Species Details

Xestia praevia

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

Seasonalityadults in Alberta from late July through August IdentificationA medium size moth (approx. 3.5-4.0 cm wingspan). There are two forms, one a light grey with a purple or pink tint, the other dark purple-grey. Markings consist of doubled dentate antemedian and postmedian lines, often faint or difficult to trace except for a black spot or bar where they meet the costa. The large round orbicular and the reniform spot are filled with slightly paler scales. The area in the cell basad to the orbicular and the lower part between the orbicular and reniform is black. The rest of the area between the reniform and orbicular is partially filled with reddish brown scales and the area beyond the postmedian line is also mixed with reddish-brown, although these may not be obvious. Pale forms are quite powdery and contrasting, while dark specimens appear quite even and smooth. Sexes similar, but males with bipectinate antennae, females with simple antennae.

Scientific Name Xestia praevia Habitat found in coniferous woodlands Seasonality adults in Alberta from late July through August Identification
A medium size moth (approx. 3.5-4.0 cm wingspan). There are two forms, one a light grey with a purple or pink tint, the other dark purple-grey. Markings consist of doubled dentate antemedian and postmedian lines,…
A medium size moth (approx. 3.5-4.0 cm wingspan). There are two forms, one a light grey with a purple or pink tint, the other dark purple-grey. Markings consist of doubled dentate antemedian and postmedian lines, often faint or difficult to trace except for a black spot or bar where they meet the costa. The large round orbicular and the reniform spot are filled with slightly paler scales. The area in the cell basad to the orbicular and the lower part between the orbicular and reniform is black. The rest of the area between the reniform and orbicular is partially filled with reddish brown scales and the area beyond the postmedian line is also mixed with reddish-brown, although these may not be obvious. Pale forms are quite powdery and contrasting, while dark specimens appear quite even and smooth. Sexes similar, but males with bipectinate antennae, females with simple antennae.
Life History
Adults are nocturnal and come to light. There is a single brood, with adults in Alberta from late July through August. The larvae is described and illustrated in color in Duncan (2006) They overwinter as partly grown…
Adults are nocturnal and come to light. There is a single brood, with adults in Alberta from late July through August. The larvae is described and illustrated in color in Duncan (2006) They overwinter as partly grown larvae. They are solitary defoliators of a variety of conifers, in particular Englemann, Black and White spruces Douglas-fir, Balsam fir, Jackpine and Lodgepole pine.
Diet Info Solitary defoliators of conifers, in particular Englemann, Black and White spruces Douglas-fir, Balsam fir, Jackpine and Lodgepole pine. Range
Across the forested parts of southern Canada, from NS west to central BC; south to NC and WI in the east, and the Canada-USA border in the west; also in the Cypress Hills. Widespread in the boreal forest, foothills and…
Across the forested parts of southern Canada, from NS west to central BC; south to NC and WI in the east, and the Canada-USA border in the west; also in the Cypress Hills. Widespread in the boreal forest, foothills and mountains of Alberta. They are found in coniferous woodlands.
Notes
Although this is a widespread and apparently not uncommon species in the boreal forest, foothills and mountains of Alberta based on the FIDS larval collections (Prentice 1962) adults have rarely been collected. Open…
Although this is a widespread and apparently not uncommon species in the boreal forest, foothills and mountains of Alberta based on the FIDS larval collections (Prentice 1962) adults have rarely been collected. Open dots on the map are unconfirmed records, mainly FIDS larval collections as reported by Prentice. Lafontaine treats the adult color forms, which appear to be associated with different host plant species, as "host races". The pale form female illustrated above is from the Moths of Canada website.

Citation

Page Citation for Xestia praevia

Page Citation

"Species Details - Xestia praevia, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-6225. Accessed 23 Jul. 2024.

References

Specimen Information

There are 43 specimens of this Species.

43 results plotted on map in 13 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM18522 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Jasper Collected ByBowman, K. Date Collected1938-08-09

UASM34736 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Athabasca Sand Dunes Provincial Park Collected ByMacaulay, D.; Lawrie, D. Date Collected2000-08-23

UASM41656 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Prospect Creek Collected ByAnweiler, G. G.; Schmidt, B. C. Date Collected2000-07-21

UASM57931 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Moose Lake Provincial Park Collected ByChristensen, B. Date Collected2003-08-20

UASM123358 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2005-07-21

UASM123359 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2005-07-21

UASM123360 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2005-07-21

UASM123361 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2005-07-21

UASM123362 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2005-07-21

UASM123363 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2005-07-21

UASM123364 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2005-07-21

UASM123365 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2004-07-30

UASM123366 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2004-08-01

UASM123367 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2004-08-02

UASM123368 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2004-08-14

UASM123369 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Stittsville Collected ByTroubridge, J. Date Collected2003-08-10

UASM123370 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Carp Ridge Collected ByTroubridge, J. Date Collected2003-08-15

UASM123371 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Constance Bay Collected ByForrest, W. Date Collected1985-07-26

UASM123372 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Pakenham Collected ByTroubridge, J. Date Collected2003-07-23

UASM123373 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Pakenham Collected ByTroubridge, J. Date Collected2003-08-19

UASM123374 - Xestia praevia

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Ontario, Pakenham Collected ByTroubridge, J. Date Collected2003-08-19

Adult Seasonal Distribution