Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1251203

Rocky Mountain Dotted-Blue
Euphilotes ancilla

Observation date: June 01, 2020
Date notes: From photo metadata.
Submitted by: joeleahy
Specimen type: Photograph
Observation notes: Sunny, warm day. The butterfly was visiting Sulphur Flower. I have no photos of top.
Status: Resident
Verified by: A_baldini
Verified date: June 06, 2020
Coordinator notes: This is actually the Rocky Mountain Dotted-Blue, Euphilotes ancilla. The Lupine Blue is very similar, but has a row of blue scintillant spots on the ventral hindwing (these spots are plain black in E. ancilla). Both use the same host (and primary nectar) plant, sulphurflower buckwheat.
Checklist region(s): United States, Colorado, Jefferson County