Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Anna's Blue butterfly. Gallery Prev Next Crescent Mtn, Linn Co, August 8 - male (L), female (R) Anna's Blue Plebejus anna Size: 1.0 - 1.25 inch wingspan Key ID features: Male shiny violet-blue above with black marginal band and white fringe. Female brown above with scalloped orange marginal band, clearer and bolder on HW. Below, light bluish gray with tiny black spots, with row of orange checks, bordered inwardly with black and a small, light patch of iridescent blue, lighter and less clear (or absent) on FW. Similar species: Male Acmon and Lupine Blues have orange band on HW above, and females of those species have no orange on FW above. Melissa Blue has much brighter orange borders and bolder iridescent patches on HW below. Northern Blues not found in Cascades. Host plant: Legumes, especially lupines and lotuses . Habitat: Moist, cool montane meadows and forest openings, and dry meadows among conifers, usually above 3000 ft. Range: Found in Cascade Range, Siskiyou Mtns, Klamath Mtns and Warner Mtns. Season: Early June to mid-October Abundance: Common Conservation Status: Secure

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 back bands. 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 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 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

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

Here you will find information about how to contact Neil Bjorklund, creator of Butterflies of Oregon. GET IN TOUCH I'd love to hear from you! Please send me a message via the form below or just use the email address butterfliesoforegon at gmail.com. Thanks for submitting! Submit Subscribe Now Stay Up-To-Date with New Blog Posts

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Indra Swallowtail butterfly. Gallery Prev Next Illinois River Rd, Josephine Co, April 24 Indra Swallowtail Papilio indra Size: 2.25 - 2.5 inches wingspan Key ID features: Upperside mostly black with narrow band of yellow on forewing, stubby tails, blue patches on black band near hindwing margin. Underside almost identical to upper side, with paler black. Similar species: Anise Swallowtail has much less black on forewing and longer tails. Host plant: Wild members of the parsley family. Habitat: Dry canyons, riverbanks and roadsides, hilltops, rocky desert washes. Range: Blue Mtns, northern portion of Cascade Mtns on east side, Steens Mtn, and Klamath Mtns. Season: Late March - mid-August Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Arctic Skipper. Gallery Prev Next Lookout Cr Rd, Lane Co, May 26 Arctic Skipper Carterocephalus skada Size: Up to 1 inch wingspan Key ID features: Small and boldly marked . Above dark brown with many light orange patches on both wings. Below FW light orange with brown patches, HW darker orange with white or pale yellow spots with dark rims. Similar species: No other similar species (small skipper with orange spots on brown wings) in Oregon. Host plant: Grass species. Habitat: Forest openings, grassy meadows, streambanks, riparian areas--usually near water. Range: NE Blue Mtns, Wallowa Mtns, Cascade Range, northern Coast Range, and isolated Coast Range populations in Coos and Benton counties. 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 Lindsey's Skipper butterfly. Gallery Prev Next Kinney Cr Rd, Jackson Co, May 28 Lindsey's Skipper Hesperia lindseyi Size: Up to 1.25 inch wingspan Key ID features: Above, bright orange. Female relatively unmarked, male with vague dark borders, narrow stigmata on FW. Below greenish tan with disjointed white (female) or yellowish (male) spot bands--spots angular, veins lined with pale (not bright) scales. Similar species: Sandhill Skipper smaller, with larger light areas below. Uncas Skipper range does not overlap. Host plant: Lupines, grasses, oaks. Habitat: Oak woodland and dry shrubby habitats with grasses. Range: Jackson County and Josephine counties, southern Klamath County, Warner Mtns. Season: Early June to mid-July 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

Directory with photos and links for all of Oregon's brushfoot family butterflies. Brushfoot Butterflies Click photo for more details Monarch Monarch Danaus plexippus Zerene Fritillary Argynnis zerene Mormon Fritillary Argynnis mormonia American Lady Vanessa virginiensis Compton Tortoiseshell Nymphalis l-album Hoary Comma Polygonia gracilis Chalcedona Checkerspot Euphydryas chalcedona Sagebrush Checkerspot Chlosyne acastus Northern Crescent Phyciodes cocyta Sylvan Wood Nymph Cercyonis silvestris Silver-bordered Fritillary Boloria selene Callippe Fritillary Argynnis callippe Viceroy Viceroy Limenitis archippus Painted Lady Vanessa cardui California Tortoiseshell Nymphalis californica Green Comma Polygonia faunus Snowberry Checkerspot Euphydryas colon Northern Checkerspot Chlosyne palla Field Crescent Phyciodes pulchella Small Wood Nymph Cercyonis oetus Pacific Fritillary Boloria epithore Great Basin Fritillary Argynnis egleis Weidemeyer's Admiral Limenitis weidemeyerii West Coast Lady Vanessa annabella Mourning Cloak Nymphalis antiopa Gray Buckeye Junonia grisea Anicia Checkerspot Euphydryas anicia California Crescent Phyciodes orseis Common Ringlet Coenonympha california Common Alpine Erebia epipsodea Great Spangled Fritillary Argynnis cybele Northwestern Fritillary Argynnis hesperis Lorquin's Admiral Limenitis lorquini Red Admiral Vanessa atalanta Satyr Comma Polygonia satyrus Gillett's Checkerspot Euphydryas gillettii Leanira Checkerspot Chlosyne leanira Pale Crescent Phyciodes pallida Common Wood Nymph Cercyonis pegala Riding's Satyr Neominois ridingsii Coronis Fritillary Argynnis coronis Hydaspe Fritillary Argynnis hydaspe California Sister Adelpha californica Milbert's Tortoiseshell Aglais milberti Oreas Comma Polygonia oreas Edith's Checkerspot Euphydryas editha Hoffmann's Checkerspot Chlosyne hoffmanni Mylitta Crescent Phyciodes mylitta Great Basin Wood Nymph Cercyonis sthenele Great Arctic Oeneis nevadensis

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