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  • Hesperiidae
  • Erynnis
  • Juvenal's Duskywing (Erynnis juvenalis)
Juvenal's Duskywing (Erynnis juvenalis), (Fabricius, 1793) - 3947.000000 - 770088.000000

Wing span: 3.5-4.0 cm.

Flight time: A single flight occurring from mid-April to mid-June.

    • Status:** Uncommon breeding resident.

Distinguishing features: Juvenal's Duskywing is the only species of is genus in the state that has prominent hyaline spots on the fore wings with two subapical pale spots on the ventral hindwing.

Distribution and habitat: . Juvenal's Dusky Wing has been found essentially across the entire state, although it appears to be more common in the eastern third. It occurs in a variety of oak-dominated forests, and may be more common in undisturbed forest habitats.

Natural History: The larvae of Juvenal's Duskywing feed on oaks and make leaf-nests. The adults are fast flyers and may often be seen resting on vegetation or puddling along roadsides and trails.


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Last updated on 2023-04-14 02:35:24
← Erynnis icelus
Erynnis lucilius →
Photos
Records
Record # Date Locale State Lat/Lon Collected By Count
317749 2022-05-07 Turkey Run Wildlife Area, Lee County Iowa 40.557863 -91.680371 Jay Gilliam 1
317753 2022-05-07 Stephens State Forest- Mine Pond Iowa 41.016084 -93.479874 Jay Gilliam 3
327830 2022-05-07 Port Louisa National Wildlife Refuge Iowa 41.239649 -91.124611 IBSN 1
317739 2022-05-01 Slip Bluff County Park Iowa 40.652884 -93.847544 Jay Gilliam 9
317725 2022-04-24 Slip Bluff County Park Iowa 40.652884 -93.847544 Jay Gilliam 6
304276 2021-05-07 Port Louisa National Wildlife Refuge Iowa 41.239649 -91.124611 IBSN 1
300363 2021-04-24 Slip Bluff County Park Iowa 40.652884 -93.847544 Jay Gilliam 4
300370 2021-04-24 Stephens State Forest- Mine Pond Iowa 41.016084 -93.479874 Jay Gilliam 6
287454 2021-04-17 Stephens State Forest - Thousand Acre Unit, Lucas County Iowa 41.104584 -93.101778 Jay Gilliam 1
274135 2020-05-02 Shimek State Forest, Donnellson Unit Iowa 40.64741 -91.686584 Frank Olsen 1
280968 2020-05-01 Shimek State Forest, Croton Unit East Iowa 40.545896 -91.616881 Chris Edwards 1
280969 2020-05-01 Shimek State Forest, Croton Unit West Iowa 40.566286 -91.658401 Chris Edwards 2
280970 2020-05-01 Shimek State Forest, Donnellson Unit Iowa 40.643603 -91.67741 Chris Edwards 2
280971 2020-05-01 Shimek State Forest, Farmington Unit Iowa 40.653998 -91.72554 Chris Edwards 1
275092 2020-04-30 Stephens State Forest - Thousand Acre Unit, Lucas County Iowa 41.103003 -93.101751 Jay Gilliam 1
240270 2019-05-04 Shimek State Forest, Farmington Unit Iowa 40.64802 -91.7254 Mark Brown 1
248624 2019-04-26 Shimek State Forest, Lacey Keosauqua Unit Iowa 40.704556 -92.012966 Chris Edwards 4
228437 2018-05-04 Shimek State Forest, Croton Unit East Iowa 40.545896 -91.616881 Chris Edwards 6
228445 2018-05-04 Shimek State Forest, Donnellson Unit Iowa 40.643603 -91.67741 Chris Edwards 2
228455 2018-05-04 Shimek State Forest, Farmington Unit Iowa 40.653998 -91.72554 Chris Edwards 4
199369 2017-05-09 Hitaga Sand Ridge Prairie Preserve Iowa 42.24944 -91.63056 Frank Olsen 2
202868 2017-05-07 Stephens State Forest - Thousand Acre Unit, Monroe County Iowa 41.116843 -93.084809 Chris Edwards 1
199600 2017-05-05 Rock Island Botanical State Preserve Iowa 42.0258 -91.72638 Frank Olsen 2
201931 2017-05-04 Albia Iowa 41.02668 -92.80575 Jacob Newton 1
186772 2017-04-23 Waubonsie State Park Iowa 40.676 -95.689 Frank Olsen 6
199866 2017-04-23 Waubonsie State Park Iowa 40.676 -95.689 Frank Olsen 2
199872 2017-04-23 Waubonsie State Park Iowa 40.676 -95.689 Frank Olsen 4
186929 2017-04-21 Eldon Wildlife Management Area Iowa 40.893149 -92.264579 Mark Brown 1
202866 2017-04-17 Shimek State Forest, Croton Unit East Iowa 40.545896 -91.616881 Chris Edwards 5
202867 2017-04-17 Shimek State Forest, Farmington Unit Iowa 40.653998 -91.72554 Chris Edwards 6
202311 2017-04-15 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
182137 2016-05-15 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
182136 2016-05-08 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
182135 2016-05-04 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
182134 2016-04-23 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
182133 2016-04-18 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
182132 2016-04-16 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
182131 2016-04-11 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
136353 2015-05-13 Decatur County, Iowa Iowa Location Protected Sibylla Brown 4
136352 2015-05-08 Decatur County, Iowa Iowa Location Protected Sibylla Brown 4
136351 2015-05-07 Decatur County, Iowa Iowa Location Protected Sibylla Brown 2
136350 2015-05-06 Decatur County, Iowa Iowa Location Protected Sibylla Brown 5
183435 2015-05-04 Lacey-Keosauqua State Park Iowa 40.712037 -91.976555 Chris Edwards 1
136349 2015-04-29 Decatur County, Iowa Iowa Location Protected Sibylla Brown 1
183425 2015-04-27 Shimek State Forest, Farmington Unit Iowa 40.653998 -91.72554 Chris Edwards 2
8400 2013-05-12 Shimek State Forest, Donnellson Unit Iowa 40.6505556 -91.6866667 Tom Jantscher 1
8401 2013-05-12 Shimek State Forest, Donnellson Unit Iowa 40.6427778 -91.6936111 Tom Jantscher 1
8402 2013-05-12 Shimek State Forest, Donnellson Unit Iowa 40.6461111 -91.6877778 Tom Jantscher 1
8399 2013-04-28 Shimek State Forest, Donnellson Unit Iowa 40.6455556 -91.69 Tom Jantscher 1
8410 2012-04-21 Lacey-Keosauqua State Park Iowa 40.7163889 -91.9902778 Tom Jantscher 1
8403 2011-05-08 Shimek State Forest, Lick Creek Unit Iowa 40.6294444 -91.6988889 Tom Jantscher 1
25904 2010-06-20 Des Moines Iowa 41.59 -93.62611 Leland Searles 1
228041 2010-05-09 Lacey-Keosauqua State Park Iowa 40.7125 -91.9944444 Jim Durbin 1
55094 2010-04-29 Yellow River State Forest Iowa 43.17253 -91.25173 Frank Olsen 1
228063 2010-04-23 Leon's Farm, Ohio County Kentucky 37.42033 -86.77023 Jim Durbin 1
6823 2009-05-20 Stephens State Forest - Woodburn Unit Iowa 40.96446 -93.579119 Aaron Brees 1
207891 2009-05-09 Shimek State Forest, Croton Unit East Iowa 40.5686111 -91.6038889 Aaron Brees 6
266215 2009-05-08 Lacey-Keosauqua State Park Iowa 40.71523215 -91.99018841 Jim Durbin 1
6821 2009-05-03 Stephens State Forest - Thousand Acre Unit, Lucas County Iowa 41.103003 -93.101751 Aaron Brees 5
6822 2009-05-03 Stephens State Forest - Woodburn Unit Iowa 40.96446 -93.579119 Aaron Brees 5
138481 2008-05-14 Decatur County Iowa 40.814648 -93.824821 Aaron Brees 1
207890 2008-05-14 Decatur Wildlife Management Area Iowa 40.830629 -93.85059 Aaron Brees 1
55080 2007-05-25 Ryan Property Iowa 43.35833 -91.6005 Frank Olsen 3
55081 2006-05-06 Shimek State Forest, Croton Unit East Iowa 40.54693 -91.61435 Doug Veal 1
55056 2006-05-02 Fish Farm Mounds Wildlife Area Iowa 43.427166 -91.287898 Frank Olsen 3
25903 2006-05-01 Shimek State Forest, Donnellson Unit Iowa 40.64833 -91.68057 Jim Durbin 1
55090 2006-04-26 Waubonsie State Park Iowa 40.676 -95.689 Frank Olsen 3
55067 2005-05-30 Kuehn Connservation Area Iowa 41.562794 -94.12889 Keith Summerville 1
114650 2005-05-16 Shimek State Forest, Lick Creek Unit Iowa 40.61233 -91.685905 Chris Edwards 1
25902 2005-05-10 Shimek State Forest, Croton Unit East Iowa 40.54693 -91.61435 Jim Durbin 1
55076 2005-05-03 Rock Island Botanical State Preserve Iowa 42.02732 -91.72723 Frank Olsen 1
55084 2005-04-25 Wanatee County Park Iowa 42.00994 -91.57749 Frank Olsen 1
114656 2005-04-19 Lake MacBride State Park Iowa 41.800146 -91.555669 Chris Edwards 1
55068 2004-05-05 Heritage Pond / Heritage Trail Iowa 42.556 -90.70783 Frank Olsen 2
55069 2004-05-04 Matsell Bridge Natural Area Iowa 42.13131 -91.38886 Frank Olsen 1
55070 2004-05-04 Matsell Bridge Natural Area Iowa 42.13131 -91.38886 Frank Olsen 4
55082 2004-05-03 Wanatee County Park Iowa 42.00994 -91.57749 Frank Olsen 1
114657 2003-05-03 Beam's Woods Iowa 42.142425 -91.343915 Chris Edwards 1
55091 2003-04-22 Waubonsie State Park Iowa 40.676 -95.689 Frank Olsen 6
55064 2002-05-14 Honey Creek State Park Iowa 40.86526 -92.94011 Frank Olsen 5
114654 2002-05-13 Lake Darling State Park Iowa 41.187385 -91.901158 Chris Edwards 1
55062 2002-05-05 Honey Creek State Park Iowa 40.86526 -92.94011 Frank Olsen 22
271752 2002-05-04 Rock Island Botanical State Preserve Iowa 42.02732 -91.72723 Dennis Schlicht 3
55075 2002-05-03 Rock Island Botanical State Preserve Iowa 42.02732 -91.72723 Frank Olsen 3
114658 2002-04-26 Dudgeon Lake Wildlife Management Area Iowa 42.196085 -92.034766 Chris Edwards 1
55063 2002-04-23 Honey Creek State Park Iowa 40.86526 -92.94011 Frank Olsen 11
114659 2001-05-18 Hitaga Sand Ridge Prairie Preserve Iowa 42.253227 -91.632041 Chris Edwards 2
114660 2001-05-17 Yellow River State Forest Iowa 43.170603 -91.240395 Chris Edwards 30
114652 2001-04-30 Fern Cliff County Park Iowa 41.201811 -91.609179 Chris Edwards 10
114653 2001-04-30 Lake Darling State Park Iowa 41.187385 -91.901158 Chris Edwards 2
114655 2001-04-30 Sockum Ridge County Park Iowa 41.21756 -91.653049 Chris Edwards 40
25899 2000-07-23 Shimek State Forest, Croton Unit East Iowa 40.54693 -91.61435 Jim Durbin 1
240061 2000-07-23 Shimek State Forest, Croton Unit East Iowa 40.54693 -91.61435 Jim Durbin 1
25898 2000-07-17 Shimek State Forest, Croton Unit East Iowa 40.54693 -91.61435 Jim Durbin 1
25900 2000-06-15 Shimek State Forest, Croton Unit East Iowa 40.54693 -91.61435 Jim Durbin 1
144484 2000-05-02 Wanatee County Park Iowa 42.00994 -91.57749 Frank Olsen 1
114649 1999-05-11 Shimek State Forest, Lick Creek Unit Iowa 40.61233 -91.685905 Chris Edwards 1
114651 1999-05-10 Lacey-Keosauqua State Park Iowa 40.712037 -91.976555 Chris Edwards 2
55093 1998-07-13 Winneshiek County Iowa 43.23626 -91.90993 1
55092 1998-06-15 Winneshiek County Iowa 43.23626 -91.90993 1
55061 1992-05-08 Hitaga Sand Ridge Prairie Preserve Iowa 42.25233 -91.63633 Frank Olsen 1
55083 1991-05-11 Wanatee County Park Iowa 42.00994 -91.57749 Frank Olsen 5
144347 1991-05-08 Hitaga Sand Ridge Prairie Preserve Iowa 42.24944 -91.63056 Frank Olsen 1
55079 1991-05-07 Rock Island Botanical State Preserve Iowa 42.02732 -91.72723 Frank Olsen 1
55085 1991-04-27 Wanatee County Park Iowa 42.00994 -91.57749 Frank Olsen 1
55078 1990-05-13 Rock Island Botanical State Preserve Iowa 42.02732 -91.72723 Frank Olsen 1
55077 1990-05-11 Rock Island Botanical State Preserve Iowa 42.02732 -91.72723 Frank Olsen 1
124740 1990-05-01 Shaver Park, Cedar Rapids Iowa 42.002284 -91.675458 Frank Olsen 2
124738 1990-04-29 Matsell Bridge Natural Area Iowa 42.13131 -91.38886 Frank Olsen 3
144302 1990-04-29 Matsell Bridge Natural Area Iowa 42.131126 -91.388999 Frank Olsen 1
107041 1990-04-24 Pocahontas County Iowa 42.74456 -94.683864 Ron Harms 1
107042 1990-04-24 Pocahontas County Iowa 42.74456 -94.683864 Ron Harms 1
124549 1989-08-12 Wanatee County Park Iowa 42.00994 -91.57749 Frank Olsen 1
124317 1989-06-04 Matsell Bridge Natural Area Iowa 42.13131 -91.38886 Frank Olsen 1
144257 1989-06-04 Matsell Bridge Natural Area Iowa 42.131126 -91.388999 Frank Olsen 1
124298 1989-05-27 Sac and Fox Trail City Park Iowa 41.946803 -91.611754 Frank Olsen 1
144254 1989-05-27 Indian Creek Nature Center Iowa 41.963207 -91.586629 Frank Olsen 1
124287 1989-05-15 Shaver Park, Cedar Rapids Iowa 42.002284 -91.675458 Frank Olsen 1
124285 1989-05-12 Wanatee County Park Iowa 42.00994 -91.57749 Frank Olsen 1
144252 1989-05-12 Wanatee County Park Iowa 42.00994 -91.57749 Frank Olsen 1
55074 1989-05-07 Preparation Canyon State Park Iowa 41.89133 -95.91407 Tim Orwig 1
124277 1989-05-07 Matsell Bridge Natural Area Iowa 42.13131 -91.38886 Frank Olsen 3
144249 1989-05-07 Matsell Bridge Natural Area Iowa 42.131126 -91.388999 Frank Olsen 1
55088 1989-05-06 Stone State Park Iowa 42.55333 -96.46194 Tim Orwig 1
55072 1988-05-23 Mount Hosmer Park Iowa 43.36597 -91.22188 J. Nehuevaj 1
107039 1988-05-16 Fowler Forest Preserve Iowa 42.232523 -95.945211 Tim Orwig 1
107040 1988-05-16 Fowler Forest Preserve Iowa 42.232523 -95.945211 Tim Orwig 1
55071 1988-05-15 Mount Hosmer Park Iowa 43.36597 -91.22188 J. Nehuevaj 1
55057 1988-05-05 Fish Farm Mounds Wildlife Area Iowa 43.4331 -91.2842 J. Nehuevaj 1
55086 1988-05-02 Stone State Park Iowa 42.55333 -96.46194 Tim Orwig 1
55087 1988-05-02 Stone State Park Iowa 42.55333 -96.46194 Tim Orwig 1
55059 1988-05-01 Five Ridges Prairie State Preserve Iowa 42.67867 -96.53473 Tim Orwig 1
55060 1988-05-01 Five Ridges Prairie State Preserve Iowa 42.67867 -96.53473 Tim Orwig 1
55065 1988-05-01 Hwy76 x Bear Creek Iowa 43.43352 -91.5191 J. Nehuevaj 1
55066 1988-05-01 Black Hawk Point Wildlife Management Area Iowa 43.46996 -91.29466 J. Nehuevaj 1
55058 1987-04-30 Five Ridges Prairie State Preserve Iowa 42.67867 -96.53473 Tim Orwig 1
55073 1983-05-10 Mount Hosmer Park Iowa 43.36597 -91.22188 J. Nehuevaj 1
55089 1983-05-10 Clear Creek Fen Iowa 43.455306 -91.42388 J. Nehuevaj 1
3013 1950-05-01 Allamakee County Iowa 43.243076 -91.443466 USGS - NPWRC 1
3014 1950-05-01 Buchanan County Iowa 42.4566 -91.909927 USGS - NPWRC 1
3015 1950-05-01 Cherokee County Iowa 42.802776 -95.645798 USGS - NPWRC 1
3016 1950-05-01 Clayton County Iowa 42.77853 -91.289101 USGS - NPWRC 1
3017 1950-05-01 Dallas County Iowa 41.612003 -93.987846 USGS - NPWRC 1
3018 1950-05-01 Delaware County Iowa 42.463402 -91.443466 USGS - NPWRC 1
3019 1950-05-01 Dubuque County Iowa 42.469467 -90.829399 USGS - NPWRC 1
3020 1950-05-01 Fayette County Iowa 42.925819 -91.909927 USGS - NPWRC 1
3021 1950-05-01 Fremont County Iowa 40.74004 -95.645798 USGS - NPWRC 1
3022 1950-05-01 Hancock County Iowa 43.038731 -93.662323 USGS - NPWRC 1
3023 1950-05-01 Harrison County Iowa 41.693386 -95.814285 USGS - NPWRC 1
3024 1950-05-01 Henry County Iowa 41.028358 -91.598396 USGS - NPWRC 1
3025 1950-05-01 Iowa County Iowa 41.66246 -92.066521 USGS - NPWRC 1
3026 1950-05-01 Johnson County Iowa 41.669899 -91.598396 USGS - NPWRC 1
3027 1950-05-01 Lee County Iowa 40.706867 -91.443466 USGS - NPWRC 1
3028 1950-05-01 Linn County Iowa 42.065983 -91.676071 USGS - NPWRC 1
3029 1950-05-01 Lucas County Iowa 40.991203 -93.33889 USGS - NPWRC 1
3030 1950-05-01 Mahaska County Iowa 41.32959 -92.698387 USGS - NPWRC 1
3031 1950-05-01 Marion County Iowa 41.317383 -93.177963 USGS - NPWRC 1
3032 1950-05-01 Monona County Iowa 42.001595 -95.983261 USGS - NPWRC 1
3033 1950-05-01 Plymouth County Iowa 42.776665 -96.152695 USGS - NPWRC 1
3034 1950-05-01 Pocahontas County Iowa 42.691803 -94.645035 USGS - NPWRC 1
3035 1950-05-01 Polk County Iowa 41.627842 -93.500343 USGS - NPWRC 1
3036 1950-05-01 Scott County Iowa 41.63932 -90.639374 USGS - NPWRC 1
3037 1950-05-01 Story County Iowa 42.104046 -93.500343 USGS - NPWRC 1
3038 1950-05-01 Van Buren County Iowa 40.700115 -91.909927 USGS - NPWRC 1
3039 1950-05-01 Washington County Iowa 41.347797 -91.753883 USGS - NPWRC 1
3040 1950-05-01 Winneshiek County Iowa 43.236259 -91.909927 USGS - NPWRC 1
3041 1950-05-01 Woodbury County Iowa 42.316616 -95.983261 USGS - NPWRC 1

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