Species Details

Idia occidentalis

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

SeasonalityAlberta specimens have been collected in mid August. IdentificationA medium-size (wingspan approx. 3 cm) broad-winged dull light and darker yellow-brown moth with a glossy sheen. The forewings are pale yellow-brown, overlaid with dull sooty brown on the basal third and in a broad band across the post-media area. The outer edge of the postmedian band is well-defined and erratic, followed by a thin broken terminal line. The hindwings are similarly marked, but less well defined. The wing fringes are light brown. The entire pattern is poorly defined and "cloudy". Idia lubricalis (Gey.) (see below) is a smaller, darker moth. Some specimens of occidentalis have more dark scaling and a more complete pattern than is evident on the illustrated specimen. Idia immaculalis is pale tan without any pattern. Two other species with a similar color and sheen include Protoperigea posticata (Harv.) and Pronoctua peabodyae.

Scientific Name Idia occidentalis Habitat dry open areas, arid native grasslands and badlands Seasonality Alberta specimens have been collected in mid August. Identification
A medium-size (wingspan approx. 3 cm) broad-winged dull light and darker yellow-brown moth with a glossy sheen. The forewings are pale yellow-brown, overlaid with dull sooty brown on the basal third and in a broad…
A medium-size (wingspan approx. 3 cm) broad-winged dull light and darker yellow-brown moth with a glossy sheen. The forewings are pale yellow-brown, overlaid with dull sooty brown on the basal third and in a broad band across the post-media area. The outer edge of the postmedian band is well-defined and erratic, followed by a thin broken terminal line. The hindwings are similarly marked, but less well defined. The wing fringes are light brown. The entire pattern is poorly defined and "cloudy". Idia lubricalis (Gey.) (see below) is a smaller, darker moth. Some specimens of occidentalis have more dark scaling and a more complete pattern than is evident on the illustrated specimen. Idia immaculalis is pale tan without any pattern. Two other species with a similar color and sheen include Protoperigea posticata (Harv.) and Pronoctua peabodyae.
Life History
Very poorly known. There is a single brood in Alberta, and adults come to light. The larval hosts are unrecorded, but related species feed on fungi and mold on damp and decaying vegetable matter. Alberta specimens…
Very poorly known. There is a single brood in Alberta, and adults come to light. The larval hosts are unrecorded, but related species feed on fungi and mold on damp and decaying vegetable matter. Alberta specimens have been collected in mid August.
Diet Info The larval hosts are unrecorded, but related species feed on fungi and mold on damp and decaying vegetable matter Range A western species; known from southern Alberta and BC south to Colorado, Arizona and California. In Alberta it has been collected only in Dinosaur Provincial Park, in arid native grasslands and badlands.

Citation

Page Citation for Idia occidentalis

Page Citation

"Species Details - Idia occidentalis, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-5120. Accessed 11 Dec. 2023.

Specimen Information

There are 21 specimens of this Species.

21 results plotted on map in 12 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM2609 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Dinosaur Provincial Park Collected ByAnweiler, G. G.; Troubridge, J. Date Collected2001-08-14

UASM2654 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Dinosaur Provincial Park Collected ByAnweiler, G. G.; Troubridge, J. Date Collected2001-08-14

UASM57867 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Dinosaur Provincial Park Collected ByTroubridge, J.; Anweiler, G. G. Date Collected2001-08-14/2001-08-15

JD3030 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: California, Santa Barbara county, Santa Barbara Collected ByDombroskie, J. J. et al Date Collected2007-07-17

UASM186601 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Kittitas county, Umptanum Creek Collected ByTroubridge, J. Date Collected2001-09-14

UASM186602 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer River Collected ByLawrie, D. Date Collected1999-08-13

UASM186603 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Nevada, Lyon county, Carson River Collected ByTroubridge, J. Date Collected2000-08-29

UASM186604 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Oregon, Malheur county, Vale Collected ByTroubridge, J. Date Collected2002-08-31

UASM186605 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Oregon, Malheur county, Malheur River Collected ByTroubridge, J. Date Collected1999-09-06

UASM186606 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Kittitas county, Schnebly Coulee Collected ByTroubridge, J.; Crabo, L. Date Collected1994-06-02

UASM186607 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Grant county, Wanapum Dam Collected ByTroubridge, J. Date Collected1993-09-17

UASM186608 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Grant county, Wanapum Dam Collected ByTroubridge, J. Date Collected1993-09-17

UASM186609 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lost River Collected ByTroubridge; Lafontaine Date Collected2003-07-22

UASM186610 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Lost River Collected ByTroubridge; Lafontaine Date Collected2003-07-22

UASM186611 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Mount Kobau Collected ByTroubridge, J. Date Collected1999-08-04

UASM186612 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Mount Kobau Collected ByTroubridge, J. Date Collected1999-08-04

UASM186613 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Mount Kobau Collected ByTroubridge, J. Date Collected1999-08-04

UASM186614 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Mount Kobau Collected ByTroubridge, J. Date Collected2002-08-03

UASM186615 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Mount Kobau Collected ByTroubridge, J. Date Collected2002-08-03

UASM186616 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: British Columbia, Mount Kobau Collected ByTroubridge, J. Date Collected2002-08-03

UASM186617 - Idia occidentalis

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: California, Santa Barbara county, Los Padres National Forest Collected ByDombroskie, J. J. et al Date Collected2007-07-17

Adult Seasonal Distribution