''Lacinipolia acutipennis'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

in the family

Noctuidae The Noctuidae, commonly known as owlet moths, cutworms or armyworms, are a family of moths. They are considered the most controversial family in the superfamily Noctuoidea because many of the clades are constantly changing, along with the other f ...

. It is common throughout xeric, low elevation habitats of western

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

. The core range includes the dry, western portions of the Great Plains, the Great Basin, and the western intermontane valleys north of the Sonoran zone, from southern

Saskatchewan Saskatchewan ( ; ) is a Provinces and territories of Canada, province in Western Canada, western Canada, bordered on the west by Alberta, on the north by the Northwest Territories, on the east by Manitoba, to the northeast by Nunavut, and on t ...

and

Alberta Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Ter ...

southward to northern

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

and

New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ker ...

. Adults are similar to ''

Lacinipolia pensilis ''Lacinipolia pensilis'' is a moth in the family Noctuidae. It is found in the western cordilleran region from central British Columbia and western Alberta southward to at least Washington and central Utah Utah ( , ) is a state in the ...

'', but the forewings are more acute and smaller. Also, the brown tones of the medial forewing are more muted giving an overall lower contrast in tone of the medial area with the grey-black antemedial and postmedial areas. The white spot in the anal angle is often more prominent, particularly in females and the forewing apex has a more contrastingly pale diffuse area that usually extends farther towards the reniform. Adults have been recorded on wing from mid-August to late September. The larvae are probably general feeders and may ascend shrubs to feed.Revision of the Lacinipolia vicina (Grote) complex (Noctuidae, Noctuinae, Eriopygini)
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References

Moths described in 1874 Eriopygini Moths of North America {{Eriopygini-stub