Erynnis martialis

Erynnis martialis, the mottled duskywing, is a butterfly of the family Hesperiidae. It is found in most of the eastern United States and in southern Ontario, and southeastern Manitoba.[1] It is listed as a species of special concern and believed extirpated in the US state of Connecticut.[2]

Mottled duskywing
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Hesperiidae
Tribe:
Erynnini
Genus:
Erynnis
Species:
E. martialis
Binomial name
Erynnis martialis
(Scudder, 1869)
Synonyms
  • Nisoniades martialis Scudder, 1869
  • Thanaos quercus Butler, 1870
  • Nisoniades ausonius Lintner, 1872

The wingspan is 25–29 mm. There can be two generations from mid-May to late August.[3]

The larvae feed on wild lilacs including New Jersey tea (Ceanothus americanus) and redroot (Ceanothus herbaceus) in the buckthorn family (Rhamnaceae). Adults feed on nectar from flowers of Bush houstonia, Gromwell, Verbena stricta and other plants.[4]

References
  1. COSEWIC. 2012. COSEWIC Assessment and Status Report on the Mottled Duskywing Erynnis martialis in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. xiv+35 pp. Consulted on February 13th, 2018.
  2. "Connecticut's Endangered, Threatened and Special Concern Species 2015". State of Connecticut Department of Energy and Environmental Protection Bureau of Natural Resources. Retrieved January 27, 2018.
  3. Mottled Duskywing, Butterflies of Canada
  4. https://www.butterfliesandmoths.org/species/Erynnis-martialis


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