Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1180368

Large Marble
Euchloe ausonides

Observation date: May 22, 2018
Submitted by: sgguthart
Specimen type: Photograph
Observation notes: I observed this butterfly while hiking at about 7,500' elevation. There were lots of Pussytoes, Delphiniums, Chickweeds, Phlox, and Dandelions blooming. Also blooming nearby (within a 1/8 mile or so) were Wallflowers (Erysimum spp.)
Status: Resident
Verified by: A_baldini
Verified date: August 27, 2018
Coordinator notes: Your hesitant ID is correct. The other similar-looking member of Pierinae in Larimer County, the Olympia Marble, is found in shortgrass prairie habitat at much lower elevations, usually no higher than the base of the foothills (I've seen them right above Dixon Reservoir). Also, the Olympia Marble lacks the "trident" of veining on the bottom right corner of the ventral hindwing.
Checklist region(s): Larimer County, United States, Colorado