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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.
UASM12658 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Pocahontas
Collected ByBowman, K.
Date Collected1916-08-14
UASM12643 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Red Deer
Collected ByBowman, K.
Date Collected1923-05-15
UASM12663 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Date Collected1924-06-26
UASM12632 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Fort Macleod
Collected ByFreigang, B.
Date Collected1957-06-07
UASM12661 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Red Deer
Date Collected1923-05-15
UASM12667 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Red Deer
Date Collected1915-05-07
UASM2303 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Tolman Bridge Recreational Area
Collected ByAnweiler, G. G.
Date Collected2001-08-04
UASM24103 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Wainwright Dunes Ecological Reserve
Collected ByAnweiler, G. G.
Date Collected2002-07-13
UASM35933 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bragg Creek
Collected ByPike, E. M.
Date Collected1972-07-16
UASM35927 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Cypress Hills Provincial Park
Collected ByPike, E. M.
Date Collected2000-07-06/2000-07-08
UASM35953 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Drumheller
Collected ByPike, E. M.
Date Collected1988-06-26
UASM35929 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Drumheller
Collected ByPike, E. M.
Date Collected1987-06-10
UASM35928 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dunvegan
Collected ByPike, E. M.
Date Collected1984-06-19
UASM35934 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Fairview
Collected ByPike, E. M.
Date Collected1980-06-14
UASM35930 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Fairview
Collected ByPike, E. M.
Date Collected1982-05-27
UASM43149 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Redwater
Collected ByLawrie, D.
Date Collected1998-07-10
UASM43150 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Redwater
Collected ByLawrie, D.
Date Collected1998-07-10
UASM43151 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Redwater
Collected ByLawrie, D.
Date Collected1998-07-10
UASM43152 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Redwater
Collected ByLawrie, D.
Date Collected1998-07-10
UASM43153 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Redwater
Collected ByLawrie, D.
Date Collected1998-07-10
UASM19848 - Grammia williamsii
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Redwater
Collected ByLawrie, D.
Date Collected1998-07-10