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 increta, the raspberry bud dagger moth, raspberry bud moth or peach sword stripe night moth, is a moth of the family Noctuidae. The species was first described by Herbert Knowles Morrison in 1875. It is distributed throughout the south of Canada and the United States down to Florida and Texas.
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. Its larva, the smartweed caterpillar, has urticating hairs. The species was first described by James Edward Smith in 1797.
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, commonly known as the cottonwood dagger moth, is a species of moth in 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 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 innotata, the unmarked dagger moth or birch dagger, is a moth of the family Noctuidae. The species was first described by Achille Guenée in 1852. It is found from Newfoundland to British Columbia and adjacent northern states in the United States, south in the east to North Carolina and Kentucky.
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 mansueta, the gentle dagger moth, is a moth of the family Noctuidae. The species was first described by Smith in 1897. It was considered a synonym of Acronicta falcula, but was reinstated as a valid species in 2011. It is widespread in western North America, from southern Saskatchewan west to southern British Columbia, and south to at least Colorado and California.
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 hastulifera, the frosted dagger moth, is a moth of the family Noctuidae. The species was first described by James Edward Smith in 1797. It is found in the north-eastern United States as far south as Virginia, North Carolina, South Carolina and Georgia.
Acronicta heitzmani, or Heitzman's dagger moth, is a moth of the family Noctuidae. The species was first described by Charles V. Covell and Eric H. Metzler in 1992. It is found in Missouri, Arkansas, Illinois and Ohio.
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.
Acronicta falcula, the corylus dagger moth, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1877. It is found in the United States and Canada from southern New England to southern Manitoba and Iowa. Recently seen from Wisconsin, Connecticut, Rhode Island, New York and Michigan. It is reported as rare in Ohio. It is listed as a species of special concern in the US state of Connecticut.
Acronicta lupini, the lupine dagger or little bear, is a moth of the family Noctuidae. The species was first described by Augustus Radcliffe Grote in 1873. It is found from Quebec, Newfoundland and Labrador, British Columbia, Alberta and Yukon in Canada, south to California.
Acronicta insita, the large gray dagger or fingered 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.
