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

Bent-Line Gray Moth - Iridopsis larvaria small brown moth - Iridopsis larvaria small brown butterfly - Iridopsis larvaria Which Geometroidae? - Iridopsis larvaria Bent-line Gray - Hodges#6588 - Iridopsis larvaria 6588 Bent-line Gray - Iridopsis larvaria  Iridopsis larvaria  - Iridopsis larvaria 6588 – Iridopsis larvaria – Bent-line Gray - Iridopsis larvaria
Show images of: caterpillars · adults · both
Classification
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
6588
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
Size
wingspan 26-36 mm (1)
Identification
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]
Range
Newfoundland to Georgia, west to Texas, north to British Columbia
Habitat
deciduous woods; adults are nocturnal and come to light
Season
adults fly from April to September; February to November in the south
larvae from May to October
Food
larvae feed on alder, birch, black cherry, maple, poplar
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)
live larva image plus description, seasonality, life cycles (David Wagner and Valerie Giles, Caterpillars of Eastern Forests, USGS)
distribution in Canada list of provinces (CBIF)
Works Cited
1.Field Guide to Moths of Eastern North America
Charles V. Covell, Jr. 2005.