Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Anicia Checkerspot butterfly. Gallery Prev Next Arizona Cr, Pueblo Mtns, Harney Co, June 2 Anicia Checkerspot Euphydryas anicia Size: Up to 2.25 inch wingspan Key ID features: Highly variable. Above black with red and white spot bands, marginal band of red spots. Below bands of white and red spots edged thinly in black, crossed by black veins. sometimes more white than red, marginal band is red, fringes checked. On hindwing below (starting at margin) pattern of bands is usually 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 ivory spots above instead of white, and is larger. Snowberry Checkerspot is typically blacker above, with rounder wing shape. Host plant: Members of the figwort family, including penstemons and paintbrushes . Habitat: Sage-steppe, arid high grasslands, canyons. Range: In high desert east of the Cascade Range, from Warner Mtns to Steens Mtn up to broad swath along Deschutes River. Also in highlands west of the Snake River . Season: Mid-March to mid-August Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the West Coast Lady butterfly. Gallery Prev Next Wolf Mtn Rd, Lane Co, September 10 West Coast Lady Vanessa annabella Size: Up to 2 inch wingspan Key ID features: Smaller than other ladies. Above bright orange with black FW tips with a thick vertical orange bar at the leading edge and a few small white spots near the wing tip. HW above orange with submarginal row of black spots with blue centers. Below, HW brown with submarginal row of four small eye spots, and web of white lines and white patches. FW below has bright salmon orange crossed by black in lower 2/3, upper 1/3 similar to HW. Similar species: American Lady has two large eye spots below. Painted Lady is larger, has white bar at leading edge of FW above instead of orange. Hostplant: Many species in the mallow family including streambank globe-mallow, checkermallow and others . Habitat: Flowery meadows, roadsides, and gardens. Range: Throughout Oregon except in Malheur County . Season: E arly March to mid-November. Abundance: Uncommon Conservation Status: Secure

Here you will find the most valuable field guides and printed information sources for butterflies in Oregon and Lane County. Resources: Books New All-Color 5th Edition Finding Lane County Butterflies The new 5th Edition is a significant overhaul of the original book, with 5 new important sites added, 45 new color photos, 10 new color maps, and hundreds of clarifications and improvements throughout. It now includes 30 of the best sites for butterflies in Lane County (and a few just over the line in Linn County). For each site, it describes when to go, how to get there, and which species you are likely to find there. Using this guide, you can, with some luck, find most of Lane County's more than 100 species. Order yours now from the Lane County Butterfly Club. 100% of sales proceeds benefit the Lane County Butterfly Club. Butterflies of Oregon: An Atlas Honoring John Hinchliff by Jeffrey C. Miller, Paul C. Hammond, Dana N.R. Ross and Neil H. Bjorklund This 2-volume set raises the standard for presenting the current state of our knowledge about Oregon's butterfly species and subspecies and where they are found in our state. Volume 1 (Species Distribution) 218 pages 8.5" x 11", 177 maps, 354 color photos Contains full color distribution maps for each species, and each subspecies. Volume 2 (Synthesis) 290 pages 8.5" x 11", 45 full color maps,108 color photos A virtual road tour for exploring Oregon butterflies Discussion of relationship between butterflies and Oregon's environments Exploration of site record counts, and where they do and don't occur Discussion of patterns in butterfly distribution Discussion of caterpillar foodplant relationships Two volume set $95 plus shipping. To order, send an email to: oregonbutterflyatlas2026@gmail.com Anchor Atlas Butterflies of Lane County When it was first released in 2002, this pocket-sized field ID guide to the butterflies of Lane County, Oregon was the first of its kind. Other similar "pocket guides" have appeared around the country as publishers realize that people don't want to carry around a 5-pound book in the field. This guide will be replaced by an all new field identification guide that covers all of the Willamette Valley and adjoining foothills-planned to be released in 2026. Sold through the Lane County Butterfly Club. Proceeds from sales benefit the Lane County Butterfly Club. Available from Lane County Butterfly Club . This is the definitive guide for identifying the butterflies of Oregon and Washington. It's chock-full of information about each species, with maps, history, biological information and more. It won't fit in your pocket, but you'll want a copy for reference anyway. Available from Amazon.com . Butterflies of the Pacific Northwest By Robert Michael Pyle and Caitlin LaBar. This is the latest and most comprehensive guide for identifying the butterflies of Oregon and Washington. It's chock-full of information about each species, with maps, history, biological information and more. It won't fit in your pocket, but you'll definitely want a copy anyway. Available from Amazon.com . Butterflies of the Pacific Northwest This is the definitive guide for identifying the butterflies of Oregon and Washington. It's chock-full of information about each species, with maps, history, biological information and more. It won't fit in your pocket, but you'll want a copy for reference anyway. Available from Amazon.com . Butterflies of Oregon Their Taxonomy, Distribution, and Biology By Andrew Warren. This thorough scientific work provides the most in-depth coverage of Oregon's butterfly species and set the groundwork for taxonomy studies and books that followed it. For a deeper dive into Oregon's butterflies, this is your "go to" source. Available from Amazon.com . Warren Book Pocket Guide to the Butterflies of Washington, 3rd ed By Caitlin LaBar. This is a great field guide for identifying the butterflies of Washington. So small and light there's no reason not to take it into the field with you! Available from Amazon.com .

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Rural Skipper butterfly. Gallery Prev Next Grave Creek Bridge, Josephine Co, June 29 Rural Skipper Ochlodes agricola Size: Up to 1 inch wingspan Key ID features: Above, small, tan-orange with graduated dark border . Male with black stigmata on FW, female with black patch in same location. HW below plain orange-tan in male, plain purplish brown in female which has vague lighter patches. Similar species: Unmarked orange-tan HW below on male distinct within its range. Host plant: Various grass species. Habitat: Forest edges and openings, riparian areas. Range: Josephine, Curry and Coos counties, small area along CA border at Jackson County/Josephine County border. Season: Late May to late July Abundance: Locally common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Two-banded Checkered Skipper. Gallery Prev Next W Boundary Rd, Lane Co, April 12 Two-banded Checkered Skipper Pyrgus ruralis Size: Up to 1 inch wingspan Key ID features: Above, Above very dark brown, with gray shading basally on FW, boldly checked fringes and bright white patches . White spots on FW in two rows that can look like an "x" to some. HW has bold spot bands, and a lone small white spot near the wing base (often covered). Below bands of brown, white and olive-gray on HW. Similar species: Common Checkered Skipper is much lighter above and below, with more and longer white patches above. Host plant: Checkermallows ( Sidalcea ) and wildflowers in the rose family like cinquefoil ( Potentilla ) and strawberry ( Fragaria ). Habitat: Mountain meadows and roadsides. Range: Cascade Range, Willamette Valley, Coast Range, Ochoco Mtns, Blue Mtns, Wallowa Mtns, Siskiyou Mtns, Klamath Mtns. Season: Early March to early September Abundance: Common Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Purplish Copper butterfly. Gallery Prev Next King Mountain Rd, Harney Co, June 13 - male Purplish Copper Tharsalea helloides AKA Lycaena helloides Size: 1 - 1.25 inches wingspan Key ID features: Male above brownish with purple iridescence when fresh. Female above light orange with black spots and wide brown borders. Male and female HW below lavender with submarginal orange zigzag line (females darker); FW below with black spots. Similar species: Lilac-bordered has distinctive two-toned HW below. Other coppers have white or grayish undersides. Host plant: Docks (Rumex ) and Knotweeds (Polygonum). Habitat: Wide variety of habitats . Range: All of Oregon. Season: Late April to mid-October 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 Sara Orangetip butterfly. Gallery Prev Next Little Groundhog Mtn, Lane Co, July 8 - male Julia's Orangetip Anthocharis julia AKA Julia Orangetip Size: 1.25 - 1.5 inches wingspan Key ID features: Male white above, with bold orange FW tip. Female pale yellow-green above with smaller orange patch near FW tip. Below patchy marbling with light yellow veins. Similar species: Sara's Orangetip, which occurs only along the California border is very similar and difficult to distinguish in the field where they overlap. The two species are distinguished by several characteristics, including larval characteristics, number of overwintering cycles, and shape and color of the chrysalis. Host plant: Crucifers including several rockcresses. Habitat: Wide variety of open habitats. Range: Found throughout Oregon. Season: Mid-March to mid-August Abundance: Common Conservation Status: Secure

This page acknowledges the many people who have contributed to the Butterflies of Oregon project over the years, and how they contributed. Acknowledgments So many people to thank, so little time... First, I want to thank my Dad, the late Norm Bjorklund, who instilled in me a love of nature, and who took me out to see and catch my first Oregon butterflies. Thanks to Eric Wold for helping to re-kindle my love of butterflies back in 2001, and for our joint (and fun!) project of starting the Eugene-Springfield Chapter of the North American Butterfly Association (NABA-ES). Thanks to Paul Severns and Andy Warren, who have taught me a great deal about the distribution, phenology, taxonomy, and ecology of butterflies. They introduced me to many of the sites where I took these photos. Many thanks also to Paul Hammond, Gary Pearson, Sue Anderson, Dan Thackaberry, Bill Neill, Dave McCorkle, Bob Pyle, Vern Covlin, Harold Rice, Eric Runquist, Bruce Newhouse, Dana Ross, Lori Humphreys, Dennis Deck, Rob Santry, Tanya Harvey, and Greg Sigrist, all of whom shared very helpful information on butterfly sites I wasn't familiar with. Their information led to new photos of many Oregon species! Without Andy Warren's essential text "Butterflies of Oregon, Their Taxonomy, Distribution and Biology," I would not have been able to make it this far. Andy's book and his detailed emails with descriptions of where to find many of these butterflies in Oregon have made my endeavor so much easier! Bob Pyle and Caitlin LaBar's excellent field guide Butterflies of the Pacific Northwest (2018) has also been a godsend, with its updated taxonomy, species descriptions and range maps. Andy Warren, Bob Pyle, Jonathon Pelham, Ernst Dornfeld, and John Hinchliff are the giants on whose shoulders this work stands. They each wrote key works on butterflies in the Northwest, and without the foundation of their work, I wouldn't know enough to even get started. Thanks also to Jonathon Pelham and Caitlin LaBar for sharing their great work compiling known county occurrences of butterfly species in Oregon into a single document. They helped me identify some new county records with their effort! Thank you to Paul Hammond at the Oregon State Arthropod Collection (OSAC) for repeatedly helping me with identifications and setting up specimens for photos. A huge thanks to Dana Ross for spending hours helping me get photos of pinned specimens for all the described Oregon species that I haven't photographed live in the field, and for reviewing my photos of some of the tough to ID species--I really appreciate your support! The website www.butterfliesofamerica.com has also been a great help in this endeavor, and I appreciate the BOA team of authors for all their work on that website. Thank you to Pollyanna Lind and Todd Simmler for inspiring me with a snowstorm of great ideas on how I could share my Oregon butterfly photos and put them to good use. And likewise thank you Adam Klein, at New Ventures West in SF for giving me the coaching assignment of sharing my photography with others. Check! A tip of my hat is in order to Lindsay Selser, for her surprisingly motivating question "so where can we see the photos of all the butterflies you've already photographed?" To all these, and any others I may have forgotten, a hearty and deeply-felt thank you! That's me on Dad's lap, up on Mt. Hood, c 1959.

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Juba Skipper butterfly. Gallery Prev Next Rd 23, Lane Co, June 16 Juba Skipper Hesperia juba Size: Up to 1.5 inch wingspan Key ID features: Above, male brownish orange with jagged line of light orange spots, dark brown edges, like teeth pointing inward, dark stigmata. Above female brown with jagged row of light orange spots, some almost white spots near wing tip, also with dark brown edges, like teeth pointing inward . Below greenish gray with disjointed white bands, lowest patch of white on outer band displaced inwardly (but not as strongly as Nevada Skipper). Similar species: On HW below Nevada Skipper has the lowest segment of the outer white spot band more strongly offset. Host plant: Bunchgrass species. Habitat: Sage habitats, roadsides, dry woodland openings. Range: All of Oregon except north Coast Range and coast. Season: Mid-April to early October Abundance: Uncommon Conservation Status: Secure

Photos, flight season, distribution and host plant information, conservation status, and identification tips for the Pacific Dotted Blue butterfly. Gallery Prev Next Frisselll Ridge, Lane Co, July 16 - male (L), female (R) Dotted Blue Euphilotes enoptes AKA Pacific Dotted Blue Size: Up to 0.85 inch wingspan Key ID features: Small. Male blue above with dark wing borders. Female dark brown above with vague orange zigzag along trailing margin. Both sexes have checked fringe on FW. Below bluish-gray with black spots, and orange edges to submarginal black spots on HW. Similar species: Euphilotes blues are often best told apart by host-plant association, location and flight period. Several other species have orange bands on the ventral hindwing, instead of separate orange spots. In the western Cascades, only this species has separate orange spots. Host plant: Eriogonum nudum (bare-stem buckwheat), E. elatum (tall woolly buckwheat) and E. compositum (arrowleaf buckwheat). Habitat: Well-drained sites where hostplant grows, including high plateaus, ridges, gravelly slopes and roadsides. Range: Western Cascade Range, Siskiyou Mtns, Klamath Mtns . 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 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