BUTTERFLY LARVAL HOST PLANTS English Name Latin Name______
Clodius Parnassian Parnassius clodius Pacific Bleedingheart (Dicentra formosa); likely Steer's Head (Dicentra uniflora) in some areas;
Mountain Parnassian Parnassius smintheus Lanceleaved Stonecrop (Sedum lanceolatum); Western Roseroot (Sedum rosea); Spreading Stonecrop (Sedum divergens); Oregon Stonecrop (Sedum oreganum); Wormleaf Stonecrop (Sedum stenopedalum);
Anise Swallowtail Papilio zelicaon Parsley Family (Umbelliferae); Desert Parsley (Lomatium); Cow Parsnip (Heracleum lanatum); Seacoast Angelica (Angelica lucida); other Angelicas; Anise or Fennel (Foeniculum vulgare); Licorice; Caraway (Carum carvi); Carrot; Wild Parsnip (Pastinaca satira); Turpentine Cymopterus (Cymopterus terebinthinus); Fern-leaf Desert Parsley (Lomatium dissectum); Grays Desert Parsley (Lomatium grayi);
West. Tiger Swallowtail Papilio rutulus Willow, glabrous-leaved species only (Salix); Hooker Willow (Salix hookeriana); Scouler Willow (Salix scouleriana); Poplar & Aspen (Populus); Red Alder (Alnus rubra); Birch (Betula); Bigleaf Maple (Acer); Cherry & Plum (Prunus sp.); Chokecherry (Prunus virginiana); Apple (Pyrus); Mountain Ash (Sorbis);
Canadian Tiger Swallow. Papilio canadensis Willow (Salix); Poplar, Aspen & Cottonwood (Populus); Alder (Alnus); Birch (Betula);
Two-tailed Swallowtail Papilio multicaudatus Chokecherry (Prunus virginiana); Ash (Fraxinus); Wild Cherry (Prunus); Serviceberry (Amelanchier alnifolia); Strawberry (Fragaria); Wild Plum (Prunus); Cultivated Hops (Ptelea trifoliata);
Pale Swallowtail Papilio eurymedon Mountain Balm (Ceanothus velutinus); Cherry & Plum (Prunus); Hawthorn (Crataegus); Cascara; Currant (Ribes); Red Alder (Alnus rubra); Ocean Spray (Holodiscus discolor); Buckthorn (Rhamnus); Birch (Betula); Serviceberry (Amelanchier alnifolia); Red-stem Ceanothus (Ceanothus sanguineus); Bittercherry (Prunus emarginata);
Pine White Neophasia menapia White Pine (Pinus monticola); Yellow Pine (Pinus ponderosa); Douglas Fir (Pseudotsuga menziesii); Balsam Fir (Abies grandis); Lodgepole Pine (Pinus contorta); Western Hemlock (Tsuga heterophylla);
Becker's White Pontia beckerii Cruicfers, especially Rockcress (Arabis); Black Mustard (Brassica nigra); Hedge Mustard (Sisymbrium officinale); Golden Prince's Plume (Stanleya pinnata); Thelypody (Thelypodium);
Spring White Pontia sisymbrii Rock Cress (Arabis); Tower mustard (Arabis glabra); Forkhaired Rockcress (Arabis furcata); Holboell's Rockcress (Arabis holboellii); Jim Hill Mustard (Sisymbrium altissimum); Hedge Mustard (Sisymbrium officinale); Heart-leaved Streptanthus (Streptanthus cordatus);
Checkered White Pontia protodice Mustards (Brassica); Rock Cress (Arabis); Bladder-pod (Lesquerella); Beeplant (Cleome); Peppergrass (Lepidium); Tansy-mustard (Descurainia); Tumble-mustard (Sisymbrium); Labrador Tea (Ledum);
Western White Pontia occidentalis Uncultivated members of Mustard Family (Cruifers); Beeplant (Cleome); Mustards (Brassica); Thelypody (Thelypodium);
Margined White Pieris marginalis Mustard Family (Crucifers); Cresses (Thlaspi, Arabis, Barbarea); Bittercress (Cardamine); Watercress (Rorippa nasturtium-aquaticum); Rock Cress (Arabis);
Cabbage White Pieris rapae Many Mustards (Brassica); Nasturtium; Radish; Bee-plant (Cleome); Cole vegetables (cabbage, cauliflower, broccoli); Page 2 of 8 BUTTERFLY LARVAL HOST PLANTS English Name Latin Name______
Large Marble Euchloe ausonides Rock Cress (Arabis); Winter Cress (Barbarea); Mountain Tansy-mustard (Descurainia richardsonii); Hedge Mustard (Sisymbrium officinale); Wall Flower (Erysimum); Peppergrass (Lepidium) on San Juan Island;
Sara Orangetip Anthocharis sara Rock Cress (Arabis) incl. Tower Mustard (Arabis glabra); Drummond's Rockcress (Arabis drummondii); Winter Cress (Barbarea); Sand Fringepod (Thysanocarpus curvipes); Tansy-mustard (Descurainia); Hedge Mustard (Sisymbrium officionale); other mustards (Crucifers);
Clouded Sulphur Colias philodice Alfalfa (Medicago sativa); White Clover (Trifolium repens); Red Clover (Trifolium pratense); Vetch (Vicia); Locoweed (Astragalus); aff. Crouching Locoweed (Astragalus aff. Succumbens); Wild Sweet Pea (Lathyrus); Sweet Clover (Melilotus); Sweetvetch (Hedysarum); Lupine (Lupinus); Golden-banner (Thermopsis);
Orange Sulphur Colias eurytheme Alfalfa (Medicago sativa); White Clover (Trifolium repens); White Sweet- clover (Melilotus alba); Milk-vetch (Astragalus); Red Clover (Trifolium pratense); Lupines (Lupinus); Vetch (Vicia); other legumes;
Queen Alexandra Sulphur Colias alexandra Threadleaf Milkvetch (Astragalus filipes); Canada Milkvetch (Astragalus canadensis); Weedy Milkvetch (Astragalus miser); Woollypod Milkvetch (Astragalus purshii); Freckled Milkvetch (Astragalus lentiginosus); Locoweed (Oxytropis); Mountain Thermopsis (Thermopsis montana); Wild Pea (Lathyrus); Sweet Vetch (Hedysarum); Lupine (Lupinus);
Pink-edged Sulphur Colias interior Dwarf Bilbery (Vaccinium myrtillus & Vaccinium caespitosum); Bog Bilberry (Vaccinium uliginosum);
Lustrous Copper Lycaena cuprea Docks, including Alpine Sorrel (Rumex pauciflorus); Mountain Sorrel (Oxyria digyna);
Blue Copper Lycaena heteronea Round-headed Desert Buckwheat (Eriogonum sphaerocephalum); Northern Buckwheat (Eriogonum compositum); Sulfur Flower (Eriogonum umbellatum); Barestem Buckwheat (Eriogonum nudum); Slenderbush Buckwheat (Eriogonum microthecum); Strict Buckwheat (Eriogonum strictum); Parsley Desert Buckwheat (Eriogonum heracleoides);
Purplish Copper Lycaena helloides Knotweed (Polygonum); Sheep Sorrel (Rumex acetosella); Cinquefoil (Potentilla); Dock (Rumex); probably Black Knotweed (Polygonum paronychia) on coast; Curly Dock (Rumex crispus); Water Smartweed (Polygonum amphibium);
Lilac-bordered Copper Lycaena nivalis Douglas's Knotweed (Polygonum douglasii); has been reared on Bitter Dock (Rumex obtusifolius);
Mariposa Copper Lycaena mariposa Dwarf Bilberry (Vaccinium caespitosum); Wild Cranberry (Vaccinium oxycoccos); Bog Blueberry (Vaccinium uligonosum); Bog-rosemary (Andromeda polifolia); Not Polygonum as reported in literature;
Coral Hairstreak Satyrium titus Chokecherry (Prunus virginiana); Wood's Rose (Rosa woodsii); Western Serviceberry (Amelanchier alnifolia); probably other Prunus sp.;
Behr's Hairstreak Satyrium behrii Bitterbrush (Purshia tridentata);
California Hairstreak Satyrium californica Bitterbrush (Purshia tridentata); Mountain Balm (Ceanothus velutinus); Mountain Mahogany (Cercocarpus); Oak (Quercus); maybe Chokecherry (Prunus virginiana);
Sylvan Hairstreak Satyrium sylvinum Coyote Willow (Salix exigua);
Hedgerow Hairstreak Satyrium saepium Mountain Balm (Ceanothus velutinus); Redstem Ceanothus (Ceanothus sanguineus);
Page 3 of 8 BUTTERFLY LARVAL HOST PLANTS English Name Latin Name______
Western Green Hairstreak Callophrys affinis Round-headed Desert Buckwheat (Eriogonum sphaerocephalum); reared on Tall Buckwheat (Eriogonum elatum);
Sheridan's Hairstreak Callophrys sheridanii Northern Buckwheat (Eriogonum compositum); Tall Buckwheat (Eriogonum elatum); probably other buckwheats;
Thicket Hairstreak Mitoura spinetorum Western Dwarf Mistletoe (Arceuthobium campylopodum) mostly on Yellow Pine (Pinus ponderosa); American Dwarf Mistletoe (Arceuthobium americanum);
Cedar Hairstreak Mitoura grynea Western Red Cedar (Thuja plicata) for ssp. rosnerae in western WA; Western Juniper (Juniperus occidentalis) and Rocky Mountain Juniper (Juniperus scopulorum) for ssp. barryi in eastern WA;
Brown Elfin Incisalia augustinus Salal (Gaultheria shallon); Mountain Balm (Ceanothus velutinus); Redstem Ceanothus (Ceanothus sanguineus); Blueberry (Vaccinium sp.); Kinnikinnick (Arctostaphylos uva-ursi); Pacific Madrone (Arbutus menziesii); Manzanita (Arctostaphylos); Dodder (Cuscuta); Apple (Pyrus); Bitterbrush (Purshia tridentata); probably Stonecrops (Sedum); Ocean Spray (Holodiscus discolor);
Moss's Elfin Incisalia mossii Lanceleaved Stonecrop (Sedum lanceolatum); Spatula-Leafed Stonecrop (Sedum spathulifolium); Spreading Stonecrop (Sedum divergens); Oregon Stonecrop (Sedum oregonum); King's Crown (Sedum rosea);
Hoary Elfin Incisalia polia Kinnikinnick (Arctostaphylos uva-ursi);
Western Pine Elfin Incisalia eryphon Ponderosa Pine (Pinus ponderosa); Lodgepole Pine (Pinus contorta);
Gray Hairstreak Strymon melinus Flowers of a wide variety of plants; Tall Buckwheat (Eriogonum elatum); Big Deervetch (Lotus crassifolius); Red Clover (Trifolium pratense); White Clover (Trifolium repens); Long-stalked Clover (Trifolium longipes); Rosaceous plants; Oak (Quercus); Cultivated corn; Strawberry (Fragaria); Hops (Humulus); Cultivated beans; Knotweed (Polygonum); Spreading Stonecrop (Sedum divergens); Lanceleaved Stonecrop (Sedum lanceolatum); Oregon Stonecrop (Sedum oregonum); King's Crown (Sedum rosea);
Eastern Tailed Blue Everes comyntas Various legumes; Wild Pea (Lathyrus); Rattlepod & Milk-vetches (Astragalus); Vetch (Vicia); Deer Vetch (Lotus); Birdsfoot Trefoil (Lotus corniculatus); Sweet-clover (Melilotus); Lupine (Lupinus); Red Clover (Trifolium pratense); White Clover (Trifolium repense);
Western Tailed Blue Everes amyntula Wild Pea (Lathyrus); Rattlepod (Astragalus); Vetch (Vicia); American Vetch (Vicia americana); English name uncertain (Lathyrus nevadensis);
Echo Blue Celastrina echo Red Osier Dogwood (Cornus stolonifera); Mountain Balm (Ceanothus velutinus); Oak (Quercus); Spiraea (Spiraea); Pacific Dogwood (Cornus nutalli); Manzanita; Blueberry (Vaccinium); Viburnum;
Lucia's Blue Celastrina lucia Dogwood (Cornus); Red Osier Dogwood (Cornus stolonifera);
Euphilotes enoptes complex
Dotted Blue Euphilotes enoptes s.s. Barestem Desert Buckwheat (Eriogonum nudum);
“Columbian Blue” Euphilotes columbiae (historically “Dotted Blue” in WA) Northern Buckwheat (Eriogonum compositum); Tall Buckwheat (Eriogonum elatum);
Euphilotes battoides complex
Euphilotes on heracleoides unnamed (historically “Square Spotted Blue” in WA) Parsley Desert Buckwheat (Eriogonum heracleoides); Douglas' Buckwheat (Eriogonum douglassi);
Page 4 of 8 BUTTERFLY LARVAL HOST PLANTS English Name Latin Name______
Euphilotes on umbellatum ?Euphilotes glaucon Sulphur Flower (Eriogonum umbellatum);
Euphilotes on ovalifolium ?Euphilotes baueri Oval-leafed Desert Buckwheat (Eriogonum ovalifolium);
Euphilotes on sphaerocephalum unnamed Round-headed Desert Buckwheat (Eriogonum sphaerocephalum);
Euphilotes on strictum unnamed Strict Buckwheat (Eriogonum strictum);
Arrowhead Blue Glaucopsyche piasus Silky Lupine (Lupinus sericeus); Spurred Lupine (Lupinus laxiflorus);
Silvery Blue Glaucopsyche lygdamus Legumes including Wild Pea (Lathyrus); Vetch (Vicia); Rattlepod (Astragalus); Silky Lupine (Lupinus sericeus); Prairie Lupine (Lupinus lepidus); Broadleaf Lupine (Lupinus latifolius); Sulphur Lupine (Lupinus sulphureus); Wyeth's Lupine (Lupinus wyethi, 4-17-04); Big Deervetch (Lotus crassifolius); Trefoil (Trifolium);
Northern Blue Plebejus idas Various Lupines (Lupinus); Silky Lupine (Lupinus sericeus); Deer Vetch (Lotus); Wild Pea (Lathyrus); Rattlepod (Astragalus); Crowberry (Empetrum); Laurel (Kalmia); Labrador Tea (Ledum);
Melissa Blue Plebejus melissa Woollypod Milk-Vetch (Astragalus purshii, 5-16-04); Bent Milk-Vetch (Astragalus inflexus); Freckled Milk-Vetch (Astragalus lentiginosus); Swainsona (Swainsona salsula); Crazyweed (Oxytropis); Deer Vetch (Lotus); Various Lupines (Lupinus); Silky Lupine (Lupinus sericeus); Alfalfa (Medicago sativa); American Licorice (Glycyrrhiza lepidota);
Greenish Blue Plebejus saepiolus Clovers (Trifolium); Long-Stalked Clover (Trifolium longipes); Springbank Clover (Trifolium wormskjoldii); Red Clover (Trifolium pratense); Bird's-foot Trefoil (Lotus corniculatus); Northern Hedysarum (Hedysarum boreale);
Boisduval's Blue Plebejus icarioides Broadleaf Lupine (Lupinus latifolius); Prairie Lupine (Lupinus lepidus - larva found 4-17-04); Spurred Lupine (Lupinus laxiflorus); Silky Lupine (Lupinus sericeus); Sulphur Lupine (Lupinus sulphureus); Additionally some 40 species of Lupine are recorded elsewhere; always hairier species preferred.
Lupine Blue Plebejus lupini Northern Buckwheat (Eriogonum compositum); probably Round-headed Desert Buckwheat (Eriogonum sphaerocephalum); (Note: does not use Lupine). In Oregon uses Eriogonum umbellatum, heracleoides, ovalifolium, caespitosum, chrysops, flavum & maybe strictum & douglasii);
Acmon Blue Plebejus acmon Barestem Buckwheat (Eriogonum nudum); Northern Buckwheat (Eriogonum compositum); Birdsfoot Trefoil (Lotus corniculatus); Asragalus sp.; possibly other legumes and Polygonum.
Arctic Blue Agriades glandon Spotted Saxifrage (Saxifraga bronchialis) now confirmed in WA; Shooting Star (Dodecatheon) in Calif.; Rock-Jasmine (Andrdosace septentionalis) in Colorado; maybe Primroses (Primula); Crazyweed (Oxytropis);
Morman Metalmark Apodemia mormo Tall Buckwheat, confirmed L5 (Eriogonum elatum); Round-headed Buckwheat, confirmed oviposition (Eriogonum sphaerocephalum); Northern Buckwheat (Eriogonum compositum - Spokane L3, 5-14-04); Snow Buckwheat (Eriogonum niveum);
Great Spangled Fritillary Speyeria cybele Stream Violet (Viola glabella); Blue Violet (Viola adunca); Nuttall's Violet (Viola nuttallii); Evergreen Violet (Viola sempervirens);
Zerene Fritillary Speyeria zerene Blue Violet (Viola adunca); Stream Violet (Viola glabella); Nuttall's Violet (Viola nuttallii);
Page 5 of 8 BUTTERFLY LARVAL HOST PLANTS English Name Latin Name______
Callippe Fritillary Speyeria callippe Nuttall's Violet (Viola nuttallii); Evergreen Violet (Viola sempervirens); other violets (Viola);
Great Basin Fritillary Speyeria egleis Nuttall's Violet (Viola nuttallii); Goosefoot Violet (Viola purpurea); Blue Violet (Viola adunca); other violets (Viola);
Northwestern Fritillary Speyeria hesperis Blue Violet (Viola adunca); Goosefoot Violet (Viola purpurea); Canadian Violet (Viola canadensis); Nuttall's Violet (Viola nuttallii); Evergreen Violet (Viola sempervirens);
?Atlantis Fritillary Speyeria ?atlantis (Provisionally included in Northwestern Fritillary above)
Hydaspe Fritillary Speyeria hydaspe Stream Violet (Viola glabella); Blue Violet (Viola adunca); Nuttall's Violet (Viola nuttallii); Evergreen Violet (Viola sempervirens);
Mormon Fritillary Speyeria mormonia Marsh Violet (Viola palustris); Blue Violet (Viola adunca); Nuttall's Violet (Viola nuttallii); Evergreen Violet (Viola sempervirens);
Silver-bordered Frit. Boloria selene Marsh Violet (Viola palustris); Northern Bog Violet (Viola nephrophylla); Stream Violet (Viola glabella);
Meadow Fritillary Boloria bellona Canada Violet (Viola canadensis);
West. Meadow Fritillary Boloria epithore Blue Violet (Viola adunca); Stream Violet (Viola glabella); Evergreen Violet (Viola sempervirens);
Astarte Fritillary Boloria astarte Spotted Saxifrage (Saxifraga bronchialis);
Northern Checkerspot Chlosyne palla Common Rabbit-brush (Chrysothamnus nauseous); Green Rabbit-brush (Chrysothamnus viscidiflorus); Showy Aster ("Aster conspicuus" = Eurybia conspicua); Western Meadow Aster ("Aster" = Symphyotrichum campestris); Western Mountain Aster ("Aster occidentalis" = Symphyotrichum spathulatum); Showy Fleabane (Erigeron speciosus); Goldenrod (Solidago);
Northern Crescent Phyciodes cocyta Alkali Aster (Aster frondosus); Philadelphia Fleabane (Erigeron philadelphicus); other asters (Aster, Machaeranthera);
Field Crescent Phyciodes pulchella Showy Aster ("Aster" = Eurybia conspicua); Cascades Aster ("Aster" = Eucephalus ledophyllus);
Pale Crescent Phyciodes pallida Wavy-leaved Thistle (Cirsium undulatum); other native Thistles (Cirsium);
Mylitta Crescent Phyciodes mylitta Canadian Thistle (Cirsium arvense); Bull Thistle (Cirsium vulgare); Wavy- leaved Thistle (Cirsium undulatum); Mountain Thistle (Cirsium callilepis); Edible Thistle (Cirsium edule); White Thistle (Cirsium hookerianum); Milk Thistle (Silybum marianum);
Anicia Checkerspot Euphydryas anicia Beardtongue (Penstemon); Indian Paintbrush (Castilleja); Plantain (Plantago); Borage (Boraginaceae); Fine-toothed Penstemon (Penstemon subserratus);
Chalcedon Checkerspot Euphydryas chalcedona Common Snowberry (Symphoricarpos albus); Mountain Snowberry (Symphoricarpos oreophilus); Snapdragon (Antirrhinum); Honeysuckle (Lonicera); Monkey-flower (Mimulus); Paintbrush; Fine-toothed Penstemon (Penstemon subserratus); Plantains including Common Plantain (Plantago major);
Edith's Checkerspot Euphydryas editha Common Plantain (Plantago major); Lousewort (Pedicularis); Beardtongue (Penstemon); Paintbrush (Castilleja); Owl-clover (Orthocarpos); Fine- toothed Penstemon (Penstemon subserratus); Small-flowered Blue-eyed Mary (Collinsia parviflora) in spring;
Satyr Comma Polygonia satyrus Stinging Nettle (Urtica dioica); Elm (Ulmus); Hops (Humulus lupulus); Page 6 of 8 BUTTERFLY LARVAL HOST PLANTS English Name Latin Name______
Green Comma Polygonia faunus Willow (Salix); Sitka Willow (Salix sitchensis) confirmed Snoq Pass, also NF Nooksack R; Birch (Betula); Red Alder (Alnus rubra); Gooseberry and Currant (Ribes); Cascade Azalea (Rhododendron albiflorum);
Hoary Comma Polygonia gracilis Sticky Currant (Ribes viscosissimum); Squaw Currant (Ribes cereum); Elm (Ulmus); Cascade Azalea or White Rhododendron (Rhododendron albiflorum); Whitestem Gooseberry (Ribes inerme); Golden Currant (Ribes aureum); Swamp (Prickly) Gooseberry (Ribes lacustre);
Compton Tortoiseshell Nymphalis vaualbum Paper Birch (Betula papyrifera); Water Birch (Betula occidentalis); elsewhere Willow (Salix); Aspen (Populus);
California Tortoiseshell Nymphalis californica Mountain Balm (Ceanothus velutinus); Deerbrush (Ceanothus integerrimus); Red Stem Ceanothus (Ceanothus sanguineus); other Ceanothus, shrubs & trees;
Mourning Cloak Nymphalis antiopa Willow (Salix); Scouler's Willow (Salix scouleriana); Coyote Willow (Salix exigua); Weeping Willow (Salix babylonica); White Willow (Salix alba); Poplar, Aspen (Populus); Black Cottonwood (Populus trichocarpa); Quaking Aspen (Populus tremuloides); Elm (Ulmus); Wild Rose (Rosa); Hackberry (Celtis); Hawthorn (Crataegus); Birch (Betula); Spiraea (Spiraea); Alder (Alnus); Maple (Acer); Apple (Pyrus);
Milbert's Tortoiseshell Aglais milberti Stinging Nettle (Urtica dioica);
American Lady Vanessa virginiensis Pearly Everlasting (Anaphalis margaritacea); Nuttall's Pussy-toes (Antennaria parviflora); Tarragon (Artemisia dracunculus); Western Mugwort (Artemisia ludoviciana); Stinging Nettle (Urtica dioica); Lowland Cudweed (Gnaphalium palustre);
Painted Lady Vanessa cardui Thistles (Carduus, Cirsium, Silybum) especially Canadian Thistle (Cirsium arvense); Composites; legumes; borages; Pearly Everlasting (Anaphalis margaritacea); Cryptantha; Fiddleneck (Amsinckia); Mallow (Malva); Lupine (Lupinus); Tarragon (Artemisia dracunculus); Western Mugwort (Artemisia ludoviciana); Stinging Nettle (Urtica dioica);
West Coast Lady Vanessa annabella Hollyhock (Althaea rosea); Streambank Globemallow (Iliamna rivularis); Common Mallow (Malva sylvestris); Cheeseweed (Malva rotundifolia); Alkali Mallow (Sida hederacea); Globe Mallow (Sphaeralcea); Checkermallow (Sidalcea); Stinging Nettle (Urtica dioica);
Red Admiral Vanessa atalanta Stinging Nettle (Urtica dioica); Pellitory (Parietaria pennsylvanica); False Nettle (Boehmeria); Hops (Humulus lupulus);
Viceroy Limenitis archippus Peachleaf Willow (Salix amygdaloides); Coyote Willow (Salix exigua); Poplar, Aspen (Populus); Plum, Cherry (Prunus); Hawthorn (Crataegus); Apple (Pyrus);
Lorquin's Admiral Limenitis lorquini Willow (Salix); Poplar, Aspen (Populus); Chokecherry (Prunus virginiana); Wild Cherry (Prunus); orchard fruit trees; Douglas Spiraea (Spiraea douglassi); Apple (Pyrus); Ocean Spray (Holodiscus discolor); Serviceberry (Amelanchier alnifolia);
Common Ringlet Coenonympha tullia Grasses; Bluegrass (Poa);
Common Wood Nymph Cercyonis pegala Grasses;
Great Basin Wood Nymph Cercyonis sthenele Grasses; Bluegrass (Poa);
Small Wood Nymph Cercyonis oetus Grasses; Bluegrass (Poa);
Vidler's Alpine Erebia vidleri Grasses; Sedges; Pinegrass (Calamagrostis rubescens);
Page 7 of 8 BUTTERFLY LARVAL HOST PLANTS English Name Latin Name______
Common Alpine Erebia epipsodea Grasses; Bluegrass (Poa); Sedges;
Chryxus Arctic Oeneis chryxus Grasses; Bluegrass (Poa); possibly Idaho Fescue (Festuca idahoensis); Sedges;
Monarch Danaus plexippus Showy Milkweed (Asclepias speciosa); Narrow-leaved Milkweed (Asclepias fascicularis);
Silver-spotted Skipper Epargyreus clarus Big Deervetch (Lotus crassifolius); Locust (Gleditsia); Black Locust (Robinia pseudo-acacia); Licorice (Glycyrrhiza lepidota); maybe domestic Wisteria;
Dreamy Duskywing Erynnis icelus Willows (Salix); Quaking Aspen (Populus tremuloides); other Poplars; Birch (Betula); Black Locust (Robinia pseudo-acacia); Sitka Willow (Salix sitchensis) 7-24-05 Bernhardt Creek;
Pacuvius Duskywing Erynnis pacuvius Mountain Balm – confirmed 6-12-04 eggs + reared (Ceanothus velutinus);
Persius Duskywing Erynnis persius Big Deervetch (Lotus crassifolius); Golden Banner (Thermopsis montana); Broadleaf Lupine (Lupinus latifolius); Silky Lupine (Lupinus sericeus); Locoweed (Astragalus);
Two-banded Check. Skip. Pyrgus ruralis Cinquefoil (Potentilla); Strawberry (Fragaria); Checker-mallow (Sidalcea); probably Big-leafed Avens (Geum macrophyllum); possibly Tawny Horkelia (Horkelia fusca);
Common Check. Skipper Pyrgus communis Streambank Globemallow (Iliamna rivularis); Oregon Checker-mallow (Sidalcea oregana); Cheeseweed (Malva parviflora); Dwarf Mallow (Malva neglecta); Alkali-mallow (Sida hederacea); Munro's Globe-mallow (Sphaeralcea munroana);
Northern White-Skipper Heliopetes ericetorum Streambank Globemallow (Iliamna rivularis); Common Mallow (Malva sylvestris); Alkali-mallow (Sida hederacea); Cheeseweed (Malva parviflora);
Common Sootywing Pholisora catullus Lambsquarters (Chenopodium album); Red Goosefoot (Chenopodium rubrum); Fremont's Goosefoot (Chenopodium fremontii); Rough Pigweed (Amaranthus retroflexus); Prostrate Pigweed (Amaranthus graecizans); Red Orache (Atriplex rosea);
Arctic Skipper Carterocephalus palaemon Purple Reedgrass (Calamagrostis purpurascens); Other grasses;
Garita Skipperling Oarisma garita Kentucky Bluegrass (Poa pratensis); Squirreltail (Sitanion); Needlegrass (Stipa); Grama (Bouteloua);
European Skipperling Thymelicus lineola Timothy "Hay" (Phleum pratense); Orchard Grass (Dactylis glomerata); Couch Grass (Agropyron repense);
Juba Skipper Hesperia juba Kentucky Bluegrass (Poa pratensis); Needlegrass (Stipa); Brome Grass (Bromus); Hairgrass (Deschampsia);
Common Branded Skipper Hesperia comma Thurber's Needlegrass (Stipa thurberiana); Ryegrass (Lolium); Brome Grass (Bromus); Idaho fescue (Festuca idahoensis); Sheep Fescue (Festuca ovina); Muhly (Muhlenbergia); Vernalgrass (Andropogon);
Western Branded Skipper Hesperia colorado Thurber's Needlegrass (Stipa thurberiana); Ryegrass (Lolium); Brome Grass (Bromus); Idaho fescue (Festuca idahoensis); Sheep Fescue (Festuca ovina); Muhly (Muhlenbergia); Vernalgrass (Andropogon);
Peck's Skipper Polites peckius Kentucky Bluegrass (Poa pratensis); Rice Cutgrass (Leersia oryzoides); probably other grasses;
Page 8 of 8 BUTTERFLY LARVAL HOST PLANTS English Name Latin Name______
Tawny-edged Skipper Polites themistocles Grasses, especially Witchgrass (Panicum); Kentucky Bluegrass (Poa pratensis); Mannagrass (Glyceria); Crabgrass (Digitaria); sometimes sedges (Carex);
Long Dash Polites mystic Grasses, especially Bluegrass (Poa); Wheatgrass (Agropyron); Timothy (Phleum);
Sachem/Field skipper Atalopedes campestris Bermuda Grass (Cynodon dactylon); Crabgrass (Digitaria); Goosegrass (Eleusine indica); other grasses;
Woodland Skipper Ochlodes sylvanoides Bermuda Grass (Cynodon dactylon); Bluebunch Wheatgrass (Agropyron spicatum); Bearded Wheatgrass (Agropyron caninum); Colonial Bentgrass (Agrostis tenuis); Common Wild Oat (Avena fatua); Siberian Wildrye (Elymus giganteus); Giant Wildrye (Elymus cinereus);
Dun Skipper Euphyes vestris Sedges (Carex & Cyperus); Thread-leaved Sedge (Carex filifolia); Grasses; Yellow Nut-grass (Cyperus esculentus);
Comm. Roadside Skipper Amblyscirtes vialis Kentucky Bluegrass (Poa pratensis); Oats (Avena); False Melic (Schizachne purpurascens); Bent Grass (Agrostis); Bermuda Grass (Cynodon dactylon); probably Saltgrass (Distichlis); fn: Larval Host Plant Portrait.doc Rev. 3-10-04 Rev. 4-01-04 Rev. 5-18-04 Rev. 1-05-05, major rev. Rev. 2-28-05, very minor Rev. 4-18-05, asters Rev. 3-17-06 major rev. Rev. 1-02-07