Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Cabbage White butterfly. Gallery Prev Next Lost Lake, Linn Co, August 21 Cabbage White Pieris rapae Size: 1.25 - 1.75 inches wingspan Key ID features: Males white with one black spot and black apex on FW. Female white with two black spots and black FW apex. Yellowish below. Similar species: Mustard White lacks black spots on FW. Host plant: Many species of mustards, including food plants in the cabbage family. Habitat: Found in most habitat types. Range: Introduced from Europe. Found throughout Oregon. Season: Early March to early November Abundance: Abundant Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Common Buckeye butterfly. Gallery Prev Next Lost Lake, Linn Co, August 19 Gray Buckeye Junonia grisea AKA Common Buckeye Size: Up to 2.5 inch wingspan Key ID features: Above mauve-brown with large eye spots on both FW and HW. FW above has curving band of ivory almost forming a "6" around one of the eyes, and two orange bars ringed in black on the leading edge. Relatively unmarked below, with irregular bands of pale tans and grays, and pale submedian row of spots on the HW. Similar species: No other Oregon butterfly has large eye spots on FW and HW against brown-gray ground color. Host plant: A variety of species in the figwort family, including penstemons, paintbrushes, veronicas and monkeyflowers . Habitat: Forest openings, riparian areas, subalpine meadows, mostly above 3,000 feet. Range: Nearly all of southern half of Oregon, and both flanks of the Cascades from Wasco County south . Season: Late May to late October Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Acmon Blue butterfly. Gallery Prev Next Gert Canyon, Wasco Co, May 4 - male Acmon Blue Icaricia acmon Size: 0.8 - 1.0 inch wingspan Key ID features: Male blue above with narrow black marginal band and white fringe, on HW orange band above marginal row of black spots. Female brown above with darker marginal line and white fringe, on HW broad orange band above row of dark brown marginal spots. Below, light bluish gray with black spots, on HW row of marginal spots that are black inwardly, then orange, and outwardly black with a center circle of iridescent blue. Similar species: Lupine Blue very similar, but tends to be larger, and on males, tends to have a dark border between red-orange band and blue on HW above (Acmon usually has pinkish-orange band transitioning directly to blue). Host plant: Several Buckwheat (Eriogonum ) species and many pea family species including Lotus, Melilotus, and Lupinus . Habitat: Wide range of habitats, from sea level lowlands to montane habitats. Range: Found in all of Oregon except the far NW corner. Season: Early April to early October Abundance: Widespread and common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Western Tiger Swallowtail butterfly. Gallery Prev Next Royal Avenue, Lane Co, May 28 Western Tiger Swallowtail Papilio rutulus Size: 2.75 - 3.75 inches wingspan Key ID features: Upperside yellow with vertical black bands, prominent tails, blue chevrons above long single tail. Below, very similar to above, with red-orange shading in yellow marginal spots near the tail. Similar species: Anise Swallowtail has more black on forewing; Pale Swallowtail much paler; Two-tailed Swallowtail is larger, has double tails, broader yellow bands. Host plant: Willows, maples, and many other native trees. Habitat: Riparian areas, canyons, watersides, trail, parks, often near water. Range: Throughout Oregon, often lower than Pale Swallowtail, but sometimes up to 7,000 feet. Season: Mid-April - mid-August Abundance: Very common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Milbert's Tortoiseshell butterfly. Gallery Prev Next Sand Cr, Klamath Co, June 25 Milbert's Tortoiseshell Aglais milberti Size: Up to 2 inch wingspan Key ID features: Unmistakable. Above black with broad red and orange submarginal band across FW and HW, and HW with blue spots in black marginal band. Below two-toned with very dark inner half and brown striated outer half with darker margin. Similar species: Above, unlike any other Oregon species. Below, California Tortoiseshell less distinctly two-toned, outer band more variable and more gray than brown. Host plant: Stinging Nettle (Urtica dioica ) . Habitat: Wherever nettles grow, often in wet areas or along waterways. Range: Throughout Oregon . Season: Potentially any time of year, but mostly January to October. Abundance: Common. Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Common Checkered Skipper. Gallery Prev Next Illinois River Rd, Josephine Co, April 23 Common Checkered Skipper Burnsius communis Size: Up to 1 inch wingspan Key ID features: Above, very dark brown, with gray shading basally on FW, boldly checked fringes and numerous bright white patches (longer than on Two-Banded) . Overall lighter than Two-Banded due to more white patches. Below large white patches, with jagged brown bands, edged in darker brown. Similar species: Two-Banded Checkered Skipper is darker, has fewer white spots above and less white below. Host plant: Various species in the mallow family. Habitat: Found in a wide variety of habitats, both disturbed and undisturbed. Range: All of Oregon except the far NW corner. Season: Mid-April to mid-September Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Northern Cloudywing butterfly. Gallery Prev Next Staly Creek, Lane Co, June 25 Northern Cloudywing Thorybes pylades AKA Cecropterus pylades Size: Up to 2 inch wingspan Key ID features: Above very dark brown with a few narrow white bars and spots on FW. Bars and spots translucent. Below similar to above, dark brown with with a few narrow tan or off-white bars and spots on FW. Similar species: Western Cloudywing flies notably faster, perches on rocks, has shorter white sub-cell bar in FW. Host plant: Many legume species, but often associated with Lotus crassifolius in Oregon . Habitat: Canyons, clearings and flowery flatlands. Range: Cascade Range, Eastern Blue Mtns, Wallowa Mtns, Siskiyou Mtns, Klamath Mtns, Warner Mtns. Season: Late April to mid-July Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for Mylitta Crescent butterfly. Gallery Prev Next Hills Creek Rd, Lane Co, Aug 27, male Mylitta Crescent Phyciodes mylitta Size: Up to 1.5 inch wingspan Key ID features: Above, orange with black spots, checks and borders. Females have wider black border above. Fringes checked. HW above with submarginal band of small black dots circled with orange, on males this is below large unmarked orange patch. HW below cream, tan and brown bands and patches, and bright marginal crescent below midpoint, haloed with brown. Similar species: Pale Crescent is larger than Field or Mylitta. Mylitta lacks nearly rectangular black bar at trailing edge of FW above. Host plant: Mostly thistles, including Cirsium arvense (Canada thistle) . Habitat: Prairies, weedy fields, meadows, roadsides, marshes. Range: All of Oregon . Season: Late February to mid-October Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Lustrous Copper butterfly. Gallery Prev Next Sand Cr, Klamath Co, June 25 - female Lustrous Copper Lycaena cupreus Size: 0.75- 1.25 inches wingspan Key ID features: Above bold orange with bold black spots and borders, female with more and larger spots. Below HW gray or creamy gray with large black spots and orange submarginal line, sometimes segmented. FW below light orange with large black spots and grayish outer margin. Similar species: Lustrous is deeper orange than other Oregon coppers with black spots above. Host plant: Dock (Rumex ) species are suspected. Habitat: Wet and dry meadows, open areas along streams. Range: South Cascade Mtns, Ochoco Mtns, Wallowa Mtns, Steens Mtn. Season: Late May to late-August Abundance: Locally common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Great Purple Hairstreak butterfly. Gallery Prev Next Kelley Cr, Warner Mtns, Lake Co, July 4 Great Purple Hairstreak Atlides halesus AKA Great Blue Hairstreak Size: 1.25 - 1.5 inches wingspan Key ID features: Above bright iridescent blue with black borders. Below black with iridescent blue band adjacent to long tails, red patches next to body and on sides of thorax. Similar species: No similar species in Oregon. Host plant: Oak mistletoe (Phoradendron leucarpum ). Habitat: Oak savanna, with mistletoe. Range: Warner Mtns, Siskiyou Mts, Willamette Valley. Season: Early April to early October Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Coronis Fritillary butterfly. Gallery Prev Next Hand Lake, Lane Co, August 4 Coronis Fritillary Argynnis coronis AKA Speyeria coronis Size: Up to 3 inch wingspan Key ID features: Orange above with thin black veins, black shading near the body, black irregular lines inwardly, submarginal black spot band and black marking along margin like chain links, bolder on female. Below light tan-brown "disc" on HW with large silvery-white oval spots and warm tan submarginal band. Similar species: Callippe Fritillary is smaller, with silver spots showing through above more boldly. Host plant: Violet (Viola ) species, varying by region of state . Habitat: Open meadows, openings in oak-pine forest, lower slopes of mountains in eastern Oregon. Range: Cascade Range, Siskiyou Mtns, all of eastern Oregon except Gilliam, Morrow, Umatilla and Wallowa counties. Season: Early May to early October. Abundance: Common Conservation Status: Secure .

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Sachem butterfly. Gallery Prev Next Boardman, Morrow County, August 24 - male Sachem Atalopedes campestris Size: Up to 1.5 inch wingspan Key ID features: Larger and longer winged than other comparable Oregon skippers. Above orangish-brown, with dark brown borders. Male with large rectangular black patch around stigmata and vague light orange pattern on HW. Female above with dark patch on FW, with pale yellow spot band beyond that, and HW with light orange spot band. Male HW below with broad light yellowish patches sometimes nearly enclosing a darker rectangular patch . Female below, with darker HW ground color and curved band of smaller, more distinct spots. Similar species: Yuma Skipper and Juba Skipper are of similar size. Yuma Skipper is plain above and below. Juba Skipper has green gray ground color below with bold white spot bands. Host plant: Various grass species. Habitat: Pastures, gardens, roadsides and open prairie. Range: Cascade Range, Siskiyou Mtns, Willamette Valley, Columbia and Deschutes river drainages. Season: Late May to late August Abundance: Uncommon Conservation Status: Secure