Species Details

Oncocnemis major

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

IdentificationA medium-size (3.5-3.8 cm wingspan) dark grey moth with few strong markings. The forewings are dark grey with some black scaling aling the veins. It can be separated from riparia by the lack of white scales filling the claviform spot (grey filled and indistinct in major) and by the black streaks surrounded by white scales in the submarginal area in riparia (absent in major).

Scientific Name Oncocnemis major Habitat It is found in dry river valley bottoms associated with heavier soils, not in sandy areas (dunes and beaches) where it is replaced by closely related O. riparia. Identification
A medium-size (3.5-3.8 cm wingspan) dark grey moth with few strong markings. The forewings are dark grey with some black scaling aling the veins. It can be separated from riparia by the lack of white scales filling…
A medium-size (3.5-3.8 cm wingspan) dark grey moth with few strong markings. The forewings are dark grey with some black scaling aling the veins. It can be separated from riparia by the lack of white scales filling the claviform spot (grey filled and indistinct in major) and by the black streaks surrounded by white scales in the submarginal area in riparia (absent in major).
Life History Essentially nothing is known. The adults are nocturnal and have been collected in UV light traps. There is a single brood each year, with adults in late summer. Early stages and larval host plant(s) are unknown. Range Widely distributed but uncommon in the Pacific Northwest, east to the arid river valleys in the grasslands of southern and western Alberta (?). Notes
The Oncocnemis major-riparia “complex” is one of the most difficult and confused in the genus. Two and possibly 3 species in this group occur in Alberta, one of which appears to be major. Until the work being done…
The Oncocnemis major-riparia “complex” is one of the most difficult and confused in the genus. Two and possibly 3 species in this group occur in Alberta, one of which appears to be major. Until the work being done on the group at present by Jim Troubridge is complete little more than this can be said. The specimens reported as members of the major complex from Waterton Lakes National Park, Taber and Writing-On-Stone (Anweiler, unpublished report) may be major or one of the other species in the major group (J. Troubridge, per. comm.). These are therefore plotted as open circles on the map. The specimen illustrated above is from the Moths of Canada website.

Citation

Page Citation for Oncocnemis major

Page Citation

"Species Details - Oncocnemis major, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6186. Accessed 23 Jun. 2024.

References

Specimen Information

There are 4 specimens of this Species.

4 results plotted on map in 3 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM58573 - Oncocnemis major

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton National Park Collected BySchmidt, B. C. Date Collected2005-07-07

UASM77898 - Oncocnemis major

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton National Park Collected ByPike, E. M. Date Collected2005-07-11

UASM59075 - Oncocnemis major

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton National Park Collected ByPohl, G. R. Date Collected2005-07-09

UASM59076 - Oncocnemis major

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Waterton National Park Collected ByPohl, G. R. Date Collected2005-07-09

Adult Seasonal Distribution