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Species Erynnis persius - Persius Duskywing

Persius Duskywing - Erynnis persius - female Persius Duskywing - Erynnis persius - female Persius Duskywing - Erynnis persius - male Spreadwing  - Erynnis persius - female Spreadwing - Which one - Erynnis persius - female Persius duskywing - Erynnis persius - female Rocky Mountain Duskywing? - Erynnis persius - male Erynnis persius
Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Hesperioidea (Skippers)
Family Hesperiidae (Skippers)
Subfamily Pyrginae (Spread-wing Skippers)
Genus Erynnis (Duskywings)
Species persius (Persius Duskywing)
Synonyms and other taxonomic changes
Erynnis persius (Scudder, 1863)
Size
WS ≈ 29–42mm  a
FWL ≈ 11-15mm b
Identification
Adult: Upperside is brown-black. FW has few clear dots and very dim markings; patch at end of FW cell is grayish. Male FW has many raised white hairs. HW fringes are dark. Male has a costal fold containing yellow scent scales; female has a patch of scent scales on the 7th abdominal segment. a
Habitat
Open areas including mountain grasslands, marshes, sand plains, seeps and stream sides. a
Season
One brood from April-June.
Food
Adult: Flower nectar.
Larva: Preferred host plant: Lupinus perennis, also wild indigo. In the West it feeds on other members of the Fabaceae family
Life Cycle
During the day males perch on hilltops to seek females, usually sitting on the ground or on low twigs. Females lay eggs singly under leaves of the host plants. Caterpillars feed on leaves and live in shelters of rolled or tied leaves. Fully-grown caterpillars hibernate. a
Remarks
The eastern subspecies of the Persius Duskywing is now rare throughout its range primarily because of destruction of the specialized habitat of its larval host plants. b
See Also
Erynnis lucilius           Erynnis baptisiae           Erynnis persius

Columbine (E. lucilius), Wild Indigo (E. baptisiae) and Persius (E. persius) Duskywings belong to the "Persius complex," a confusing group of very similar skippers. a
Internet References
Xerces Society - description of subspecies Erynnis persius persius
Minnesota Department of Natural Resources - detailed description, including range