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Species Details
Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
Common NameWilliams' Tiger
SeasonalityJune to late July.
IdentificationOne of the smallest members of the genus, with an average forewing length of ~17mm. The white forewing markings consist of the typical "W" mark, with two additional transverse lines (sometimes reduced). Note lack of fine white lines alongforewing veins. Hindwing color can vary from pink to yellow; boreal and prairie populations tend to have a dull yellowish hindwing.
Scientific Name
Grammia williamsii
Common Name
Williams' Tiger
Habitat
Found in montane grasslands, open jack pine forests and prairie habitats.
Seasonality
June to late July.
Identification
One of the smallest members of the genus, with an average forewing length of ~17mm. The white forewing markings consist of the typical "W" mark, with two additional transverse lines (sometimes reduced). Note lack of…
One of the smallest members of the genus, with an average forewing length of ~17mm. The white forewing markings consist of the typical "W" mark, with two additional transverse lines (sometimes reduced). Note lack of fine white lines alongforewing veins. Hindwing color can vary from pink to yellow; boreal and prairie populations tend to have a dull yellowish hindwing.
Life History
No information available.
Conservation
Common.
Diet Info
Probably a variety of herbaceous plants. In prairie habitats, larvae can be common on Golden Bean (Thermopsis rhombifolia) in May. Larvae have also been observed on Senecio sp. in montane meadows.
Range
New Brunswick to Alberta, B.C. and N.W.T., south to Arizona.
Citation
Page Citation for Grammia williamsii
Page Citation
"Species Details - Grammia williamsii, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-243/9-2700. Accessed 20 Dec. 2024.
References
Author
Schmidt, B. C.
Title
The tiger moths (Arctiidae) of Alberta.
Publication Date
2000
Pages
36
Specimen Information
There are 315 specimens of this Species.
UASM78160 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Birch Mountains Wildland Provincial Park, Gardiner Lakes
Collected ByMacaulay, D. A.; Macaulay, S. H.
Date Collected2004-07-09
UASM57280 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Taber
Collected ByAnweiler, G. G.
Date Collected2004-06-21
UASM77849 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton National Park
Collected ByAnweiler, G. G.
Date Collected2005-07-07
CBCC1099 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Waterton Lakes National Park
Collected ByChristensen, C. B.
Date Collected2005-07-08
UASM77947 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Buffalo
Collected ByAnweiler, G. G.
Date Collected2005-06-16
BIRD15355 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dry Island Buffalo Jump Provincial Park
Collected ByBird, C. D.
Date Collected2005-06-21
BIRD15356 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dry Island Buffalo Jump Provincial Park
Collected ByBird, C. D.
Date Collected2005-06-21
BIRD15357 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dry Island Buffalo Jump Provincial Park
Collected ByBird, C. D.
Date Collected2005-06-21
BIRD15358 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Big Knife Provincial Park
Collected ByBird, C. D.
Date Collected2005-06-29
BIRD15359 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Big Knife Provincial Park
Collected ByBird, C. D.
Date Collected2005-06-29
UASM57448 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Onefour
Collected ByAnweiler, G. G.
Date Collected2005-05-20/2005-05-21
UASM57449 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Onefour
Collected ByAnweiler, G. G.
Date Collected2005-05-20/2005-05-21
BIRD17918 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dry Island Buffalo Jump Provincial Park
Collected ByBird, C. D.
Date Collected2006-06-12
BIRD17919 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Arrowwood
Collected ByBird, C. D.
Date Collected2006-06-17
BIRD17920 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Stettler
Collected ByBird, C. D.
Date Collected2006-06-28
BIRD17921 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Big Knife Provincial Park
Collected ByBird, C. D.
Date Collected2006-07-04
BIRD20765 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Stettler
Collected ByBird, C. D.
Date Collected2007-06-26
BIRD20766 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dry Island Buffalo Jump Provincial Park
Collected ByBird, C. D.
Date Collected2007-07-04
BIRD20767 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dry Island Buffalo Jump Provincial Park
Collected ByBird, C. D.
Date Collected2007-07-04
BIRD22052 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Lowden Springs Conservation Area
Collected ByBird, C. D.
Date Collected2008-06-28
JD2419 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Jasper
Collected ByDombroskie, J. J.
Date Collected2007-06-02