''Enargia fausta'' is a

moth Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...

of the family

Noctuidae The Noctuidae, commonly known as owlet moths, cutworms or armyworms, are a family (biology), family of moths. Taxonomically, they are considered the most controversial family in the superfamily Noctuoidea because many of the clades are constantly ...

. It is restricted to the boreal forest and boreal-deciduous forest transition zone, and (unlike ''E. infumata'') does not range south along the

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in great-circle distance, straight-line distance from the northernmost part of Western Can ...

nor as far north. Specimens examined range from central

Alberta Alberta is a Provinces and territories of Canada, province in Canada. It is a part of Western Canada and is one of the three Canadian Prairies, prairie provinces. Alberta is bordered by British Columbia to its west, Saskatchewan to its east, t ...

New Brunswick New Brunswick is a Provinces and Territories of Canada, province of Canada, bordering Quebec to the north, Nova Scotia to the east, the Gulf of Saint Lawrence to the northeast, the Bay of Fundy to the southeast, and the U.S. state of Maine to ...

and in the East as far south as the Ottawa River Valley, but the species presumably also occurs in appropriate habitats in northern

New York New York most commonly refers to: * New York (state), a state in the northeastern United States * New York City, the most populous city in the United States, located in the state of New York New York may also refer to: Places United Kingdom * ...

and

New England New England is a region consisting of six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York (state), New York to the west and by the ...

. Ferguson (1954) illustrates a specimen from Glennville,

Nova Scotia Nova Scotia is a Provinces and territories of Canada, province of Canada, located on its east coast. It is one of the three Maritime Canada, Maritime provinces and Population of Canada by province and territory, most populous province in Atlan ...

. Reports of this species from north-eastern

Ohio Ohio ( ) is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the ...

(Rings et al. 1992, as ''E. infumata'') need to be verified. It is similar to, and was long confused with '' Enargia infumata''. The length of the forewings is 17.5 mm for males. Adults are on wing from late July to early September with most records after mid-August.. Larvae have been recorded on ''

Betula papyrifera A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech- oak family Fagaceae. The genus ''Betula'' contain ...

'', ''

Populus tremuloides ''Populus tremuloides'' is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name aspen. It is commonly called quaking aspen,

'' and ''

Populus balsamifera ''Populus balsamifera'', commonly called balsam poplar, bam, bamtree, eastern balsam-poplar, hackmatack, tacamahac poplar, tacamahaca, is a tree species in the balsam poplar species group in the poplar genus, ''Populus.'' The genus name ''Populus ...

''.

Etymology

The specific epithet is derived from Faustus, or

Faust Faust ( , ) is the protagonist of a classic German folklore, German legend based on the historical Johann Georg Faust (). The erudite Faust is highly successful yet dissatisfied with his life, which leads him to make a deal with the Devil at a ...

, the alchemist of

German German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

legend who sold his soul to

Mephistopheles Mephistopheles ( , ), also known as Mephostophilis or Mephisto, is a demon featured in German folklore, originating as the chief devil in the Faust legend. He has since become a stock character appearing in Mephistopheles in the arts and popular ...

, or Mephisto, in exchange for knowledge. The ending is amended for a more euphonious combination with Enargia, and is a noun in apposition.

External links

Review of the Nearctic species of Enargia Hübner, 1821 (Noctuidae, Noctuinae, Xylenini)
Caradrinini Moths described in 2010 {{Caradrinini-stub