Moths of North Carolina
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View PDFGeometridae Members:
Iridopsis Members:
93 NC Records

Iridopsis humaria (Guenée, [1858]) - Small Purplish Gray Moth

Superfamily: Geometroidea Family: GeometridaeSubfamily: EnnominaeTribe: BoarmiiniP3 Number: 911002.00 MONA Number: 6584.00
Comments: One of 20 species in this genus that occur in North America north of Mexico, seven of which have been recorded in North Carolina. In Rindge's 1966 revision of this group, 18 were placed in Anacamptodes, which he recognized as possibly representing the same genus as Iridopsis, and two in Iridopsis itself.
Field Guide Descriptions: Covell (1984; as Anacamptodes humaria); Beadle and Leckie (2012)Online Photographs: MPG, BugGuide, iNaturalist, Google, BAMONA, GBIF, BOLD                                                                                 
Adult Markings: A small gray and one of only two members of this genus with a bluish or purplish ground color. Distinguished from vellivolata by its smaller size and the black ring followed by a white band on the basal segment of the abdomen (Forbes, 1948). As in most other members of this genus, the postmedian has a definite bulge at C2 with a concavity above and below it, distinguishing this species from Anavitrinella pampinaria which also has a basal white band on the first segment of the abdomen (Forbes, 1948).
Wingspan: 28 mm (Forbes, 1948)
Forewing Length: 11-17, males; 13-17 mm, females (Rindge, 1966)
Adult ID Requirements: Identifiable from photos showing hindwings, abdomen, or other specialized views [e.g., frons, palps, antennae, undersides].
Distribution in North Carolina
County Map: Clicking on a county returns the records for the species in that county.
Flight Dates:
 High Mountains (HM) ≥ 4,000 ft.
 Low Mountains (LM) < 4,000 ft.
 Piedmont (Pd)
 Coastal Plain (CP)

Click on graph to enlarge
Habitats and Life History
Larval Host Plants: Larvae are highly polyphagous, feeding on a wide variety of both woody and herbaceous species (Wagner, 2005)
See also Habitat Account for General Forests and Fields
Status in North Carolina
Natural Heritage Program Status:
Natural Heritage Program Ranks: G4 S3S4
State Protection: Has no legal protection, although permits are required to collect it on state parks and other public lands.

 Photo Gallery for Iridopsis humaria - Small Purplish Gray Moth

Photos: 6

Recorded by: Dean Furbish and Joy Wiggins on 2022-04-27
Wake Co.
Recorded by: Steve Hall and Bo Sullivan on 2021-04-07
Moore Co.
Recorded by: Stephen Hall on 2020-07-23
Orange Co.
Comment: Wingspan = 33 mm
Recorded by: Darryl Willis on 2016-03-15
Cabarrus Co.
Recorded by: ASH on 2013-05-01
Moore Co.
Recorded by: T. DeSantis on 2008-03-18
Camden Co.