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Species Details
Clostera brucei
University of Alberta E.H. Strickland Entomological Museum Read more about this collection »
Common NameBruce's Chocolate-tip
SeasonalityAdults are on the wing from May through early July.
IdentificationA small (2.5-3.0 cm wingspan) dark grey-brown moth, darker and less contrastingly marked than the other Clostera species. It is most easily confused with small, dark specimens of C. apicalis. C. apicalis hase rusty-red or dark orange along the upper section of the postmedian line on the forewing; this is greatly reduced or absent in brucei. Clostera strigosa is larger with pale yellow mottling in the apical area, and C. albosigma has the dark terminal part of the forewing sharply divided from the remainder of the wing. Male antennae bipectinate; sexes similar.
Scientific Name
Clostera brucei
Common Name
Bruce's Chocolate-tip
Habitat
Mature deciduous and mixedwood forest.
Seasonality
Adults are on the wing from May through early July.
Identification
A small (2.5-3.0 cm wingspan) dark grey-brown moth, darker and less contrastingly marked than the other Clostera species. It is most easily confused with small, dark specimens of C. apicalis. C. apicalis hase…
A small (2.5-3.0 cm wingspan) dark grey-brown moth, darker and less contrastingly marked than the other Clostera species. It is most easily confused with small, dark specimens of C. apicalis. C. apicalis hase rusty-red or dark orange along the upper section of the postmedian line on the forewing; this is greatly reduced or absent in brucei. Clostera strigosa is larger with pale yellow mottling in the apical area, and C. albosigma has the dark terminal part of the forewing sharply divided from the remainder of the wing. Male antennae bipectinate; sexes similar.
Life History
The adults are nocturnal and come to light. The larvae are reported to be both solitary and gregarious leaf-folding defoliators. There is a single brood each year.
Conservation
Uncommon to locally common and widespread; no concerns.
Diet Info
No specific Alberta data; elsewhere in Canada (including Alberta) Trembling aspen (Populus tremuloides), willow (Salix sp.) and Balsam poplar (Populus balsamifera).
Range
Across southern Canada, from Quebec to coastal British Columbia, north to Yukon and south to New Jersey and California. In Alberta found mainly in the southern Boreal forest and foothills areas, but also present in…
Across southern Canada, from Quebec to coastal British Columbia, north to Yukon and south to New Jersey and California. In Alberta found mainly in the southern Boreal forest and foothills areas, but also present in the aspen parklands.
Citation
Page Citation for Clostera brucei
Page Citation
"Species Details - Clostera brucei, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-2147/9-302297. Accessed 21 Dec. 2024.
References
Author
Prentice, R. M.
Title
Forest Lepidoptera of Canada. (1962)
Publication Date
1962
Volume
2
Pages
281
Author
Handfield, L.
Title
Le guide des papillons du Quebec.
Publication Date
1999
Pages
536
Author
Forbes, William T. M.
Title
Lepidoptera of New York & neighbouring states : Part 2
Publication Date
1948
Series Title
Cornell University Agricultural Experiment Station. Memoir
Pages
263
Specimen Information
There are 88 specimens of this Species.
UASM2222 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Dutch Creek Recreation Area
Collected ByAnweiler, G. G.
Date Collected1999-06-17
UASM2218 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Red Deer
Collected ByCrosby, G. C. S.
Date Collected1923-06-20
UASM2088 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByBowman, K.
Date Collected1932-05-21
UASM2121 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByBowman, K.
Date Collected1929-06-06
UASM2122 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Date Collected1920-07-02
UASM2123 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByBowman, K.
Date Collected1921-06-16
UASM2124 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Date Collected1918-06-14
UASM2125 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Collected ByBowman, K.
Date Collected1937-06-17
UASM2138 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Pocahontas
Collected ByBowman, K.
Date Collected1916-05-22
UASM2139 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Red Deer
Collected ByWhitehouse, F. C.
Date Collected1918-05-26
UASM2142 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Caroline
Collected ByFuller, E.
Date Collected1992-06-19
UASM2144 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Bilby
Collected ByBryant, Owen
Date Collected1924-06-17
UASM2145 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Kananaskis Country, Kananaskis
Collected ByBrowett, R.
Date Collected1959-06-05
UASM2146 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Kananaskis Country, Kananaskis
Collected ByBrowett, R.
Date Collected1959-06-05
UASM2148 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Jasper National Park, Pocahontas
Collected ByBowman, K.
Date Collected1918-06-17
UASM2149 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Red Deer
Collected ByCrosby, G. C. S.
Date Collected1922-05-30
UASM2150 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Date Collected1915-05-15
UASM2163 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Nordegg
Collected ByBowman, K.
Date Collected1921-06-10
UASM2164 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Nordegg
Collected ByBowman, K.
Date Collected1919-06-04
UASM2165 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Date Collected1920-07-02
UASM2166 - Clostera brucei
University of Alberta E.H. Strickland Entomological Museum
Place CollectedCanada: Alberta, Edmonton
Date Collected1920-07-02