Harris's Checkerspot Chlosyne harrisii Thunder Bay Northern Crescent Phyciodes cocyta Field Naturalists Tawny Crescent Phyciodes batesii Question Mark interrogationis Eastern Comma Polygonia comma Checklist of the of Satyr Comma Thunder Bay District, Ontario Green Comma Hoary Comma Polygonia gracilis Gray Comma Polygonia progne The following is a checklist of the butterflies and skippers Compton Tortoiseshell Nymphalis l-album known from the Thunder Bay District. The list was compiled by Mourning Cloak Nymphalis antiopa Dr. Nick Escott, based on his records and those of Alan Milbert's Tortoiseshell Aglais milberti Wormington and John Walas. American Lady Vanessa virginiensis Painted Lady Vanessa cardui Red Admiral Vanessa atalanta Common Buckeye Junonia coenia White Admiral Limenitis arthemis arthemis Viceroy Limenitis archippus Northern Pearly-Eye Lethe anthedon Common Ringlet Coenonympha tullia Common Wood-Nymph Cercyonis pegala Alpine Erebia mancinus Red-disked Alpine Erebia discoidalis Macoun's Arctic macounii Chryxus Arctic Jutta Arctic Oeneis jutta Monarch Danaus plexippus Nomenclature and are based on Toronto

Entomologists’ Association 2019 (TEA Occasional Publication #50-2019). Some species have been added and changes in nomenclature have been made since the original checklist was published in 2000. The list comprises 87 species.

This list is current as of August 2019.

Common name Scientific Name Little Yellow Pyrisitia lisa SKIPPERS HESPERIIDAE Dainty Sulphur Nathalis iole Northern Cloudywing Thorybes pylades GOSSAMER-WINGS Dreamy Duskywing Erynnis icelus Harvester Feniseca tarquinius Grizzled Pyrgus centaureae Bronze Copper hyllus Common Checkered Skipper Bog Copper Arctic Skipper palaemon Dorcas Copper Lycaena dorcas Least Skipper Ancyloxypha numitor Purplish Copper European Skipper Thymelicus lineola Coral Hairstreak Satyrium titus Common Branded Skipper Hesperia comma Striped Hairstreak Satyrium liparops Indian Skipper Hesperia sassacus Brown Elfin Callophrys augustinus Peck's Skipper Polites peckius Hoary Elfin Callophrys polios Tawny-edged Skipper Polites themistocles Eastern Pine Elfin Callophrys niphon Long Dash Skipper Polites mystic Western Pine Elfin Callophrys eryphon Hobomok Skipper Poanes hobomok Eastern Tailed Blue Cupido comyntas Dun Skipper Euphyes vestris Western Tailed Blue Cupido amyntula Pepper and Salt Skipper Amblyscirtes hegon Northern Azure Celastrina lucia Common Roadside Skipper Amblyscirtes vialis Summer Azure Celastrina neglecta

SWALLOWTAILS PAPILIONIDAE Silvery Blue Glaucopsyche lygdamus Pipevine Swallowtail Battus philenor Northern Blue Plebejus idas Black Swallowtail Papilio polyxenes Greenish Blue Plebejus saepiolus Old World Swallowtail Papilio machaon BRUSHFOOTS Canadian Tiger Swallowtail Papilio canadensis Variegated Fritillary Euptoieta claudia

WHITES AND SULPHURS PIERIDAE Great Spangled Fritillary Speyeria cybele Checkered White Pontia protodice Aphrodite Fritillary Speyeria aphrodite Western White Pontia occidentalis Atlantis Fritillary Speyeria atlantis Mustard White Pieris oleracea Bog Fritillary eunomia Cabbage White Pieris rapae Silver-bordered Fritillary Boloria selene Large Marble Euchloe ausonides Meadow Fritillary Clouded Sulphur Colias philodice Frigga Fritillary Boloria frigga Orange Sulphur Colias eurytheme Freija Fritillary Pink-edged Sulphur Colias interior Arctic Fritillary Palaeno Sulphur Colias palaeno Silvery Checkerspot Chlosyne nycteis