Western Yellowstriped Armyworm
Spodoptera praefica (Grote, 1875)
Family: Noctuidae
Subfamily: Noctuinae
Identification: Adult: forewing variably grayish-brown to yellowish-brown with pale scaling along veins; oblique yellowish shade line extends across orbicular spot toward PM line; basal, AM, PM, and ST lines irregular, pale yellow or white; hindwing pale gray with dark veins and discal lunule, thin dark terminal line, and white fringe
Larva: head black with inverted white Y shape on front; body black with prominent white or yellow dorsolateral line; 3 stripes along each side - a gray one near the top, a black one below that, and a reddish-brown one below that.
Wing Span: 3.5-4.0 cm
Life History:
Flight: March and April, and again in August and September
Caterpillar Hosts: leaves of crops such as alfalfa, potato, rice, sugarbeet, and sweet potato, plus various other herbaceous plants
Adult Food:
Habitat:
Range: British Columbia to California, east to Utah, north to Alberta
Conservation:
NCGR:
Management Needs:
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Verified Sightings
Displaying 1 - 24 of 29 verified sightings
Observation date: Apr 21, 2025
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 22, 2025
Observation date: Apr 08, 2025
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 08, 2025
Observation date: Apr 07, 2025
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 07, 2025
Observation date: Jul 10, 2024
Submitted by: J_Martineau
Region:
Verified by: J_Martineau
Verified date: Dec 02, 2024
Observation date: Jul 02, 2024
Submitted by: bobscafe
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Aug 16, 2024
Observation date: Aug 09, 2024
Submitted by: bobscafe
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Aug 12, 2024
Observation date: Apr 11, 2024
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 16, 2024
Observation date: Apr 25, 2023
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 28, 2023
Observation date: Apr 24, 2023
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 28, 2023
Observation date: Apr 20, 2023
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 25, 2023
Observation date: Apr 17, 2023
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 20, 2023
Observation date: Apr 16, 2023
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 17, 2023
Observation date: Apr 16, 2023
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 17, 2023
Observation date: Apr 08, 2023
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Apr 10, 2023
Observation date: Jul 04, 2022
Submitted by: J_Martineau
Region:
Verified by: J_Martineau
Verified date: Dec 05, 2022
Observation date: Aug 07, 2022
Submitted by: cklindsey
Region: Walla Walla County, Washington, United States
Verified by: davidwdroppers
Verified date: Aug 07, 2022
Observation date: Jun 29, 2019
Submitted by: Lemon_and_Licorice
Region: Butte County, California, United States
Verified by: mcduck
Verified date: Mar 14, 2022
Observation date: Aug 08, 2021
Submitted by: J_Martineau
Region: Sheridan County, Wyoming, United States
Verified by: J_Martineau
Verified date: Jan 13, 2022
Observation date: Jul 14, 2021
Submitted by: J_Martineau
Region: Lincoln County, Wyoming, United States
Verified by: J_Martineau
Verified date: Dec 09, 2021
Observation date: Aug 08, 2018
Submitted by: bobscafe
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Oct 09, 2018
Observation date: Aug 16, 2018
Submitted by: bobscafe
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Aug 28, 2018
Observation date: Aug 15, 2018
Submitted by: John W Ashley
Region: Flathead County, Montana, United States
Verified by: davidwdroppers
Verified date: Aug 20, 2018
Observation date: Oct 19, 2015
Submitted by: klebo
Region: San Bernardino County, California, United States
Verified by: Robert Martin
Verified date: Jan 20, 2016
Observation date: Nov 08, 2015
Submitted by: KittKatt
Region: Los Angeles County, California, United States
Verified by: Robert Martin
Verified date: Dec 12, 2015
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