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 Propertius Duskywing butterfly. Gallery Prev Next W Boundary Rd, Lane Co, April 26 - female Propertius Duskywing Erynnis propertius Size: Up to 1.75 inch wingspan Key ID features: Our largest duskywing. Above, FW gray-brown with frosted bands and spots, 3-6 hyaline (glassy, translucent) spots on FW . FW often appears banded, especially in females. 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: Other duskywings are smaller, and generally less boldy marked. Host plant: Oak species, especially Oregon White Oak (Quercus garryana ), and golden chinkapin (Chrysolepis chrysophylla ) at higher elevations. Habitat: Open areas near oaks or chinkapin. Range: Western Oregon from Cascade Crest to crest of Coast Range. Season: Late March to mid-July Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Red Admiral butterfly. Gallery Prev Next Sand Cr, Klamath Co, June 25 Red Admiral Vanessa atalanta AKA Red Admirable Size: Up to 2.5 inch wingspan Key ID features: Unmistakable. Above black with red-orange band across FW, and white bar and spots near FW tip. HW above black with orange-red marginal band with small black spots and two black ringed blue spots at the anal angle. HW below a mosaic of brown, gray and black, with a thin paleblue submarginal line. FW below bold pinkish orange band as above, below band mostly black, above band black with white bar and spots and blue ring, wingtip mottled grays and browns with small spots. Similar species: Unlike any other species. Hostplant: Stinging nettle (Urtica dioica ) . Habitat: May be found in any habitat. Range: Throughout Oregon . Season: Any time of year, but mostly May to October. Abundance: Uncommon 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 Mustard White butterfly. Gallery Prev Next Plunkett Cr, Benton Co, July 31 Mustard White Pieris marginalis AKA Margined White Size: 1.25 - 1.5 inches wingspan Key ID features: Above milky-white, with black shading basally (near the thorax). Below, hindwing veins faintly lined with brownish black bands, bolder in spring. Summer brood males usually nearly pure white. Similar species: Cabbage White has black spot in center of FW. Host plant: Cresses, toothworts and other mustard species. Habitat: Openings in moist forests, usually coniferous. Range: Throughout western Oregon west of the Cascades, and in Ochoco, Wallowa Blue, and Warner Mtns. Season: Late March to early October Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Lorquin's Admiral butterfly. Gallery Prev Next Buford Park, Lane Co, June 16 Lorquin's Admiral Limenitis lorquini Size: Up to 3 inch wingspan Key ID features: Above black with broad white band through FW and HW, prominent orange patches at wingtips. Below bands of red-brown, white and black crossed by black veins. Similar species: Superficially similar to Weidemeyer's Admiral, which lacks orange wingtips. California Sister is dark brown above, and orange patches on FW are separated from wing tip. Host plant: Oceanspray (Holodiscus discolor ), willow species (Salix ), rose family shrubs and others . Habitat: Can appear in any habitat that contains one of its host plants. Range: Throughout Oregon. Season: Mid-February to early October. Abundance: Abundant Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Sheridan's Hairstreak butterfly. Gallery Prev Next Wolf Mtn, Lane Co, June 22 Sheridan's Hairstreak Callophrys sheridanii AKA Sheridan's Green Hairstreak Size: 0.8 - 1.0 inches wingspan Key ID features: Above both sexes light gray or brown. Below dark green when fresh, with black scaling, lighter green with gray when worn. Below, HW post median white band variable, sometimes bold. Below, FW mostly green. Often perches directly on the ground. Similar species: Bramble and Western Green primarily perch on shrubs or host plant. Bramble HS is usually found in more moist habitats, whereas Sheridan's is usually found in hotter, drier, well-drained sites. Host plant: Many buckwheat species (Eriogonum ), including Eriogonum umbellatum. Habitat: Washes, canyons, draws, high rocky-chutes, alpine swales. Range: Southern Cascades, Siskiyou Mtns, Warner Mtns, Steens Mtn, Ochoco Mtns, Blue Mtns, north central Oregon. Season: Early March to early August Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Pale Crescent butterfly. Gallery Prev Next Gert Canyon, Wasco Co, May 4, male Pale Crescent Phyciodes pallida Size: Up to 2 inch wingspan Key ID features: Above, orange patches and bands separated by black, much lighter in males. FW fringes checked, HW fringes white. HW above with submarginal band of small black dots circled with orange. Males especially have squarish black bar at middle of FW trailing edge above . Below white, tan and brown bands and patches. Similar species: Pale Crescent is larger than Field or Mylitta. Mylitta lacks squarish black bar at trailing edge of FW above. Host plant: Thistles including Cirsium undulatum . Habitat: Dry foothill gullies, streamsides and canyons. Range: Lower Deschutes River basin, Snake River basin . Season: Mid-April to early August Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Sagebrush Checkerspot butterfly. Gallery Prev Next Big Indian Gorge, Harney Co, June 20 - male Sagebrush Checkerspot Chlosyne acastus Size: Up to 1.75 inch wingspan Key ID features: Male above, bands of pale orange and yellow-orange, separated by black lines, crescents and checks . Basal 1/3 of HW above sometimes black with little orange. Male often lighter than female above. Below bands of chalk-white and brick red with black veins and edges. More white below than other similar species. Similar species: Northern Checkerspot darker above, and with off-white rather than white below. Host plant: Several species including green rabbitbrush (Chrysothamnus viscidiflorus ), gray rabbitbrush (Ericameria nauseosa ), desert yellow fleabane (Erigeron linearis ) and asters in the genus Dieteria . Habitat: Sage desert, pinyon-juniper savanna, washes, gulches, canyons and brushy flats. Range: Mostly below 5000 feet in SE Oregon deserts, and below 3000 feet in Columbia and Snake r iver basins . Season: Late April to late June Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for Great Basin Wood Nymph. Gallery Prev Next Picture Rock Pass, Lake Co, Aug 5 Great Basin Woodnymph Cercyonis sthenele Size: Up to 2 inch wingspan Key ID features: Above, brown or gray-brown with two eye spots on FW, lower eye slightly smaller, otherwise plain. Below, silvery striated brown with one to several small eyespots on HW, two large eyespots on FW (lower one smaller as above), but nearly equidistant from FW margin. Dark median line below lobed, but smoother than in Small Wood Nymph. Similar species: Small Wood Nymph is smaller, and HW median line below is more erratically jagged. Host plant: Undetermined grass species . Habitat: Sage-steppe, bunchgrass prairie, pinyon-juniper stands, ponderosa pine lands, oak-lined canyons. Range: Eastern Oregon, Siskiyou Mtns, Cascade Range from Lane County south. Season: Late June to late September Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Uncas Skipper butterfly. Gallery Prev Next Millican Flats, Deschutes Co, June 24 Uncas Skipper Hesperia uncas Size: Up to 1.4 inch wingspan Key ID features: Above, male brownish orange darker wingtips with light orange spots. Above female brown with jagged row of light orange spots. Below dark greenish gray with lighter veins, and disjointed white bands joined by thin vein lines. Similar species: Sandhill Skipper has light veins below but they are tan or yellowish. Nevada Skipper lacks light veins, and has the lowest segment of the outer spot band strongly offset on HW below. Host plant: Grass species. Indian ricegrass (Achnatherum hymenoides ) is suspected in Oregon. Habitat: Sage-steppe, hot dry plains, alkali basins, arid canyons. Range: Far southeast corner of Harney and Malheur counties, alkali and sage flats in southern Crook and northern Jefferson counties. Season: Late May to late June Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Snowberry Checkerspot butterfly. Gallery Prev Next Rd 23 Meadows, Lane Co, July 8 Snowberry Checkerspot Euphydryas colon Size: Up to 2.25 inch wingspan Key ID features: Quite variable. Above black with red and ivory spots, marginal band of red spots, sometimes absent on HW. On HW above submarginal row of small ivory spots. On HW below bands of ivory and red spots edged in black, crossed by black veins. Pattern of bands (starting at margin) is red-white-red-white -white. Similar species: Edith's checkerspot has red-white-red-red -white band pattern on HW below (starting at margin). Chalcedona Checkerspot has larger and paler ivory spots in submarginal row on HW above. Host plant: Snowberry species (Symphoricarpos ), including S. albus , and members of the figwort family, including penstemons, paintbrushes, and honeysuckle . Habitat: Mountain meadows, riparian areas, open woodlands, roadsides. Range: Cascade Range, Siskiyou Mtns, Warner Mtns, Ochoco Mtns, Blue Mtns . Season: Late April to late August Abundance: Common Conservation Status: Secure