Sagebrush Girdle Moth
Plataea trilinearia (Packard, 1873)
Family: Geometridae
Subfamily: Ennominae
Identification: Forewings white, with gray or grayish brown scaling; basal area gray or grayish brown, extending outwardly along inner margin to middle of wing; maculation similar to that of personaria but with posterior, elliptical lobe of median area tending to be larger, and with t.p. line irregular in course, not inwardly dentate; median area outlined by prominent white band; discal dash white, elongate, prominent; subterminal and terminal areas concolorous; terminal line varying from absent to complete, narrow, dark brown; fringe white, brown opposite vein endings. Hind wings white, with variable number of pale grayish brown scales; maculation absent in most specimens, some with small discal dot and trace of dark subterminal area; terminal line as on forewings; fringe white, some specimens with small amount of brown scaling opposite veins.
Wing Span: 3.0-4.6 cm
Life History:
Flight: February to September in the south; May to August in the north (Alberta). They are most commonly seen (often in large numbers at lights) in spring.
Caterpillar Hosts: Larval foodplant apparently unknown but presumed to be wormwood (Artemisia sp.) - the same as that of a sister species Plataea personaria.
Adult Food:
Habitat: Varied, mostly arid and semiarid environments such as desert grasslands and mountians, sagebrush flats, short grasslands, and prairie badlands
Range: southeastern British Columbia to southwestern Saskatchewan, south to California and central Texas, and into Mexico
Conservation:
NCGR:
Management Needs:
Taxonomy Notes: None.
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Verified Sightings
Displaying 1 - 24 of 26 verified sightings
Observation date: Jun 14, 2021
Submitted by: Dwaine Wagoner
Region: Natrona County, Wyoming, United States
Verified by: J_Martineau
Verified date: Dec 03, 2021
Observation date: May 25, 2021
Submitted by: dlister
Region: Douglas County, Nevada, United States
Verified by: J_Martineau
Verified date: Jun 27, 2021
Observation date: Jun 05, 2021
Submitted by: kathy lichtendahl
Region: Carbon County, Montana, United States
Verified by: davidwdroppers
Verified date: Jun 06, 2021
Observation date: May 14, 2015
Submitted by: techs
Region: Crook County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: May 25, 2014
Submitted by: techs
Region: Crook County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: Jun 23, 2019
Submitted by: donker254
Region: Fall River County, South Dakota, United States
Verified by: J_Martineau
Verified date: Jun 29, 2020
Observation date: Jun 14, 2019
Submitted by: J_Martineau
Region: Crook County, Wyoming, United States
Verified by: J_Martineau
Verified date: Dec 04, 2019
Observation date: Jun 19, 2006
Submitted by: hydapse
Region: Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Sep 11, 2018
Observation date: Apr 28, 2018
Submitted by: A_baldini
Region: Weld County, Colorado, United States
Verified by: charleseharp
Verified date: May 06, 2018
Observation date: Mar 04, 2018
Submitted by: amzapp
Region: Texas, Lubbock County, United States
Verified by: stomlins701
Verified date: Mar 05, 2018
Observation date: Jun 03, 2016
Submitted by: J_Martineau
Region: Dawson County, Montana, United States
Verified by: J_Martineau
Verified date: Jan 06, 2017
Observation date: Mar 28, 2015
Submitted by: DebW
Region: Curry County, New Mexico, United States
Verified by: apan123
Verified date: Aug 03, 2016
Observation date: Jun 22, 2015
Submitted by: J_Martineau
Region: Teton County, Wyoming, United States
Verified by: J_Martineau
Verified date: Dec 10, 2015
Observation date: Jun 09, 2015
Submitted by: Kristie Nelson
Region: Mono County, California, United States
Verified by: Josiah Gilbert
Verified date: Jun 09, 2015
Observation date: Jun 10, 2014
Submitted by: J_Martineau
Region: Carbon County, Wyoming, United States
Verified by: J_Martineau
Verified date: Nov 26, 2014
Observation date: Jun 20, 2014
Submitted by: coreyk
Region: Clark County, Nevada, United States
Verified by: Josiah Gilbert
Verified date: Aug 22, 2014
Observation date: Jun 29, 2014
Submitted by: jim.odonater
Region: Lake County, Oregon, United States
Verified by: Robert Martin
Verified date: Jul 07, 2014
Observation date: Jun 06, 2014
Submitted by: michaeloberg
Region: Garfield County, Colorado, United States
Verified by: charleseharp
Verified date: Jun 21, 2014
Observation date: May 04, 2013
Submitted by: J_Martineau
Region: Sheridan County, Wyoming, United States
Verified by: J_Martineau
Verified date: Dec 09, 2013
Observation date: Jun 28, 2008
Submitted by: hjbarkey9
Region: Routt County, Colorado, United States
Verified by: curtis.lehman
Verified date: Jul 18, 2013
Observation date: Jun 02, 2012
Submitted by: davidwdroppers
Region: Yakima County, Washington, United States
Verified by: davidwdroppers
Verified date: Dec 17, 2012
Observation date: Apr 22, 2012
Submitted by: Matt ODonnell
Region: Roosevelt County, New Mexico, United States
Verified by: kmortensen
Verified date: Sep 16, 2012
Observation date: Jul 03, 2011
Submitted by: J_Martineau
Region: Carbon County, Wyoming, United States
Verified by: J_Martineau
Verified date: Sep 08, 2012
Observation date: May 16, 2012
Submitted by: Dwaine Wagoner
Region: Natrona County, Wyoming, United States
Verified by: J_Martineau
Verified date: May 17, 2012
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