Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Dreamy Duskywing butterfly. Gallery Prev Next Box Canyon Meadows, Lane Co, July 9 Dreamy Duskywing Erynnis icelus Size: Up to 1.5 inch wingspan Key ID features: Small for a Duskywing. Males have hump at leading edge of FW. Above, FW gray-brown with frosted band and spots, no hyaline (translucent) spots near FW tip as on other Duskywings. HW plainer gray-brown with vague light spots. Below brown with light spots and pale gray patch near FW tip. Similar species: Other duskywings are larger, and have translucent hyaline spots on FW. Host plant: Willows and aspens. Habitat: Open meadows and road cuts, up to mid-elevations. Range: Siskiyou Mtns, Cascade Range, Blue Mtns, Wallowa Mtns, northern Coast Range. Season: Early April to late July Abundance: Uncommon 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

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 Gold-hunters Hairstreak butterfly. Gallery Prev Next Kinney Cr Rd, Jackson Co, May 26 Thank you to Dana Ross and Paul Hammond, volunteers at OSAC! Gold-hunter's Hairstreak Satyrium auretorum Size: 1.0 - 1.25 inches wingspan Key ID features: Light brown above. Slightly darker brown below with variable uneven spot bands, and submarginal band of black chevrons, female more strongly marked. Tail barely noticeable, with adjacent blue frosted patch, and one or two of the chevrons with a small orange patch. Similar species: Somewhat similar to Hedgerow HS, which has more defined median line on HW below. Mountain Mahogany HS is more grayish below, often with a more frosted look. Host plant: Oaks (Quercus ), primarily Oregon White Oak (Quercus garryana ) . Habitat: Oak-pine stands and shrubby habitats near oaks. Range: Along California border in Jackson County and SE Klamath County. Season: Early June to mid-July Abundance: Uncommon Conservation Status: Secure

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 Gillett's Checkerspot butterfly. Gallery Prev Next Oregon State Arthropod Collection, #000176215 - male Thank you to Dana Ross and Paul Hammond , volunteers at OSAC! Gillett's Checkerspot Euphydryas gillettii Size: Up to 2 inch wingspan Key ID features: Above black with red and white spots, wide red band through both wings, usually with narrow white bands on both sides. Below similar pattern, but with black reduced, and confined to narrow lines between red and white patches. Similar species: This is the only Oregon checkerspot with wide red submarginal spot bands above. Host plant: Species in the honeysuckle family, possibly black twinberry (Lonicera involucrata ) and red twinberry (L. utahensis ) . Habitat: High flowery meadows. Often occurs near small streams or wetlands, not straying far from its host plants and nectar sources. Range: On the summit of the west rim of Snake River Canyon near Hat Point . Season: Late June to early July Abundance: Uncommon Conservation Status: Secure in other states. Survival of colonies may depend on wildfire interrupting habitat succession. Current Oregon population unknown.

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the California Crescent butterfly. Gallery Prev Next Lincoln Cr Rd, Jackson Co, May 20 California Crescent Phyciodes orseis Size: Up to 1.5 inch wingspan Key ID features: Above, rows of orange and light orange spots separated by black. FW margin slightly indented. HW above with submarginal band of small black dots circled with orange. Below, bands of orange, cream and white with brown patches, postmedian yellow-tan band with small brown dots . Knobs on anntennae mostly orange. Similar species: Range does not overlap with Pale Crescent, P. orseis is larger than Field or Mylitta. Host plant: Thistles including Cirsium cymosum and C. andersonii . Habitat: Dry hillsides, streamsides and canyons. Range: Southern Siskiyou Mtns, Warner Mtns . Season: Late March to early August Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Green Comma butterfly. Gallery Prev Next Lost Lake, Linn Co, August 1 Green Comma Polygonia faunus Size: Up to 2 inch wingspan Key ID features: Above deep orange with black blotches and spots, often with very jagged wing edges, submarginal row of yellow spots on brown to black marginal band. Below striated bands of gray-brown and gray, and prominent curved (not pointed) white comma in center of HW, often barbed on one end. Similar species: Satyr Comma has brown shades below, and barbed white comma on HW. Hoary comma lacks submarginal shading below. Oreas comma has pointed white "v" below. Host plant: Willows, aspen and alders . Habitat: Conifer forest openings, meadows, roadsides. Range: All of western Oregon , plus Warner Mtns, Ochoco Mtns, Wallowa Mtns and Blue Mtns . Season: Late February to late September Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Clouded Sulphur butterfly. Gallery Prev Next Gateway alfalfa fields, Jefferson Co, Sep 2 - male Thank you to Dana Ross and Paul Hammond , volunteers at OSAC! Clouded Sulphur Colias philodice AKA: Colias eriphyle Eriphyle's Sulphur Size: 2.0 - 2.5 inches wingspan Key ID features: Pale yellow above with black or dark gray border, lime-green or yellow below. Some females lack yellow pigment and are white with black border above. Forewing below has blackish submarginal spots, hindwing below has submarginal row of brown "eurytheme" spots. Discal spot usually enclosed by double red ring with satellite spot. Similar species: Male Orange Sulphur is shaded with orange. White females very difficult to separate, but in Orange Sulphur they tend to have a bolder dark border on the hindwing above. Western Sulphur has single red ring enclosing the discal spot. Host plant: Many species in the pea family. Habitat: Many types of habitats, both disturbed and undisturbed, but usually not along roads in deep forest. Range: All of eastern Oregon. Season: early May to mid-October Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Peck's Skipper butterfly. Gallery Prev Next Rd 3925, Grant Co, June 30 Peck's Skipper Polites peckius Size: Up to 1.25 inch wingspan Key ID features: Above, dark brown (males darker) with clusters of orange bars, and males with orange-brown on leading edge . FW below dark brown with mustard yellow patches. HW below mottled reddish brown with mustard yellow patches in connected bands. Similar species: HW pattern below is unique. Host plant: Grass species, Kentucky bluegrass, saltgrass, and bromes. Habitat: Wet meadows, roadsides and riparian areas. Range: Wallowa and Blue Mtns. Season: Late June to early August Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Compton's Tortoiseshell butterfly. Gallery Prev Next Oregon State Arthropod Collection #0001093061- male Thank you to Dana Ross and Paul Hammond , volunteers at OSAC! Compton Tortoiseshell Nymphalis l-album Size: Up to 3 inch wingspan Key ID features: FW above rusty orange with black patches, dark mustard yellow border and marginal band with black line between. HW brown with broader mustard bands, and white bar at leading edge with dark patches on each side. Below two-toned brown or gray, with darker inner half and lighter striated outer half, blue-gray submarginal band. HW below with flattened silver "v," sometimes reduced or absent. Similar species: Above, white bar on leading edge of HW is unique. Host plant: Birches, willows, and aspens . Habitat: Typically found along streams in forested areas, and in mountain canyons. Range: Wallowa Mtns, and far NE Blue Mtns . Season: Early March to mid-October. Abundance: Scarce, may not breed in Oregon every year. Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the American Lady butterfly. Gallery Prev Next Westlake Boat Ramp, Lane Co, October 20 American Lady Vanessa virginiensis Size: Up to 2.25 inch wingspan Key ID features: Above bright orange with black FW tips that contain a vertical white bar and a few small white spots. HW above orange with submarginal row of black spots with blue centers. Below, HW gray brown with two large eye spots, and web of white lines. FW below has bright salmon orange crossed by black. Similar species: Other lady species have several small eyespots on HW below. Hostplant: Pearly everlasting (Anaphalis margaritacea ), pussytoes (Antennaria ) and many other species . Habitat: Sunny meadows, roadsides, fields, and parks. Range: Throughout Oregon except far north on the east side of Cascades . Season: M id-April to early November. Abundance: Common Conservation Status: Secure