Attributes of Macronoctua onusta

Iris Borer Moth
Macronoctua onusta (Grote, 1874)

Family: Noctuidae
Subfamily: Noctuinae
Identification: Thorax blackish. Forewing dark brown with variable black shading. Lines and spots very thin, black; most conspicuous marking is dash-like lower end of reniform spot. Hindwing grayish brown, darker toward margin.
Wing Span: 4-5.4 cm.
Life History: Larva (Iris Borer) bores into host plant.
Flight: September-October.
Caterpillar Hosts: Corms and rhizomes of iris and sometimes gladiolus.
Adult Food:
Range: Nova Scotia to South Carolina, west to Minnesota, Missouri, and Mississippi.
Management Needs:
Taxonomy Notes:

Images of Macronoctua onusta

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Macronoctua onusta - Macronoctua-onusta-Bob-Moul-418.jpg

Macronoctua onusta - Macronoctua-onusta-Bob-Moul-418.jpg
Macronoctua onusta - Macronoctua_onusta-Lehman_edited.jpg

Macronoctua onusta - Macronoctua_onusta-Lehman_edited.jpg

The map below displays all BAMONA data for this species and has three different data layers:
1. All records (yellow dots)   2. Recently verified records (orange dots)*   3. US county records (purple)

There are also three base layers: 1. Satellite    2. Normal   3. Hybrid

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*The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. Sometimes, there are several records at the same location. Use the table view to access these records.

By default, the fifty most recently verified sightings are below. Sort by Observation Date to see the most recent sightings, or filter the sightings by region to get a regional list.

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Observation Date Submitter Region Verified Datesort icon
September 17, 2013 Scott King Rice County, Minnesota, United States February 27, 2014 Details
October 05, 2012 Lula Field Worcester County, Massachusetts, United States February 08, 2014 Details
October 01, 2013 curtis.lehman (Ken Lebo) Berks County, Pennsylvania, United States November 04, 2013 Details
September 29, 2013 BeaLaporte Ontario, Canada September 29, 2013 Details
September 20, 2013 Aboover Knox County, Maine, United States September 24, 2013 Details
September 19, 2013 Shane Miller Washington County, Pennsylvania, United States September 22, 2013 Details
September 10, 2013 Leslie Warren Mahoning County, Ohio, United States September 21, 2013 Details
September 07, 2013 curtis.lehman (Margaret Higbee) Indiana County, Pennsylvania, United States September 09, 2013 Details
October 02, 2012 Ilona L. Dane County, Wisconsin, United States March 22, 2013 Details
September 07, 2012 curtis.lehman (Rory Bower) Mifflin County, Pennsylvania, United States September 23, 2012 Details
September 01, 2011 rogerdowner Wayne County, Ohio, United States February 21, 2012 Details
September 14, 2001 drkilmer Frederick County, Maryland, United States January 25, 2011 Details
September 06, 2010 legacy.reporter (Jerry Skinner) Susquehanna County, Pennsylvania, United States December 31, 2010 Details
September 06, 2010 legacy.reporter (Jerry Skinner) Susquehanna County, Pennsylvania, United States December 31, 2010 Details
September 25, 2006 legacy.reporter (Jeffrey P. Crolla) Ontario, Canada September 13, 2010 Details
October 02, 2009 BobMoul (Bob Moul) Adams County, Pennsylvania, United States December 16, 2009 Details
September 28, 2008 Holly_Grant (Holly Grant) Strafford County, New Hampshire, United States November 14, 2008 Details
September 28, 1996 curtis.lehman (Curt Lehman) Allegheny County, Pennsylvania, United States October 29, 2008 Details