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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 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 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 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 Gray Marble butterfly. Gallery Prev Next Eight Dollar Mtn Rd, Josephine Co, June 4 Gray Marble Anthocaris lanceolata Size: Up to 2 inches wingspan Key ID features: White above, with small, sparse black markings on FW. Below, light gray marbling on HW and on FW tip. Outer margin of FW is concave, giving slightly hooked appearance to FW. Similar species: Much larger than other Marbles, lacks orange on forewing of Sara Orangetip. Host plant: Crucifers, including several rockcresses. Habitat: Often found on South-facing slopes, on wooded canyons, gullies, washes, steep-walled ravines. Range: Siskiyou Mtns and Warner Mtns. Season: Early May to early July Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Ruddy Copper butterfly. Gallery Prev Next Williams Prairie, Crook Co, July 26 - male Ruddy Copper Tharsalea rubidus AKA Lycaena rubidus Size: 1.1 - 1.25 inches wingspan Key ID features: Male above very bright coppery orange, with few small dark spots . Female above brownish gray orange with black spots, and submarginal spot band, often with orange submarginal zigzag line. Female HW below white with orange wash with very light spots; FW below light orange with black spots. Male similar below with lighter ground color. Similar species: No other Oregon butterfly is as bright orange as the male. Female somewhat similar to Blue Copper, which lacks the orange zigzag above and the orange wash below. Host plant: Dock (Rumex ) species. Habitat: Riparian habitast (near water), including wet montane meadows. Range: Southeastern Oregon, and east of Cascade Mtns from Ochoco Mtns south. Season: Mid-May to late August Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Bauer's Blue butterfly. Gallery Prev Next Alvord Basin, Harney Co, May 29 Bauer's Blue Euphilotes baueri Size: Up to 0.85 inch wingspan Key ID features: Small. Male blue above with narrow dark wing borders, little or no orange along trailing edge of HW. Female dark brown above with prominent orange zigzag along trailing margin. Both sexes have checked fringe on FW. Below bluish-gray with bold black spots, larger on FW, and orange submarginal line edged in black on HW, sometimes as separate spots. Similar species: Best told from other Euphilotes blues by host-plant association, location and flight period. Host plant: Eriogonum ovalifolium (cushion buckwheat). Habitat: Arid deserts with host plant cushion buckwheat. Range: Eastern Harney County, and area around Brothers, Oregon . Season: Early May to early June Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Boiduval's Blue butterfly. Gallery Prev Next Catherine Cr Rd, Wallowa Co, July 8 Boisduval's Blue Icaricia icarioides Size: 1.0 - 1.5 inch wingspan Key ID features: Male bright blue above with charcoal wing borders. Female brown above with orange-brown highlights on FW, often with blue shading basally and vague or no orange band along trailing margin of HW. Both sexes may have dark cell end bars on FW. Male blue-gray below with very small black spots with wide white halos and marginal row of small black triangles. Female below brownish-gray with similar spot pattern. Similar species: Separated from Greenish blues by tiny black spots below having broad white halos, especially on the hindwing, and lack of orange edged triangles at anal angle. Host plant: Many lupine species (Lupinus ) . Fender's Blue subspecies uses Kincaid's Lupine (Lupinus oreganus var. kincaidii ). Habitat: Mountain meadows and roadsides, subalpine slopes, and occasionally lower elevation meadows (Fender's), always near lupines. Range: All of eastern Oregon, plus central Coast Range, and southern Willamette Valley (ssp. I.i. fenderi ) . Season: Late May to early July Abundance: Common east of Cascade Range, locally common at scattered sites in Willamette Valley. Conservation Status: Fender's Blue listed as Endangered federally.

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Becker's White butterfly. Gallery Prev Next Summer Lake, Lake County, August 5 Becker's White Pontia beckerii Size: 1.5 - 2.0 inches wingspan Key ID features: Above, white with black markings near tip of forewing. Below, bold greenish borders along veins especially on hindwing. Similar species: Western White is smaller and much less green along veins below. Host plant: A large number of arid land mustards. Habitat: Arid habitats, both disturbed and undisturbed. Range: Primarily east of the Cascade Mtns, with a few records in the Willamette Valley. Season: Mid-March to mid-September Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Cedar Haristreak butterfly. Gallery Prev Next Upper Klamath River, Klamath Co, May 29 Cedar/Juniper Hairstreak Callophrys gryneus Size: 1.0 - 1.25 inches wingspan Key ID features: Found near cedar or juniper trees . Above, gray-brown or reddish brown, sometimes with redder patches near tails. Below, shades of brown, gray, and violet, with white postmedian line that varies from bold to nearly absent. Blue submarginal ("thecla") patches near tails vary in size and brightness, but usually lacking orange. Similar species: Johnson's Hairstreak is darker shade of brown, postmedian white line is bolder with a more pronounced "M" on the HW, and generally only found in and near old growth forest. Host plant: Western redcedar (Thuja plicata ), incense cedar (Calocedrus decurrens ) and western juniper (Juniperus occidentalis ). Habitat: Roadsides, meadows, riparian zones, forest edges and clearings near the host plant. Range: Most of Oregon, but missing from most of Coast Range, Blue Mtns, Wallowas and Malheur County. Season: Late March to early August Abundance: Abundant Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Eastern Tailed Blue butterfly. Gallery Prev Next Doral View Little Groundhog Mtn, Lane Co, July 22 - female Eastern Tailed-Blue Cupido comyntas Size: 0.75 - 1.0 inches wingspan Key ID features: Male bright blue above, female dark gray or gray-brown, with coppery-green iridescence when fresh. HW with white fringe and marginal band of black spots with gray borders. Below, gray or bluish-gray, with black spots rimmed with white, variable marginal band of spots and chevrons, orange patches next to small white-tipped tails. Usually shows black cell-end bar on FW above and below. Similar species: Western Tailed-Blue tends to be whiter below and usually lacks black cell end bar on the FW above. Host plant: Many species in the pea family including lupines, vetches and clovers . Habitat: Often in weedy, disturbed habitats, but also in native wet meadows and riparian areas. Range: West of the Cascade Range, Wallowa Mtns and NE Blue Mtns. Season: Early April to early August Abundance: Common Conservation Status: Secure