Species Details

Amphipoea americana

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

Common NameAmerican Ear Moth IdentificationA medium-size (2.8-3.5 cm wingspan) moth with rusty-orange forewings and grey-brown hindwings with an orange-brown fringe. The forewings are covered with a network of narrow faint dark lines along the veins and marking the normal lines and spots. The claviform, orbicular and occasionally the reniform spot are filled with lighter yellow-orange, but in a few instances the reniform is bright contrasting white. Almost identical to A. interoceanica, but most interoceanica have a white reniform whereas in most Alberta americana it is yellow or orange. The pale filling of the reniform of interoceanica, confined to the outer two-thirds of the reniform, is more extensive in americana. Specimens require an examination of the genitalia for positive identification. Both sexes can usually be examined without dissecting by brushing and looking for the long digitus on the valve of americana males, or the shape of the 7th sternite in females.

Scientific Name Amphipoea americana Common Name American Ear Moth Habitat In Alberta it is collected commonly in the boreal forest and parklands region, as well as in wooded valleys in the grasslands. Identification
A medium-size (2.8-3.5 cm wingspan) moth with rusty-orange forewings and grey-brown hindwings with an orange-brown fringe. The forewings are covered with a network of narrow faint dark lines along the veins and…
A medium-size (2.8-3.5 cm wingspan) moth with rusty-orange forewings and grey-brown hindwings with an orange-brown fringe. The forewings are covered with a network of narrow faint dark lines along the veins and marking the normal lines and spots. The claviform, orbicular and occasionally the reniform spot are filled with lighter yellow-orange, but in a few instances the reniform is bright contrasting white. Almost identical to A. interoceanica, but most interoceanica have a white reniform whereas in most Alberta americana it is yellow or orange. The pale filling of the reniform of interoceanica, confined to the outer two-thirds of the reniform, is more extensive in americana. Specimens require an examination of the genitalia for positive identification. Both sexes can usually be examined without dissecting by brushing and looking for the long digitus on the valve of americana males, or the shape of the 7th sternite in females.
Life History
The adults are nocturnal and come to light. There is a single brood each year, flying in late summer and early fall. The larvae are borers in grasses and sedges, and in the USA americana has been reported as an…
The adults are nocturnal and come to light. There is a single brood each year, flying in late summer and early fall. The larvae are borers in grasses and sedges, and in the USA americana has been reported as an occasional minor pest on young corn.
Range Widespread, but the precise range is difficult to ascertain due to the numerous frequent errors in identification. Bowman reported it from the foothills and mountains, but we have not seen specimens to confirm this.

Citation

Page Citation for Amphipoea americana

Page Citation

"Species Details - Amphipoea americana, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6324. Accessed 24 May. 2024.

Authorship

Name Anweiler, G. G.
Role species page author
Date 2007

References

Specimen Information

There are 179 specimens of this Species.

179 results plotted on map in 57 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM18716 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1924-08-27

UASM14781 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Blackfalds Date Collected1915-08-17/1915-08-24

UASM14782 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1921-08-20

UASM14785 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1942-07-26

UASM14786 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1924-08-08

UASM14788 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1918-09-09

UASM14792 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1941-08-08

UASM14796 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1918-09-05

UASM14798 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1944-07-21

UASM14800 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1917-08-27

UASM14807 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1917-08-12

UASM14816 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1924-08-23

UASM14822 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Collected ByBowman, K. Date Collected1941-08-16

UASM14828 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1924-09-02

UASM14830 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1924-08-08

UASM14833 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1915-07-28

UASM14834 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1924-08-24

UASM14835 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1916-09-07

UASM14838 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Blackfalds Date Collected1916-08-25

UASM14839 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1924-08-27

UASM14840 - Amphipoea americana

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Edmonton Date Collected1917-09-11

Adult Seasonal Distribution