duskywings

genus Erynnis

Member of spread-wing skippers (subfamily Pyrginae)
skippers (family Hesperiidae)
butterflies (superfamily Papilionoidea)
butterflies and moths (order Lepidoptera)
insects (class Insecta)
hexapods (subphylum Hexapoda)
arthropods (phylum Arthropoda)
animals (kingdom Animalia)

Caution: There are other wild species of this genus not yet included in this guide.

propertius duskywing
Erynnis propertius

propertius duskywing
Erynnis propertius

[no more than a dot of white at the tip of the hindwing hairs]

mournful duskywing
Erynnis tristis

mournful duskywing
Erynnis tristis

[white fringe of hairs at the end of the hindwing]

2 observed taxons / 1 key

Chris’s observations: 8 (7 are research grade)

Locations:

Henry Coe SP: 3
Long Ridge OSP
Pleasanton Ridge RP
Russian Ridge OSP
Sierra Azul; OSP
Skyline Ridge OSP

Months:

Mar.: 1
Apr.: 2
May: 2
Jun.: 0
Jul.: 0
Aug.: 1
Sep.: 2

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Taxon info: iNaturalist – BugGuide

Bay Area species: iNaturalist