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Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Northern White Skipper. Gallery Prev Next Baldy Cr Rd, Jackson Co, June 28 (new county record) - male Northern White Skipper Heliopetes ericetorum Size: Up to 2 inch wingspan Key ID features: Above pearly-white, with "chains" of dark brown chevrons along wing margins, light on males, bolder and more extensive on females . Below white with irregular vague bands of light tan, pinkish brown or mustard. Similar species: No other similar species in Oregon. Host plant: Various species in the globemallow family. Habitat: Various habitats in arid areas including riverbanks, canyons, roadsides, lower elevation forest openings, weedy fields and alfalfa fields. Range: Primarily Columbia, Deschutes, Snake River and Owyhee river basins, but also recent records in southern Lake and Jackson counties. Season: Early May to early October Abundance: Common Conservation Status: Secure

Butterflies of Oregon has exquisite photos and information about all of Oregon's native butterfly species, covering the identification, distribution and biology of each species. A lively blog provides seasonal stories and updates from the field. Butterflies of Oregon Welcome to Butterflies of Oregon, a resource for Oregon butterfly enthusiasts, with photos of all of Oregon's regularly occurring butterfly species and information to help you find and identify them. Butterflies of Oregon also shares stories of the author's attempt to photograph all of Oregon's butterfly species in the wilds of Oregon. Thanks for visiting! www.butterfliesoforegon.com Subscribe to Blog Thanks for submitting! Email Us

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Lareg Marble butterfly. Gallery Prev Next Hat Point Rd, Wallowa Co, June 30 Large Marble Euchloe ausonides Size: Up to 1.75 inches wingspan Key ID features: Above, milk-white with black pattern on FW tip and narrow black bar in forewing cell, sometimes with light white scaling. Below, bold green marbling with yellow wash against white background and yellow veins. Similar species: California Marble and Desert Marble are smaller. California Marble has pearly or shiny look to white areas on VHW, and green marbling is often darker. Desert Marble lacks white scaling on forewing cell bar, and DFW tip markings often black rather than dark gray. Host plant: Many cruciferous species. Habitat: Open montane and foothill slopes, dry meadows and canyons, sage steppe habitats. Range: All of eastern Oregon and southwestern Oregon south of Douglas County. Season: Late March to late July Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Chalcedona Checkerspot butterfly. Gallery Prev Next Kinney Cr Rd, Jackson Co, May 26 Chalcedona Checkerspot Euphydryas chalcedona Size: Up to 2.75 inch wingspan Key ID features: Above black with alternating red and white spot bands separated by black lines. HW below has red and white bands, which, from the margin run red-white-red-white-white. Submarginal spot band on dorsal HW has larger pale ivory spots than other similar species. Similar species: Edith's checkerspot has red-white-red-red-white band pattern on HW below. Snowberry Checkerspot has smaller spots in the submarginal band on the dorsal HW, often more red on forewing, and longer forewings. Hostplant: Several species in the figwort family, including paintbushes (Castilleja ), penstemons, and monkeyflowers . Habitat: Mountains and high canyons. Range: Warner Mtns, southern Klamath Mtns and in Jackson and Josephine counties along the border with CA . Season: Late April to early August Abundance: Locally common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Spring Azure butterfly. Gallery Prev Next Fitton Green, Linn County, March 26 Echo Azure Celastrina echo AKA Pacific Azure Size: 1.0 - 1.25 inches wingspan Key ID features: Male lilac-blue above, with no black markings. Female dusky-blue, with few marginal spots ringed with gray, FW with dark bands on outer edge. Below, bright gray-white, with very light marginal band of chevrons, and small black spots. Below, gray discal bars on both FW and HW. Similar species: Light markings below with no tails or orange spots distinctive and usually easy to distinguish from other blues. Host plant: Many shrub species including red osier dogwood, elderberry, madrone, snowbrush, and oceanspray . Habitat: Shrubby habitats and riparian areas. Range: Most of Oregon except dry basin and range areas on the east side of Cascade Mtns. Season: Late February to early October Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Mormon Metalmark butterfly. Gallery Prev Next Trout Cr Campground, Jefferson Co, Sep 2 Mormon Metalmark Apodemia mormo Size: 1.0 - 1.2 inch wingspan Key ID features: Males above dark charcoal gray with reddish brown on the FW, and white spots of various shapes, broadly checked wing fringes. Female above similar but darker overall. Below HW with bold white patches against dark brown. FW mirrors pattern of FW above. Similar species: Looks vaguely similar to a copper, but none closely resembles it. Host plant: Many buckwheat species (Eriogonum ) . Habitat: Arid canyons and flats. Range: West of the Cascades, in Columbia and Snake River drainages, and along California border in Klamath and Warner Mtns, and in Cascade-Siskiyou NM. Season: Late July to early October Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Pacuvius Duskywing butterfly. Gallery Prev Next Metolius River, Jefferson Co, June 30 Pacuvius Duskywing Erynnis pacuvius Size: Up to 1.5 inch wingspan Key ID features: Above, FW gray-brown with frosted band and spots, 3-5 tiny hyaline (glassy, translucent) spots on FW. W hen fresh, FW above often has noticeable brown patches. Female FW above often with gray scaling only outside of the dark brown patch in the FW cell area. HW plainer gray-brown sometimes with vague light spots. Below brown with light spots and hyaline spots on FW, few to no small vague spots on HW. Similar species: When fresh, FW above often has noticeable brown patches, which no other Oregon duskywings have. Host plant: Various ceanothus species. Habitat: Shrub lands, dry brushy areas, ponderosa pine/douglas-fir openings. Range: Cascade Range, Siskiyou Mtns, Klamath Mtns, NE Blue Mtns, Wallowa Mtns. Season: Late April to early August Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Silvery Blue butterfly. Gallery Prev Next W Boundary Rd, Lane Co, April 28, male Silvery Blue Glaucopsyche lygdamus Size: 1.0 - 1.2 inches wingspan Key ID features: Male brilliant silvery-blue above, with narrow dark wing borders, white fringes, often with marginal row of small black spots. Female gray-brown with some blue scaling. Below gray or blue-gray, with bold median row of round black spots with white rims, and lighter discal cell end bars on FW and HW. Similar species: Boisduval's Blue has variable submarginal markings on HW and FW below. Host plant: Lupine species (Lupinus ). Habitat: Moist, open areas near lakes, streams and wetlands. Range: All of Oregon except north coast. Season: Mid-March to early September Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Persius Duskywing butterfly. Gallery Prev Next Eight Dollar Rd, Josephine Co, June 5 Persius Duskywing Erynnis persius Size: Up to 1.5 inch wingspan Key ID features: Above, FW gray-brown with indistinct gray markings and 3-5 tiny hyaline (glassy, translucent) spots on FW. Female FW usually more boldly patterned, but less so than Propertius. HW gray-brown with vague light spots. Below dark brown with light spots and hyaline spots on FW, small vague spots on HW. Similar species: Propertius is larger, and usually more strongly marked. When fresh, Pacuvius has brown patches on FW, otherwise look for tibial tufts on hindlegs (Persius has them, Pacuvius does not). Host plant: Pea family species, including lupines (Lupinus ), Thermopsis , Astragalus , and Lotus . Habitat: Open sunny meadows, roadsides and hillsides. Range: Cascade Range, Willamette Valley, much of Coast Range, Ochoco Mtns, Blue Mtns, Wallowa Mtns, Siskiyou Mtns, Klamath Mtns. Season: Mid-April to mid-August Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for Common Ringlet. Gallery Prev Next Jones Canyon, Sherman Co, May 2 Common Ringlet Coenonympha california AKA Ochre Ringlet AKA Coenonympha tullia Size: Up to 1.5 inch wingspan Key ID features: Above plain creamy tan, sometimes peachy orange tan or whitish tan . Below dusky tan to yellowish tan, sometimes with light eye spots, and irregular light bands. Similar species: No similar species in Oregon. Host plant: Both native and non-native grasses and sedges . Habitat: Grassy habitats of all types. Range: All of Oregon except portions of central and northern coast and coast range. Season: Late March to late October Abundance: Very common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for Great Arctic. Gallery Prev Frissell Ridge, Lane Co, July 18 Great Arctic Oeneis nevadensis Size: Up to 2.5 inch wingspan Key ID features: Above orangish tan with dark wing margins and black eyespots, one or more on FW, one or none on HW. Male has dark brown wash on inner half of FW. FW below similar to above, but with gray and black striations along FW leading margin and on wingtip. HW striated with white and brown, dark brown zigzag median lines, and darker band along margin. Similar species: None in Oregon. Host plant: Grasses, but no specific species identified in Oregon . Habitat: Grassy habitats including wet and dry meadows, roadsides, riparian zones. Range: Cascade Range, Siskiyou Mtns, Klamath Mtns, Warner Mtns, Coast Range in Curry County. Season: Late April to late September Abundance: Common in even numbered years in most of range. Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the California Sister butterfly. Gallery Prev Next Hills Cr Rd, Lane Co, Aug 27 California Sister Adelpha californica Size: Up to 3.5 inch wingspan Key ID features: Above dark brown with narrow white band through FW and HW, thinning toward the end of the abdomen, prominent orange patches near wingtips, separated from wingtip by brown margin. Below bands of orange, white and pale lavender, not crossed by black veins. Similar species: Similar to Lorquin's Admiral, which is black above, has orange all the way to the tip of the FW above, and has bolder bands below crossed by black veins. Host plant: Oak species (Quercus ) and Golden chinkapin (Chrysolepis chrysophylla ) . Habitat: Near oak-lined waterways, in oak stands. Range: Throughout western Oregon, except in low areas at the northern end. Season: late May to late October. Abundance: Common Conservation Status: Secure