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. Accessed 16 Apr. 2024.

Authorship

Name Anweiler, G. G.
Role species page author

References

Specimen Information

There are 88 specimens of this Species.

88 results plotted on map in 34 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

JD6605 - Clostera brucei

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Claresholm Collected ByDombroskie, J. J. et al Date Collected2007-07-31

BIRD35893 - Clostera brucei

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2012-05-26

BIRD36786 - Clostera brucei

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2013-05-20

BIRD36788 - Clostera brucei

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Rimbey Collected ByBird, C. D. Date Collected2013-06-23

Adult Seasonal Distribution