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Species Loxostege munroealis - Beet Webworm Moth - Hodges#5004
Classification Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Pyraloidea (Pyralid and Crambid Snout Moths)
Family Crambidae (Crambid Snout Moths)
Subfamily Pyraustinae
Tribe Pyraustini
Genus Loxostege
Species munroealis (Beet Webworm Moth - Hodges#5004)
Synonyms and other taxonomic changes Loxostege munroealis Leraut, 2005 (1)
Loxostege sticticalis of authors (not Linnaeus, 1761) (2)
Explanation of Names Loxostege munroealis Leraut, 2005, n. sp., Nouv. Rev. Entomol., 22(2): 134. This name applies to the North American species formerly treated as Loxostege sticticalis (Linnaeus, 1761) in Munroe (1976) (3).
Size wingspan 24-29 mm
larvae to 40 mm
Identification Adult: forewing fringe scales black, contrasting with thin yellowish band along outer margin; ground color yellowish-brown with patchwork pattern of light and dark blotches; PM line very wavy, with a pale area distal to the line where it meets the costa; at rest, outline of moth is triangular
Larva: pale green when young, becoming olive-green and then black with age; black dorsal stripe with two pale stripes on either side, and two rows of paired circular marks
Range Manitoba to Texas and westward; sporadic eastward to the New England states
Holotype: "USA, Colombie Britannique, Rutland Bay".
Paratypes: USA: MD, CO; Canada: Riding Mt. Natl. Park, MT, Dunnville, ON.
Habitat fields, gardens, waste places
Season adults from May to September
larvae from June to October
Food larvae feed on wormwood and mugwort (Artemisia spp.), beets, sugarbeets, canola, flax, and spinach
Life Cycle two generations per year; larvae overwinter in soil and pupate within silken cocoons in the soil in late spring; first generation adults emerge in May
See Also Loxostege sticticalis, now considered extralimital to North America, is separated by appreciable differences in larval characteristics, noted by Munroe (1976) (3), and slight differences in wing pattern, genitalia (2) and DNA (4).
Print References Linnaeus, C. 1761. Fauna svecica, (1354): 352. (2)
Powell, J.A. & Opler, P.A., 2009. Moths of Western North America p.174, pl.22.28. (5)
Works Cited 2. | Fauna svecica, sistens animalia Sueciae regni: mammalia, aves, amphibia, pisces, insecta, vermes. Carl Linnaeus . 1761. Stockholmiae, Sumtu & Literis Direct. Laurentii Salvii. Editio Altera Auctior. 1-578. | |
5. | Moths of Western North America Powell and Opler. 2009. UC Press. | |
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