Conservation Status
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A common, widespread species. No concerns.
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Cyclicity
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Adults on the wing late May through July, larvae June through September.
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Distribution
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Transcontinental across southern Canada, except for the lower mainland of BC and Vancouver Island, south to North Carolina, Nebraska and California. In Alberta, occurs throughout the aspen parklands, the foothills and mountains and the boreal forest north to at least the Ft. McMurray and northern Peace River areas. There are a number of closely related species in the Palearctic region.
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General Description
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A rather large (4.3-6.2 cm. wingspan) mostly dark black-brown and white moth. The forewing is white with a dark strip along the costa, widening near the apex, and along the entire lower margin. Hindwing white with a dark blotch in the anal angle. Some specimens, especially from the mountains, have most of the white on the forwing replaced with pale brown, and these greatly resemble P. portlandia from coastal BC. The two species are not known to occur together, with portlandia replacing rimosa on Vancouver Island and the lower mainland of BC. Both sexes are similar, but females are bit larger, darker and with a narrower antennae.
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Habitat
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Deciduous and mixedwood forest and shrublands.
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Life Cycle
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Adults are nocturnal and come to light. Fresh adults may be taken late in the season, indicating a very extended emergence, or more likely at least a partial second generation per year. Overwinters as a pupa. The larvae are solitary defoliators of deciduous trees. They have an anal horn and resemble small sphinx larvae.
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Trophic Strategy
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No specific Alberta data. Elsewhere in Canada, poplars (especially aspen poplar) and willows (Populus and Salix).
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Pheosia rimosa
provided by wikipedia EN
Pheosia rimosa, the black-rimmed prominent moth, fissured prominent or false-sphinx, is a moth of the family Notodontidae. The species was first described by Alpheus Spring Packard in 1864.[1][2] It is found from coast to coast in North America, although it is less common in the south-eastern United States.[3]
The wingspan is 43–62 mm. Adults are dark black-brown and white. The forewings are white with a dark strip along the costa and along the entire lower margin. The hindwings are white with a dark blotch in the anal angle.[4] Adults are on wing from spring to fall.
The larvae feed on the leaves of Populus and Salix species. They resemble young hornworm larvae of the family Sphingidae. The color is variable and can be yellow, lavender, pink, green, brown or nearly black. Full-grown larvae can reach a length of about 45 mm. The species overwinters in the pupal stage.
Subspecies
- Pheosia rimosa rimosa
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Pheosia rimosa taiwanognoma Nakamura, 1973 (Taiwan)
Taxonomy
Pheosia portlandia was previously treated as a distinct species, replacing P. rimosa in Pacific coastal forests. Research has concluded that Pheosia portlandia is a synonym of P. rimosa.
References
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^ Savela, Markku. "Pheosia rimosa Packard, 1864". Lepidoptera and Some Other Life Forms. Retrieved January 14, 2018.
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^ "930012.00 – 7922 – Pheosia rimosa – Black-rimmed Prominent – Packard, 1864". North American Moth Photographers Group. Mississippi State University. Retrieved November 11, 2020.
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^ McLeod, Robin (August 24, 2013). "Species Pheosia rimosa - Black-rimmed Prominent - Hodges#7922". BugGuide. Retrieved November 11, 2020.
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^ Robinson, E. & Anweiler, G. G. "Species Details Pheosia rimosa". University of Alberta Museums. E.H. Strickland Entomological Museum. Retrieved November 11, 2020.
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Pheosia rimosa: Brief Summary
provided by wikipedia EN
Pheosia rimosa, the black-rimmed prominent moth, fissured prominent or false-sphinx, is a moth of the family Notodontidae. The species was first described by Alpheus Spring Packard in 1864. It is found from coast to coast in North America, although it is less common in the south-eastern United States.
The wingspan is 43–62 mm. Adults are dark black-brown and white. The forewings are white with a dark strip along the costa and along the entire lower margin. The hindwings are white with a dark blotch in the anal angle. Adults are on wing from spring to fall.
The larvae feed on the leaves of Populus and Salix species. They resemble young hornworm larvae of the family Sphingidae. The color is variable and can be yellow, lavender, pink, green, brown or nearly black. Full-grown larvae can reach a length of about 45 mm. The species overwinters in the pupal stage.
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