Pale Swallowtail
Papilio eurymedon Lucas, 1852
Family: Papilionidae
Subfamily: Papilioninae
Identification: Upper surface of wings creamy white with black stripes. Front wing is narrow and pointed; tail of hindwing is long, slender and twisted.
Wing Span: 2 1/2 - 3 1/2 inches (6.4 - 9 cm).
Life History: Males perch and patrol for receptive females. Females lay eggs singly on host plant leaves. Caterpillars feed on leaves and rest on silken mats in shelters of curled leaves. Pupae hibernate.
Flight: One flight from April-July, many flights in southern California from March-August.
Caterpillar Hosts: Trees and shrubs in the Rosaceae, Rhamnaceae and Betulaceae families including cherry (Prunus emarginata), coffee-berry (Rhamnus californica), and ash (Fraxinus spp.).
Adult Food: Flower nectar including California buckeye, yerba santa, and wallflower.
Habitat: Foothills, open woodlands, chaparral, streamsides.
Range: British Columbia east to Montana, south to New Mexico. California and Baja California.
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 noted.
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Verified Sightings
Displaying 25 - 48 of 915 verified sightings
Observation date: Jul 24, 2023
Submitted by: madamirie
Region: Shasta County, California, United States
Verified by: Ken Davenport
Verified date: Aug 28, 2023
Observation date: May 29, 2020
Submitted by: Robb Hannawacker
Region: San Juan County, Utah, United States
Verified by: James Steen
Verified date: Aug 21, 2023
Observation date: Aug 06, 2023
Submitted by: Robert Gorman
Region: Mono County, California, United States
Verified by: Ken Davenport
Verified date: Aug 18, 2023
Observation date: Aug 08, 2023
Submitted by: Erika Z
Region: Los Angeles County, California, United States
Verified by: Ken Davenport
Verified date: Aug 09, 2023
Observation date: Jul 18, 2023
Submitted by: flyinganvil
Region: Klamath County, Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 07, 2023
Observation date: Jul 29, 2023
Submitted by: MAKI
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: Aug 03, 2023
Observation date: Jul 25, 2023
Submitted by: madamirie
Region: Tehama County, California, United States
Verified by: Ken Davenport
Verified date: Aug 03, 2023
Observation date: Jul 25, 2023
Submitted by: madamirie
Region: Shasta County, California, United States
Verified by: Ken Davenport
Verified date: Aug 03, 2023
Observation date: Jul 25, 2023
Submitted by: madamirie
Region: Shasta County, California, United States
Verified by: Ken Davenport
Verified date: Aug 03, 2023
Observation date: Jul 20, 2023
Submitted by: Zencoyote
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: Jul 23, 2023
Observation date: Jun 04, 2023
Submitted by: J Thrift
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: Jul 23, 2023
Observation date: May 17, 2023
Submitted by: sleeson
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: Jul 23, 2023
Observation date: Jun 04, 2023
Submitted by: J Thrift
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: Jul 23, 2023
Observation date: Jul 15, 2023
Submitted by: tjay13
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 21, 2023
Observation date: Jul 02, 2023
Submitted by: hasfitz5
Region: Lassen County, California, United States
Verified by: Ken Davenport
Verified date: Jul 15, 2023
Observation date: Jul 05, 2023
Submitted by: RoxannaTessman
Region: Jackson County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jul 12, 2023
Observation date: Jul 04, 2023
Submitted by: NikkiM
Region: Stillwater County, Montana, United States
Verified by: J_Martineau
Verified date: Jul 11, 2023
Observation date: Jun 22, 2023
Submitted by: pdxgene711
Region: Clackamas County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jun 25, 2023
Observation date: Jun 19, 2023
Submitted by: madamirie
Region: Santa Cruz County, California, United States
Verified by: Ken Davenport
Verified date: Jun 20, 2023
Observation date: Jun 15, 2023
Submitted by: pdxgene711
Region: Linn County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jun 20, 2023
Observation date: Jun 18, 2023
Submitted by: Seth Mueller
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Jun 20, 2023
Observation date: Jun 18, 2023
Submitted by: RoxannaTessman
Region: Jackson County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jun 18, 2023
Observation date: May 31, 2023
Submitted by: hasfitz5
Region: Contra Costa County, California, United States
Verified by: Ken Davenport
Verified date: Jun 12, 2023
Observation date: Jun 08, 2023
Submitted by: Lupine1
Region: Lewis County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 10, 2023
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