Sleepy Duskywing
Erynnis brizo (Boisduval & Leconte, [1837])
Family: Hesperiidae
Subfamily: Pyrginae
Identification: Antennal clubs are blunt. Upperside brown; forewing with 2 wide gray bands and no transparent spots. Male has a costal fold containing yellow scent scales; female has a patch of scent scales on the 7th abdominal segment.
Wing Span: 1 1/4 - 1 3/4 inches (3.2 - 4.5 cm).
Life History: To seek females, males perch in clearings and on hilltops throughout the day. Patrolling around the host plants occurs when there is a high density of males. Females deposit single eggs on young leaves or leaf buds of the host plants. Caterpillars feed on leaves and rest in leaf shelters; fully-grown caterpillars hibernate.
Flight: One brood; from January-May in Florida and Texas, from March-June in the rest of the range.
Caterpillar Hosts: Scrub oak (Quercus ilicifolia) and other shrubby oaks.
Adult Food: Nectar from flowers of heaths (Ericaceae) including wild azalea and blueberry; also blackberry and dandelion.
Habitat: Oak or oak-pine scrub, chaparral, barrens; on well-drained sandy or shaly soils.
Range: In the west from California east to Utah and southern Wyoming; south through the mountains to Arizona, New Mexico, Baja California Norte and central Mexico. In the east from Manitoba south through southern Ontario and the eastern United States to central Florida, the Gulf Coast, and central Texas.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
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Verified Sightings
Displaying 1 - 24 of 1663 verified sightings
Observation date: Mar 15, 2024
Submitted by: beverlynantz
Region: Harlan County, Kentucky, United States
Verified by: CA Ivy
Verified date: Jul 21, 2025
Observation date: Jun 09, 2025
Submitted by: ezeemonee
Region: El Paso County, Colorado, United States
Verified by: mikefisher
Verified date: Jun 15, 2025
Observation date: Mar 15, 2025
Submitted by: FRANK S.
Region: Orange County, Florida, United States
Verified by: John Calhoun
Verified date: May 23, 2025
Observation date: Mar 21, 2025
Submitted by: RRAZ
Region: Coconino County, Arizona, United States
Verified by: John Saba
Verified date: May 19, 2025
Observation date: May 16, 2025
Submitted by: DeepSkyKelly
Region: Colfax County, New Mexico, United States
Verified by: stevecary
Verified date: May 17, 2025
Observation date: May 07, 2025
Submitted by: jmgesell
Region: Carbon County, Pennsylvania, United States
Verified by: davidwright
Verified date: May 12, 2025
Observation date: Apr 27, 2025
Submitted by: Benjamin Miller
Region: Knox County, Ohio, United States
Verified by: rogerdowner
Verified date: May 03, 2025
Observation date: May 01, 2025
Submitted by: jmgesell
Region: Monroe County, Pennsylvania, United States
Verified by: davidwright
Verified date: May 02, 2025
Observation date: Apr 24, 2025
Submitted by: DeepSkyKelly
Region: Colfax County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 27, 2025
Observation date: Mar 28, 2025
Submitted by: pauhana
Region: Wilson County, Tennessee, United States
Verified by: James Steen
Verified date: Apr 19, 2025
Observation date: Apr 14, 2025
Submitted by: Dogoszhi
Region: Bernalillo County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 14, 2025
Observation date: Apr 08, 2025
Submitted by: Gordon Berman
Region: Doña Ana County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 14, 2025
Observation date: Mar 24, 2025
Submitted by: jamesvonloh
Region: Doña Ana County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 14, 2025
Observation date: Mar 09, 2025
Submitted by: ridgeboy
Region: Osceola County, Florida, United States
Verified by: John Calhoun
Verified date: Mar 10, 2025
Observation date: Mar 01, 2022
Submitted by: dvollmar
Region: Osceola County, Florida, United States
Verified by: John Calhoun
Verified date: Sep 15, 2024
Observation date: May 02, 2024
Submitted by: hasfitz5
Region: Lincoln County, New Mexico, United States
Verified by: stevecary
Verified date: Jun 06, 2024
Observation date: May 02, 2024
Submitted by: hasfitz5
Region: Lincoln County, New Mexico, United States
Verified by: stevecary
Verified date: Jun 06, 2024
Observation date: May 03, 2024
Submitted by: tjunderwood
Region: Berks County, Pennsylvania, United States
Verified by: davidwright
Verified date: May 29, 2024
Observation date: May 26, 2024
Submitted by: DeepSkyKelly
Region: Union County, New Mexico, United States
Verified by: stevecary
Verified date: May 28, 2024
Observation date: May 11, 2024
Submitted by: camflies
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: May 12, 2024
Observation date: May 11, 2024
Submitted by: camflies
Region: Kern County, California, United States
Verified by: Ken Davenport
Verified date: May 12, 2024
Observation date: Apr 22, 2024
Submitted by: mikeminium
Region: Ross County, Ohio, United States
Verified by: rogerdowner
Verified date: May 11, 2024
Observation date: Apr 12, 2024
Submitted by: Robert Gorman
Region: Riverside County, California, United States
Verified by: Ken Davenport
Verified date: May 05, 2024
Observation date: Apr 13, 2024
Submitted by: Marta Reece
Region: Grant County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 25, 2024
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