Common NameWhite-banded Toothed CarpetIdentificationA medium-small size (wingspan 2-2.5 cm) broad-winged dull charcoal and white moth. Forewings dull black or dark grey, crossed by a doubled white antemedian and prominent white postmedian band, the later with a faint grey line splitting it in two. Terminal areas grey, with upper half broader and darker, divided by a scalloped white line. Forewing discal spot a small black oval. Hindwings lighter grey, crossed by a series of obscure pale wavy lines, the white postmedian band wider and more prominent. Sexes similar; antennae in both sexes densely and finely ciliate. The smaller black and white E. sperryi is more crisply marked. Most similar to Euphyia intermedia, but greyer and with blurrier markings, not as crisp as in intermedia. The subterminal dark patch of E. intermedia is usually broken by a white streak just below the apex, but is not so divided in alternata. E. alternata also have patches of cinnamon hairs in the outer part of the dark patch on the upper forewing submargin, visible under magnification; these are lacking in E. intermedia.
Scientific NameEpirrhoe alternataCommon Name
White-banded Toothed Carpet
HabitatE. alternata frequents open woods, edges and meadows.
Identification
A medium-small size (wingspan 2-2.5 cm) broad-winged dull charcoal and white moth. Forewings dull black or dark grey, crossed by a doubled white antemedian and prominent white postmedian band, the later with a faint…
A medium-small size (wingspan 2-2.5 cm) broad-winged dull charcoal and white moth. Forewings dull black or dark grey, crossed by a doubled white antemedian and prominent white postmedian band, the later with a faint grey line splitting it in two. Terminal areas grey, with upper half broader and darker, divided by a scalloped white line. Forewing discal spot a small black oval. Hindwings lighter grey, crossed by a series of obscure pale wavy lines, the white postmedian band wider and more prominent. Sexes similar; antennae in both sexes densely and finely ciliate. The smaller black and white E. sperryi is more crisply marked. Most similar to Euphyia intermedia, but greyer and with blurrier markings, not as crisp as in intermedia. The subterminal dark patch of E. intermedia is usually broken by a white streak just below the apex, but is not so divided in alternata. E. alternata also have patches of cinnamon hairs in the outer part of the dark patch on the upper forewing submargin, visible under magnification; these are lacking in E. intermedia.
Life History
Adults are nocturnal and come to light. There is a single annual brood, with adults from late May through early August, peaking in early July.
Diet Info
Larvae feed on species of bedstraw (Galium).
Range
Holarctic; in North America found throughout much of the wooded parts of Canada, north to YT and NWT, south in the east to WV. In Alberta widespread and fairly common in the southern Boreal forest and Parklands…
Holarctic; in North America found throughout much of the wooded parts of Canada, north to YT and NWT, south in the east to WV. In Alberta widespread and fairly common in the southern Boreal forest and Parklands regions, rare in the mountains.
Notes
Also known as the Striped Carpet (Jones, 1951). The illustrated adult is from Dry Island P.P.
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Citation
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Page Citation for Epirrhoe alternata
Page Citation
"Species Details - Epirrhoe alternata, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6163. Accessed 28 Jun. 2022.