Hodges Number
Synonyms and other taxonomic changes
Iridopsis larvaria (Guenée, [1858])
original combination Boarmia larvarai Guenée, [1858]
= Cymatophora larvaria; in Packard (1876) Rep. U.S. Geol. Geog. Surv. Territ. 10: 437
* phylogenetic sequence #194875
wingspan 26-36 mm (1)
Adult: wings pale gray to grayish-white with sharp black lines and brown shading, but less mottled than in Brown-shaded Gray (I. defectaria); PM line on hindwing more sharply angled than in any other species of Iridopsis; discal spots hollow, prominent; melanic specimens evenly dark gray with normal markings
[adapted from description by Charles Covell]

Larva: body green with dorsal brown markings over thoracic and second to fifth and eighth abdominal segments; spiracles small, whitish, rimmed with pale orange; ventral surface of second abdominal segment with brown patch that may join dorsal patch; spiracular area of second segment swollen; thoracic and midabdominal prolegs darkened; dorsum of eighth abdominal segment with low, black warts; head flat-faced, mottled orange brown, lobed above, with broad darkened band that meets over head and may continue onto thorax; this band narrowing to eyes, leaving pale "cheek" patch
[description by David Wagner and Valerie Giles]
Newfoundland to Georgia, west to Texas, north to British Columbia - Map (MPG)
deciduous woods; adults are nocturnal and come to light
adults fly from April to September; February to November in the south
larvae from May to October
larvae feed on alder, birch, black cherry, maple, poplar, senna, willow, and many other plants (2)
Life Cycle
two generations per year
See Also
Brown-shaded Gray (Iridopsis defectaria) wings more mottled, and hindwing AM line less sharply angled
Internet References
live adult image - Larry Line, Maryland
distribution in Canada list of provinces (CBIF)
Works Cited
1.Field Guide to Moths of Eastern North America
Charles V. Covell, Jr. 2005.
2.Caterpillars of Eastern North America
David L. Wagner. 2005. Princeton University Press.