Acronicta is a genus of noctuid moths containing about 150 species distributed mainly in the temperate Holarctic, with some in adjacent subtropical regions. The genus was erected by Carl Linnaeus in his 1758 10th edition of Systema Naturae. Caterpillars of most Acronicta species are unmistakable, with brightly colored hairy spikes, and often feed quite visibly on common foliate trees. The hairy spikes may contain poison, which cause itchy, painful, swollen rash in humans on contact. The larva of the smeared dagger moth is unusually hairy even for this genus. Acronicta species are generally known as dagger moths, as most have one or more black dagger-shaped markings on their forewing uppersides. But some species have a conspicuous dark ring marking instead.
Acronicta euphorbiae, the sweet gale moth, is a moth of the family Noctuidae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775.
Acronicta americana, the American dagger moth, is a moth of the family Noctuidae. It was originally described by Thaddeus William Harris in 1841 and is native to North America.
Acronicta lanceolaria, the lanceolate dagger moth or pointed dagger, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1875. It is found in North America, from Nova Scotia to British Columbia. It is listed as a species of special concern and believed extirpated in the US state of Connecticut.
Acronicta lobeliae, the lobelia dagger moth or greater oak dagger moth, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found in North America.
Acronicta oblinita, the smeared dagger moth or arioch dagger, is a moth of the family Noctuidae. The species was first described by James Edward Smith in 1797. It is found in eastern North America, from Nova Scotia west across Canada to British Columbia, north to Lake Athabasca and south to Florida and Texas.
Acronicta tritona, the Triton dagger moth, is a moth of the family Noctuidae. The species was first described by Jacob Hübner in 1818. It is found in eastern North America, from Nova Scotia west to north-eastern Alberta, south to Florida and Texas, and west to Oregon.
Acronicta lepusculina, the cottonwood dagger moth, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found in most of eastern North America, west through southern Canada to Vancouver Island and southward.
Acronicta sperata, the hopeful dagger moth, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1873. It is found in North America from New Brunswick west to the Alberta foothills, south to the District of Columbia, Missouri and in the mountains to Colorado.
Acronicta dactylina, the fingered dagger moth or alder dagger, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1874. It is found from Newfoundland west to the Pacific coast and Vancouver Island and Haida Gwaii, British Columbia, south to North Carolina and Colorado.
Acronicta grisea, the gray dagger, is a moth of the family Noctuidae. The species was first described by Francis Walker in 1856. It is found from the Atlantic to the Pacific coast in southern Canada and the northern United States.
Acronicta hasta, the forked dagger moth, speared dagger moth, cherry dagger moth or dart dagger moth, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found in North America in the eastern deciduous woodlands, ranging west across southern Saskatchewan and Alberta into central southern British Columbia, south to Tennessee, Wisconsin and Kansas.
Acronicta impressa, the impressive dagger moth or willow dagger moth, is a moth of the family Noctuidae. The species was first described by Francis Walker in 1856. It is found from western Canada to north-western Mexico.
Acronicta interrupta, the interrupted dagger moth, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found across southern Canada south of the boreal forest, from New Brunswick west to eastern Alberta, south to Georgia, Nebraska and Arizona.
Acronicta longa, the long-winged dagger moth, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found across much of North America, with Nova Scotia, Alberta, Florida, and Texas within is range.
Acronicta quadrata, the quadrate dagger moth, is a moth of the family Noctuidae. The species was first described by Smith in 1908. In Canada, it occurs across the wooded area north to the southern edge of the boreal forest. It extends from western Quebec, west to the Rocky Mountains in Alberta and north-western British Columbia. It is widespread in the western parts of the United States.
Acronicta radcliffei, or Radcliffe's dagger moth, is a moth of the family Noctuidae. The species was first described by Leon F. Harvey in 1875. It is found in eastern and southern North America.
Acronicta vulpina, the vulpina dagger moth or miller dagger moth, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1883. It is found in North America from New York and Newfoundland west to central British Columbia, south to Colorado.
Acronicta hamamelis, the witch hazel dagger moth or puzzling dagger moth, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found in Canada and parts of the United States, including Maryland.
Acronicta inclara, the unclear dagger moth, is a moth of the family Noctuidae. The species was first described by John Bernhardt Smith in 1900. It is found in north-eastern North America.
