In addition to entertaining us with their bright colors and interesting life histories, butterflies serve as easily observed indicators of the biotic diversity and the true degree of unaltered natural environment retained in local areas. This is due to their attachment to an array of specialized host plants and to their notable sensitivity to environmental disturbances and introduced chemical agents during the larval stage. Thus, the variety of butterfly species obtained from a local survey and photographic record can contribute to an environmental understanding, and the survey and photographic activity can offer a pleasant pastime and beautiful photo-record for sunny spring and summer days spent outdoors.
There is a checklist available to aid in this endeavor by summarizing the known diversity and biological data on butterfly species at the Howard County level. For a copy of The Butterflies of Howard County, Maryland: A Biological Summary and Checklist in PDF format, click HERE.
This web page is for people who are curious as to what a particular species looks like (in various forms) with several photos (including male and female if they are different). It may help them verify their identification of a butterfly they are looking at or photographed. And it is a way to enjoy the butterfly photos provided.
If you want more information and photos of a particular species, click on the common name in the sections below; it will bring up the appropriate page from the Butterflies and Moths of North America web page. You may also want to go to BugGuide.
Information was compiled by Richard H. (Dick) Smith. All photos have been reviewed by Dick, and he has provided the margin comments as aids to identification.
This is a work in process, and will be periodically updated as more photos are sent to the web. For the list of butterfly species photos still needed, go to Photos still needed!
Start by deciding which of the major phylogenetic groups the butterfly is in. Clicking on the group name will take you to the section with the species and photos for that group. Clicking on any photo will enlarge the photo on most screens. (Return from the enlarged photo to this web page by clicking on the left arrow in the upper left corner of your browser.)
Place name abbreviations: MPEA - Middle Patuxent Environment Area; PRSP - Patuxent River State Park; PVSP - Patapsco River Valley State Park; UMDCF - University of Maryland Central Farm.
Spread-winged Skippers
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Grass-Skippers
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Swallowtails
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Whites & Sulphurs
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Gossamer wings
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Brushfoots
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Satyrs
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Milkweed Butterflies
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Spread-winged Skippers |
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| Silver-spotted Skipper (1.75–2.7") | Common: May-Sep | Open woods, fields, gardens | Variety of flowers | Locusts, tick trefoils, wisteria | |
April 23, 2011 |
September 12, 2010 |
August 22, 2006 |
Female |
Notice how much the color of the forewing yellow-orange band can vary. |
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| Juvenal's Duskywing (1.25–1.9") | Common: M-Apr to L-May | Woods trails & edges | Mud puddles | Red oaks, white oaks | |
April 18, 2008 |
April 18, 2008 |
Note the two spots on the underside of the hindwing near the edge in the second photo. This view is necessary during April and May in order to distinguish Juvenal's Duskywing from the almost identical Horace's Duskywing (which lacks these spots). The two species look similar when viewed from the top. Juvenal's has a single brood in the spring and is not seen after the end of May. |
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| Horace's Duskywing (1.4–1.9") | Common: L-Apr to E-Sep | Woods (May); marshes (Jul) | Buttonbush | Red oaks, white oaks | |
July 19, 2008 |
July 16, 2011 |
August 17, 2010 |
September 19, 2010 |
Female |
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| Wild Indigo Duskywing (1.3–1.7") | Common: Jun, Aug to E-Sep | Open areas, powerline cuts | Variety of flowers | Wild indigo & crown vetch | |
May 8, 2009 |
August 30, 2009 |
September 8, 2006 |
October 4, 2011 |
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| Common Checkered-Skipper (1–1.5") | Uncommon: L-Aug to E-Oct | Open, weedy areas | White clover | Mallows, hollyhocks | |
October 2, 2010 |
October 8, 2011 |
October 9, 2011 |
September 18, 2010 |
October 15, 2011 |
August 20, 2011 |
Grass-Skippers |
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| Clouded Skipper (1.25–1.75") | Rare: L-Aug & Sep | Brushy wet meadows | New York ironweed | Woolly beardgrass | |
July 19, 2008 |
July 19, 2008 |
July 19, 2008 |
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| Least Skipper (0.8–1.2") | Common: L-May to E-Oct | Grassy stream edges | Broad grass blades | Bluegrass, rice cutgrass | |
September 15, 2009 |
Male |
July 9, 2011 |
April 23, 2011 |
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| Fiery Skipper (1.25–1.5") | Uncommon: L-Aug to M-Sep | Marshy areas | Tickseed sunflower | Crabgrass, Bermuda grass | |
September 24, 2009 |
Male |
Male |
Male |
Male |
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Female |
Female |
Female |
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| Peck's Skipper (1–1.25") | Common: May to M-Jun, Aug | Wet Meadows | New York Ironweed | Rice cutgrass | |
May 31, 2007 |
July 16, 2010 |
July 16, 2011 |
August 22, 2011 |
July 24, 2007 |
In last photo, male is on the right |
| Tawny-edged Skipper (0.8–1.5") | Uncommon: L-May & Aug | Wet Meadows | New York Ironweed | Panic grasses | |
Male |
![]() Female |
![]() Female |
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| Crossline Skipper (1.1–1.5") | Abundant: Jun to L-Jul, Sep | Wet meadows, dry hillsides | Swamp milkweed | Purpletop grass | |
May 29, 2006 |
July 30, 2011 |
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| Little Glassywing (1.1–1.5") | Common: M-Jun to Aug | Wet meadows & woods edges | New York Ironweed | Purpletop grass | |
Male |
August 19, 2006 |
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Female |
Female |
Female |
Female |
Males do not have the large rectangular white spot on the forewing |
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| Sachem (1.25–1.7") | Abundant: M-Jul thru Sep | Lawns, fields, & marshes | Tickseed sunflower | Crabgrass, Bermuda grass | |
Male |
Male |
Male |
Male |
Male |
Male |
Male |
Male |
Female |
Female |
Female |
Female |
| Hobomok Skipper (1–1.7") | Uncommon: L-May to M-Jun | Woods trails & edges | Blackberry blossoms | Panic grass, bluegrass | |
July 28, 2008 |
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| Zabulon Skipper (1.3–1.7") | Uncommon: L-May to Jun, Aug | Woods trails & edges | Leaf & branch tips | Purpletop grass, lovegrass | |
Male |
Male |
Male |
Male |
Male |
Male |
Female |
Female |
Female |
Male |
Male |
Male |
| Dun Skipper (1.1–1.4") | Uncommon: L-Jun to Jul, Aug | Marsh edges | Common milkweed | Sedges, grasses | |
Male |
Female |
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Swallowtails |
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| Pipevine Swallowtail (2.75–5") | Rare: L-Jun & L-Jul | Fields & marshes near woods | Swamp milkweed | Dutchman's pipe, Va. snakeroot | |
Male |
Male |
Female |
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| Zebra Swallowtail (2.5–4") | Uncommon: L-Apr & E-Jul | River edges | Highbush blueberry | Pawpaw | |
May 8, 2005 |
Underside |
June 23, 2007 |
July 11, 2010 |
July 16, 2010 |
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| Black Swallowtail (3.25–4.25") | Uncommon: May thru Aug | Open, weedy fields & marshes | Common milkweed | Queen Anne's lace, parsley | |
Male |
Male |
Male |
Female |
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| Eastern Tiger Swallowtail (3.6–6.5") | Common/abundant: E-May, Aug | Fields & gardens | Joe-Pye weed, thistles | Tulip popular & wild cherry | |
Male |
Male |
Male |
September 22, 2011 |
Eastern Tiger Swallowtails "puddling" to absorb minerals. (Any of the swallowtails may do this.) |
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Female |
Dark form female |
Dark form female |
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| Spicebush Swallowtail (3–4") | Common: E-May to E-Sep | Woods trails, edges & gardens | Joe-Pye weed, thistles | Spicebush & sassafras | |
Male |
Male |
Male |
NEED Spicebush Swallowtail (FEMALE) |
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Whites & Sulphurs |
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| Checkered White (1.5–2.5") | Rare: L-Jun to L-Aug | Trails in open weedy areas | White clover | Peppergrass, shepherd's purse | |
June 28, 2008 |
June 28, 2008 |
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| Cabbage White (1.75–2.25") | Abundant: L-Mar thru Oct | Fields & woods trails | Canada thistle | Crucifers (mustards & cabbage) | |
Male |
Female |
Female |
Female |
Female |
Males have one black spot on the forewing, females two. |
| Falcate Orangetip (1.35–1.75") | Uncommon: L-Apr to E-May | Open woods | Mustards | Rock cress | |
Female |
NEED Falcate Orangetip (MALE) | ||||
| Clouded Sulphur (1.5–2.75") | Common: E-Apr thru E-Nov | Open woods, clover fields | Clover blossoms | Clovers | |
Male |
Male |
White form female |
September 22, 2011 |
Clouded Sulphurs "puddling" to absorb minerals. (Any of the sulphurs may do this.) |
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| Orange Sulphur (1.3–2.75") | Common/abundant: L-Apr thru E-Nov | Open fields, alfalfa fields | Red clover | Clovers & vetches | |
Male |
Male |
Female |
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| Little Yellow (1.25–1.75") | Uncommon/rare: L-Aug to E-Sep | Sandy fields & hillsides | Sennas, partridge pea | Sennas | |
July 19, 2003 |
September 23, 2010 |
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| Sleepy Orange (1.3–2.25") | Rare: E-Sep | Field & river edges | Wild senna | Wild senna | |
October 4, 2011 |
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Gossamer-wings |
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| American Copper (0.75–1.4") | Uncommon: Jun thru Aug | Weedy, grassy fields | White clover | Sheep sorrel | |
September 4, 2011 |
September 24, 2009 |
June 12, 2009 |
September 24, 2009 |
August 30, 2008 |
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| Banded Hairstreak (1–1.5") | Uncommon: M to L-Jun | Woods trails & edges | Indian hemp, milkweed | Various oaks | |
June 15, 2009 |
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| Red-Banded Hairstreak (0.85–1.25") | Common: L-May & Aug | Woods edges, brushy areas | Leaf tips, Indian hemp | Fallen leaves of sumacs & oaks | |
June 13, 2008 |
July 10, 2011 |
July 29, 2011 |
August 3, 2006 |
August 23, 2010 |
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Male |
Males of most butterfly species emerge from chrysalises several days before the females and will show some wear like the Centennial specimen, whereas the females will be fresh. Thus, the Centennial specimen is probably a male. Since the Font Hill specimen does not have the iridescent colors and is obviously fresher, it is probably a female. |
Female |
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| Brown Elfin (0.8–1.1") | Rare: L-Apr | Woods trails & edges | Laurel leaves | Huckleberry | |
May 1, 2001 |
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| White M Hairstreak (1.25–1.7") | Rare: L-Apr, Aug-Sep | Woods clearings & edges | Lance-leaved goldenrod | Oaks | |
August 28, 2011 |
August 29, 2011 |
April 25, 2009 |
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| Gray Hairstreak (0.85–1.4") | Common: L-Apr to E-Oct | Open fields & roadsides | White clover, trefoils | Tick trefoil, vetch, clovers | |
July 9, 2010 |
July 15, 2010 |
August 16, 2010 |
September 24, 2011 |
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September 4, 2011 |
October 4, 2008 |
October 9, 2011 |
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| Eastern Tailed-Blue (0.8–1.2") | Common/abundant: L-Apr to E-Oct | Open fields & roadsides | White clover, trefoils | Beggar's-ticks, clovers | |
Male |
Male |
Male |
Male |
Male |
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Female |
Female |
Female |
M & F |
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| Spring Azure (0.8–1.4") | Common: E-Apr to E-May | Woods trails & edges | Mud puddles | Dogwood, wild cherry | |
April 10, 2011 |
Single brood, but long individual adult emergence period |
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| Summer Azure (0.9–1.2") | Common: L-May thru E-Oct | Woods trails & edges | Mud puddles | Viburnum, wingstem | |
June 25, 2011 |
July 4, 2006 |
July 15, 2010 |
September 1, 2001 |
Multiple broods |
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Brushfoots |
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| American Snout (1.4–2") | Rare: E-Jul | Roadsides, woods edges | Mud puddles | Hackberry | |
September 20, 2009 |
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| Variegated Fritillary (1.75–3.2") | Uncommon: Aug to M-Oct | Dry fields & gardens | Red clover, pansies | Violets & pansies | |
June 3, 2011 |
August 19, 2010 |
October 9, 2011 |
May 28, 2006 |
July 19, 2008 |
August 20, 2010 |
| Great Spangled Fritillary (2.5–4") | Common: M-Jun to E-Sep | Fields & gardens | Milkweeds, thistles | Yellow & blue violets | |
May 29, 2010 |
July 15, 2010 |
June 17, 2006 |
August 12, 2007 |
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| Meadow Fritillary (1.3–2") | Uncommon: Apr, Jun & E-Sep | Grassy wet meadows | Indian hemp, spearmint | Wooly blue violets | |
July 15, 2010 |
Male, based on the shape of the abdominal tip. |
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| Silvery Checkerspot (1.4–2") | Rare: E-Jun to Aug | Wood trails along rivers | Sunflower | Wingstem & wild sunflower | |
June 26, 2009 |
Five still shots taken from a video by Robert Schaefer at his home |
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| Pearl Crescent 1.25–1.75" | Abundant: E-May to E-Nov | Fields & gardens | Butterflyweed, milkweed | Various asters | |
Male |
September 4, 2009 |
September 2, 2009 |
Ocotober 8, 2010 |
October 8, 2011 |
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September 22, 2011 |
March 20, 2006 |
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| Baltimore Checkerspot (1.75–2.75") | Rare: M-Jun | Interiors of marshes | Grassblades, daisies | Turtlehead | |
June 29, 2009 |
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| Question Mark (2.25–3") | Uncommon: Apr, Jun & E-Sep | Woods, roads | Rotting fruit & sap | Nettles, elm, hackberry | |
July 19, 2003 |
October 6, 2010 |
October 7, 2010 |
Notice smoother wing margin and elongate tail (compared with Eastern Comma). |
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| Eastern Comma (1.75–2.5") | Uncommon: Apr, Jun & E-Sep | Woods, roads | Rotting fruit & sap | Nettles, elm, hops | |
Summer form |
Summer form |
October 9, 2009 |
September 28, 2011 |
October 9, 2009 |
October 4, 2009 |
| Mourning Cloak (2.25–4") | Uncommon: E-Apr, Jun & Sep | Woods, roads | Rotting fruit & sap | Willow, elm, cottonwood | |
April 30, 2007 |
May 27, 2010 |
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| American Lady (1.75–2.7") | UncommonL-Apr thru Sep | Weedy fields | Milkweed, Indian hemp | Everlasting & pussytoes | |
July 26, 2007 |
October 17, 2011 |
July 26, 2007 |
August 20, 2010 |
August 16, 2008 |
August 26, 2010 |
| Painted Lady (2–2.9") | Uncommon: L-Apr, Jun to Sep | Weedy fields | Thistles, milkweed | Thistles, mallows | |
August 21, 2010 |
Jun 6, 2010 |
September 20, 2009 |
September 14, 2009 |
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| Red Admiral (1.75–3") | Uncommon: L-May to E-Sep | Woods trails ;& edges | Joe-Pye weed | Nettles | |
May 15, 2010 |
July 17, 2007 |
July 29, 2010 |
August 20, 2010 |
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| Common Buckeye (1.6–2.75") | Common: L-May thru E-Oct | Dry weedy fields | Lance-leaved goldenrod | Plantain, foxglove | |
August 23, 2006 |
September 19, 2010 |
October 7, 2011 |
F & M |
Females are usually larger; in late summer they are darker on the underside than males. |
|
July 26, 2010 |
May 28, 2011 |
August 16, 2010 |
September 21, 2007 |
Late season female |
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| Red-spotted Purple (2.25–4") | Uncommon: L-May to M-Sep | Wet woods roads | Wet spots, rotting fruit | Wild cherry, poplar, aspen | |
May 7, 2010 |
July 20, 2011 |
August 26, 2011 |
August 9, 2004 |
August 23, 2006 |
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| Viceroy (2.5–3.4") | Uncommon: L-May to M-Sep | Pond & stream edges | Willow leaves | Willows & poplars | |
May 21, 2011 |
July 17, 2011 |
September 6, 2006 |
September 15, 2009 |
July 17, 2011 |
August 30, 2008 |
| Hackberry Emperor (1.3–2.5") | Rare: M-Jun & M-Aug | Woods trails & edges | Wet spots | Hackberry | |
July 15, 2008 |
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Satyrs |
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| Northern Pearly-eye (1.75–2.7") | Rare: E-Jun & M-Aug | Damp, grassy woods trails | Mud puddles | Bottlebrush & plume grass | |
June 9, 2011 |
July 10, 2010 |
August 23, 2010 |
August 28, 2011 |
September 3, 2009 |
September 17, 2008 |
| Appalachian Brown (1.8–2.25") | Common: Jun & Aug | Interiors of bushy marshes | Alder leaves | Sedges | |
July 20, 2010 |
July 5, 2009 |
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| Little Wood-Satyr (1.5–1.9") | Common: L-May thru Jun | Brushy woods edges | Low shiny leaves | Orchard grass | |
June 3, 2011 |
May 29, 2011 |
June 1, 2007 |
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| Common Wood-Nymph (1.75–3") | Uncommon: Jul & Aug | Dry grassy fields near woods | Tree trunks | Grasses, including purpletop | |
August 28, 2009 |
July 16, 2008 |
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Milkweed Butterflies |
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| Monarch (3.3–4.9") | Common: May to M-Oct | Open meadows | Milkweed & goldenrods | Milkweed | |
Male |
Female |
August 26, 2010 |
August 6, 2010 |
August 23, 2010 |
August 27, 2010 |
Photos Still Needed |
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To download a PDF copy of this list of photos needed, click HERE.We welcome submissions of butterfly photos taken in Howard County.Email submissions (originals, unmodified except
possible cropping) as attachment to email to Howard County
Bird Club. Please include your name, date of photo, and
location. |
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| Long-tailed Skipper (1.75–2.3") | Rare: Aug-Sep | Gardens, open roadsides | Variety of flowers | Beans, legume vines | |
| Hoary Edge (1.75–1.9") | Rare: M-Jun to E-Jul | Fields & forest edges | Red clover, milkweed | Tick trefoils | |
| Southern Cloudywing (1.3–1.8") | Uncommon: L-May to M-Aug | Dry fields at woods edges | Indian hemp (dogbane) | Tick trefoils, bush clover | |
| Northern Cloudywing (1.25–1.8") | Uncommon: M-Jun to E-Jul | Dry fields at woods edges | Indian hemp (dogbane) | Tick trefoils, bush clover | |
| Hayhurst's Scallopwing (1–1.25") | Rare: L-Jul to M-Aug | Woods edges along streams | Burdock | Lamb's quarters | |
| Dreamy Duskywing (1.1–1.5") | Uncommon: E-May to E-Jun | Dry fields & woods trails | Mud puddles | Willows, poplars, aspens | |
| Sleepy Duskywing (1.25–1.75") | Uncommon: M-Apr to E-May | Woods trails & edges | Mud puddles | Scrub oak | |
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Common Sootywing (1–1.3") |
Uncommon: May to Aug | Gardens & fields | White sweet clover | Lamb's quarters | |
| Swarthy Skipper (1–1.2") | Uncommon: Jun, Aug & Sep | Dry fields with broomsedge | Low grassblades | Little bluestem beardgrass | |
| European Skipper (1–1.2") | Uncommon: M to L-Jun | Fields with tall grass | Purple vetch | Timothy grass | |
| Northern Broken-Dash (1–1.25") | Uncommon: M-Jun to E-Aug | Weedy fields | Indian hemp, milkweed | Panic grasses | |
| Mulberry Wing (1.1–1.5") | Uncommon: E to M-Jul | Interiors of sedge marshes | Swamp milkweed | Tussock sedge | |
| Dusted Skipper (1.25–1.7") | Rare: L-May | Dry fields with beardgrass | Low grassblades | Little bluestem beardgrass | |
| Ocola Skipper (1.3–1.7") | Rare: L-Aug, Sep | Wet meadows | New York ironweed | Grasses | |
| Cloudless Sulphur (2.25–3.1") | Rare: L Aug - M Sep | Open fields | Senna, partridge pea | Sennas | |
| Harvester (1.1–1.25") | Rare: Jun & Aug | Wet, bushy woods trails | Mud puddles near alders | Larvae feed on wooly aphids | |
| Bronze Copper (1.25–1.9") | Rare: L May - & M-Aug | Marshes & wet meadows | Indian hemp (dogbane) | Water dock & curled dock | |
| Coral Hairstreak (1–1.5") | Rare: L-Jun | Old fields, powerline cuts | Butterflyweed | Wild cherry, chokecherry | |
| Striped Hairstreak (1–1.5") | Rare: L-Jun | Swamp & marsh edges | Indian hemp, N.J. tea | Blueberry, hawthorn | |
| Juniper Hairstreak (1–1.25") | Rare: L-Apr & M-Jul | Mature red cedar groves | Red cedar treetops | Red cedar | |
| Eastern Pine Elfin (1–1.25") | Rare: L-Apr to E-Jun | Open scrub pine groves | Pussytoes | Various hard pines | |
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