Species Details

Drasteria petricola

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

Common NameLittle Arches SeasonalityAdult flight peaks between mid May and mid July, earlier at lower elevations. IdentificationThe smallest of the Arches (Drasteria) moths. In Alberta, it is the only species in the genus with black lines along the veins of the ventral forewing margin. The mountain populations (ssp. athabasca) tend to be slightly larger and have a more yellow-tan cast to the hindwing compared to the prairie populations (ssp. crokeri). Prairie individuals can be strikingly different with their blue-grey and white colouration, and Barnes and Benjamin (1924) thought these differences may be indicative of a separate species; Individuals from the Calgary and Lethbridge region seem to be intermediate between the two forms, but more work is needed to clarify this situation.

Scientific Name Drasteria petricola Common Name Little Arches Habitat Sparsely vegetated, open habitats, including alpine and montane meadows and prairie grasslands. Seasonality Adult flight peaks between mid May and mid July, earlier at lower elevations. Identification
The smallest of the Arches (Drasteria) moths. In Alberta, it is the only species in the genus with black lines along the veins of the ventral forewing margin. The mountain populations (ssp. athabasca) tend to be…
The smallest of the Arches (Drasteria) moths. In Alberta, it is the only species in the genus with black lines along the veins of the ventral forewing margin. The mountain populations (ssp. athabasca) tend to be slightly larger and have a more yellow-tan cast to the hindwing compared to the prairie populations (ssp. crokeri). Prairie individuals can be strikingly different with their blue-grey and white colouration, and Barnes and Benjamin (1924) thought these differences may be indicative of a separate species; Individuals from the Calgary and Lethbridge region seem to be intermediate between the two forms, but more work is needed to clarify this situation.
Life History Adults are diurnal and do not come to light. They can be difficult to detect and observe with their rapid flight and contrasting black and white coloration. Conservation Not of concern. Diet Info The larvae feed on Hedysarum (Lafontaine & Wood 1997). Adults take nectar at flowers, including mint in Utah (Richards 1939). Range A western species, found from the Yukon and NWT south to New Mexico in the Rockies, east to Manitoba (Lafontaine & Wood 1997).

Citation

Page Citation for Drasteria petricola

Page Citation

"Species Details - Drasteria petricola, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-2915. Accessed 25 May. 2024.

Authorship

Name Schmidt, B. C.
Role species page author
Date 2003-04

References

Specimen Information

There are 77 specimens of this Species.

77 results plotted on map in 36 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM13076 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Hillcrest Collected ByBowman, K. Date Collected1920-06-20

UASM13077 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1916-07-16

UASM13078 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Calgary Collected BySalt, George Date Collected1919-06-11

UASM13079 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1917-07-12

UASM13080 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1916-07-16

UASM13081 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Hillcrest Collected ByBowman, K. Date Collected1920-06-20

UASM13082 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1934-06-26

UASM13083 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Pocahontas Collected ByBowman, K. Date Collected1917-06-11

UASM13084 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Pocahontas Collected ByBowman, K. Date Collected1918-06-16

UASM13085 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1917-07-13

UASM13086 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Banff National Park, Banff Date Collected1925-07-02

UASM13087 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Pocahontas Collected ByBowman, K. Date Collected1916-05-18

UASM13088 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Collected ByWhitehouse, F. C. Date Collected1916-06-25

UASM13089 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Pocahontas Collected ByBowman, K. Date Collected1917-06-17

UASM13090 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Nordegg Collected ByBowman, K. Date Collected1934-06-26

UASM13091 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Pocahontas Collected ByBowman, K. Date Collected1917-06-17

UASM13092 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Pocahontas Collected ByBowman, K. Date Collected1917-06-11

UASM13093 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Red Deer Collected ByBowman, K. Date Collected1922-06-11

UASM13094 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Pocahontas Collected ByBowman, K. Date Collected1918-06-16

UASM13095 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Jasper National Park, Pocahontas Collected ByBowman, K. Date Collected1917-06-11

UASM13096 - Drasteria petricola

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Cypress Hills Collected ByBowman, K. Date Collected1950-07-11

Adult Seasonal Distribution