Euphydryas gillettii, or Gillette's checkerspot, is a species of butterfly, common in western North America from British Columbia to Oregon and from the Rocky Mountains to the Pacific Ocean. The wingspan is . The species was first described by William Barnes in 1897.
Adults fly from mid-June to early August in Alberta. Its habitats include valleys, glades, open wooded areas in mountains, and streams.
Caterpillars feed on bracted honeysuckle (Lonicera involucrata). Adults feed on nectar from a variety of flowers including wild geranium and yellow composites.
Taxonomy
E.gillettii is in the subgenus Hypodryas The clade members are
Euphydryas maturna (Linnaeus, 1758) Euphydryas intermedia =Euphydryas ichnea (Boisduval, 1833) Euphydryas cynthia (Schiffermüller, 1775) Euphydryas iduna (Dalman, 1816) Euphydryas gillettii (Barnes, 1897)