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Species Erynnis tristis - Mournful Duskywing

Mournful Duskywing for California in October - Erynnis tristis - male Mournful Duskywing for California in November - Erynnis tristis - female Erynnis on Statice - Erynnis tristis - male Mournful duskywing is likely to feed upright - Erynnis tristis - female Mostly black skipper - Erynnis tristis - male I believe this is a Mournful Duskywing, but I would appreciate confirmation. - Erynnis tristis Duskywings sp. ? - Erynnis tristis Texas Duskywing - Erynnis tristis
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 Papilionoidea (Butterflies and Skippers)
Family Hesperiidae (Skippers)
Subfamily Pyrginae (Spread-wing Skippers)
Genus Erynnis (Duskywings)
Species tristis (Mournful Duskywing)
Synonyms and other taxonomic changes
First described in 1852 by Jean Baptiste Boisduval as Thanaos tristis
Explanation of Names
tristis is Latin for "sad, sorrowful, mournful"- probably referring to the somber colors of the wings
Numbers
Butterflies of America lists 3 subspecies:
tristis (Boisduval, 1852)
tatius (W. H. Edwards, 1883)
pattersoni Burns, 1964 ***Probably not found in our area
Food
The caterpillars feed on various native oak species
Internet References
Annales de la Société entomologique de France, ser. 2, v. 10, p.311    Boisduval's original description of the species