Juvenal’s Duskywing

Place name abbreviations: MPEA – Middle Patuxent Environment Area; PRSP – Patuxent River State Park; PVSP – Patapsco River Valley State Park.

Click on the common name to obtain additional information from the Butterflies and Moths of North America web page and the following common name for additional information from USGS web page. BugGuide is another web resource.

Legend:

Common name [Link is to BAMONA] (wingspan range in inches)
Common name [link is to USGS]
Occurrence level & flight period.
Habitat. Typically visits (for nectaring). Larval host plants.

 

Juvenal’s Duskywing (1.25–1.9″)
[Juvenal’s Duskywing]
Common: M-Apr to L-May Woods trails & edges Mud puddles Red oaks, white oaks

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April 7, 2012
Wincopin Trail
Annette Allor

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April 18, 2008
Long Corner (PRSP)
Sue Earp

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Hind wing—ventral view
April 18, 2008
Long Corner (PRSP)
Sue Earp

High Ridge

Hind wing—ventral view
May 14, 2018
Woodbine
Linda Hunt

Waterford Flats
April 18, 2021
Bill ;Hill

Hind wing—ventral view
April 20, 2021
Waterford Flats
Bill Hill

Juvenal’s has a single brood in the spring and is not seen after the end of May.

Note the two spots on the underside of the hindwing near the edge in the third and fourth photos. 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 and cannot be distinguished from that angle.

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April 24, 2013
Savage Mill Trail
Jo Solem

Western Regional Park

April 28, 2017
Western Regional Park
Bill Hill

Woodbine

Female
May 1, 2018
High Ridge Park
Linda Hunt

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Female
May 5, 2014
Daniels PVSP
Bonnie Ott

Trinity Cemetary
May 3, 2020
Kevin Heffernan

May 3, 2020
Trinity Cemetary
Kevin Heffernan
(In different view, two ventral spots seen but not photographed.)

Individuals seen in each 10-day period to date during the butterfly survey

The phenograms show the maximum number of individual butterflies of this species seen in the first eight years of the Howard County Butterfly Survey. From these graphs, one can see the number of broods of each species, when they are active, and the relative abundance of the species in each brood. The observed early and late dates are shown below The graphs can be used to anticipate the first sighting of a given species in the year and can help with identification.

Early: 4/2/2016 Late: 5/18/2014