Species Details

Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

Common NamePoplar Carpenterworm SeasonalityAdults have been collected in Alberta from mid-June through early August. IdentificationA large (4.0-5.0 cm wingspan) heavy-bodied grey moth. The body is slate grey or blackish. Forewings are dark grey or black over the basal half, shading to lighter grey on the outer half, and are crossed by a network of fine broken black lines. The hindwings are thinly scaled and somewhat translucent white, with a very fine network of indistinct dark lines and a narrow black terminal line. Antennae are narrowly bipectinate in males, finely serrate in females. Sexes similar except for size, with females larger than males. The two-tone forewing with dark basal half and the pale hindwings will separate the Poplar Carpenterworm from the similar Carpenterworm (P. robiniae) and Aspen Carpenterworm (A. populi).

Scientific Name Acossus centerensis Common Name Poplar Carpenterworm Habitat Mature woodland with poplar, in particular Trembling aspen. Seasonality Adults have been collected in Alberta from mid-June through early August. Identification
A large (4.0-5.0 cm wingspan) heavy-bodied grey moth. The body is slate grey or blackish. Forewings are dark grey or black over the basal half, shading to lighter grey on the outer half, and are crossed by a network…
A large (4.0-5.0 cm wingspan) heavy-bodied grey moth. The body is slate grey or blackish. Forewings are dark grey or black over the basal half, shading to lighter grey on the outer half, and are crossed by a network of fine broken black lines. The hindwings are thinly scaled and somewhat translucent white, with a very fine network of indistinct dark lines and a narrow black terminal line. Antennae are narrowly bipectinate in males, finely serrate in females. Sexes similar except for size, with females larger than males. The two-tone forewing with dark basal half and the pale hindwings will separate the Poplar Carpenterworm from the similar Carpenterworm (P. robiniae) and Aspen Carpenterworm (A. populi).
Life History
The larvae are borers that live in galleries they create in the trunks and stems of poplar trees, where they feed on the cambium area. Mature larvae are 4-5 cm long, creamy white with brown spots at the base of the…
The larvae are borers that live in galleries they create in the trunks and stems of poplar trees, where they feed on the cambium area. Mature larvae are 4-5 cm long, creamy white with brown spots at the base of the setae, and dark brown heads and thoracic shields. Little is known about the life cycle, but the closely related Carpenterworm takes up to three or four years to complete the life cycle, and it is probable that the Poplar Carpenterwom also takes several years to mature. The adults come to light. Larvae are occasionally been found when splitting aspen logs for firewood. Their boring can weaken trees, making them more vulnerable to wind damage and drought, but they are not abundant enough to be a serious problem.
Conservation At the northwestern edge of it's range in Alberta; no concerns. Diet Info The only Alberta data is for an adult reared at Altario from a larva in an aspen poplar (Populus tremuloides) log split for firewood. They probably also utilizes other poplar species as well. Range Eastern North America, west to central Alberta. In Alberta, they have been collected along the southern edge of the Boreal forest (Lac la Biche, Redwater and Edmonton areas) and in the Aspen Parkland (Altario).

Citation

Page Citation for Acossus centerensis

Page Citation

"Species Details - Acossus centerensis, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-2292. Accessed 23 Apr. 2024.

Authorship

Name Anweiler, G. G.
Role species page author

References

Specimen Information

There are 22 specimens of this Species.

22 results plotted on map in 10 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM2829 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1941-07-06

UASM2832 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByLawrie, D. Date Collected1997-08-01

UASM2833 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Redwater Collected ByLawrie, D. Date Collected1999-07-20

UASM2878 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByMackie, Donald Date Collected1924-06-02

UASM2879 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1927-07-20

UASM2880 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1927-07-20

UASM2881 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1926-07-25

UASM2882 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1944-07-01

UASM2883 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1945-07-21

UASM2884 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1926-07-07

UASM2885 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1924-07-14

UASM43157 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta Collected ByLawrie, D. Date Collected1998-06-22

UASM43158 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta Collected ByLawrie, D. Date Collected1998-06-24

BIRD3756 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Winfield Collected ByBird, C. D. Date Collected2003-07-22

UASM57947 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Saskatchewan, Melville Beach Collected ByAnweiler, G. G. Date Collected1995-07-07

UASM57948 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Saskatchewan, Melville Beach Collected ByAnweiler, G. G. Date Collected1997-07-10

UASM58556 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton National Park Collected ByAnweiler, G. G. Date Collected2005-07-07

UASM59133 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton Lakes National Park Collected ByPohl, G. R. Date Collected2005-07-11

BIRD31165 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Stettler Collected ByBird, C. D. Date Collected2009-07-22

BIRD31166 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Stettler Collected ByBird, C. D. Date Collected2009-07-22

BIRD33426 - Acossus centerensis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lowden Springs Conservation Area Collected ByBird, C. D. Date Collected2010-07-17

Adult Seasonal Distribution