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Species Details
Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
Common NameGrey Amphipyra
SeasonalityAdults are on the wing in Alberta from early-mid August through early September.
IdentificationA medium-size (3.3-4.0 cm wingspan) light ash or buff-grey moth. The forewing is powdery grey, with the antemedian line, orbicular spot and reniform spots all reduced to a few dark dots. The postmedian line is better marked, and consists of a sinuous line of dark spots. The subterminal line is a straight line of dark grey dots at the veins, and forms the boundary between the grey forewing and the contrasting pale grey or buff terminal area. The hindwings are light grey, darkening toward the margin. The antennae are simple, and the sexes are alike. The sharply contrasting pale terminal area
on the grey forewings will separate glabella from other the moths found in southern Alberta in late summer and fall.
Scientific Name
Amphipyra glabella
Common Name
Grey Amphipyra
Habitat
Dry deciduous woodland
Seasonality
Adults are on the wing in Alberta from early-mid August through early September.
Identification
A medium-size (3.3-4.0 cm wingspan) light ash or buff-grey moth. The forewing is powdery grey, with the antemedian line, orbicular spot and reniform spots all reduced to a few dark dots. The postmedian line is better…
A medium-size (3.3-4.0 cm wingspan) light ash or buff-grey moth. The forewing is powdery grey, with the antemedian line, orbicular spot and reniform spots all reduced to a few dark dots. The postmedian line is better marked, and consists of a sinuous line of dark spots. The subterminal line is a straight line of dark grey dots at the veins, and forms the boundary between the grey forewing and the contrasting pale grey or buff terminal area. The hindwings are light grey, darkening toward the margin. The antennae are simple, and the sexes are alike. The sharply contrasting pale terminal area
on the grey forewings will separate glabella from other the moths found in southern Alberta in late summer and fall.
Life History
There is a single annual brood, with adults emerging in late summer. The probable overwintering stage is the egg. Adults come readily to both sugar bait and to light.
Conservation
A locally common, widespread species; no concerns.
Diet Info
No Alberta data; elsewhere in Canada reported from Balsam poplar (Populus balsamifera) and Douglas fir (Pseudotsuga taxifolia) (one record for each; Prentice, 1962).
Range
New York and Quebec west to southern BC, south to Georgia and Colorado. In Alberta, apparently confined to wooded areas along the river valleys on the plains, north at least to the Red Deer River at Tolman Bridge.
Citation
Page Citation for Amphipyra glabella
Page Citation
"Species Details - Amphipyra glabella, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-2326/9-20303. Accessed 10 Feb. 2025.
References
Author
Prentice, R. M.
Title
Forest Lepidoptera of Canada. (1962)
Publication Date
1962
Volume
2
Pages
281
Author
Forbes, William T. M.
Title
Lepidoptera of New York & neighbouring states : Part 3
Publication Date
1954
Series Title
Cornell University Agricultural Experiment Station. Memoir
Specimen Information
There are 24 specimens of this Species.
UASM15311 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByBowman, K.
Date Collected1922-08-22
UASM15328 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByBowman, K.
Date Collected1922-08-21
UASM15329 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected BySeamans, H. L.
Date Collected1922-07-28
UASM15332 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByStrickland, Edgar H.
Date Collected1921-07-30
UASM15333 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByStrickland, Edgar H.
Date Collected1925-07-22
UASM15338 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected BySeamans, H. L.
Date Collected1922-08-21
UASM15340 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByBowman, K.
Date Collected1922-08-21
UASM15341 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected BySeamans, H. L.
Date Collected1922-08-21
UASM15342 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected BySeamans, H. L.
Date Collected1920-08-31
UASM15343 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByBowman, K.
Date Collected1922-08-21
UASM15344 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByBowman, K.
Date Collected1922-08-21
UASM15345 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByMackie, Donald
Date Collected1922-08-21
UASM15349 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByBowman, K.
Date Collected1922-08-21
UASM15350 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected ByBowman, K.
Date Collected1926-08-21
UASM15348 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lethbridge
Collected BySeamans, H. L.
Date Collected1922-07-28
UASM2460 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Tolman Bridge Recreational Area
Collected ByAnweiler, G. G.
Date Collected2001-08-05
UASM34534 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dinosaur Provincial Park
Collected ByAnweiler, G. G.
Date Collected1996-08-19
UASM24955 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Red Deer River
Collected ByLawrie, D.
Date Collected1997-08-30
UASM58304 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Writing-On-Stone Provincial Park
Collected ByAnweiler, G. G.; Troubridge, J.
Date Collected1999-09-08
UASM150210 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dinosaur Provincial Park
Collected ByTroubridge, J.; Anweiler, G.
Date Collected2001-08-14/2001-08-15
UASM150211 - Amphipyra glabella
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Saskatchewan, Great Sand Hills
Collected ByTroubridge, J.; Lafontaine
Date Collected2003-07-29