[4] McHugh et al. (2013) conducted a genetic analysis of S. z. hippolyta and other S. zerene subspecies using mitochondrial DNA (mtDNA) and nuclear markers with a goal of identifying evolutionarily significant units (ESUs).

[5] There wasn't consensus among mitochondrial and nuclear markers so researchers were not able to resolve phylogenetic relationships or identify the taxa as monophyletic through genetic analysis.

[10] In recent years, although the winds and ocean salt spray continue to limit other vegetation growth, the wildfires have been suppressed due to modern development in this habitat.

[14] The ORBIC assists the USFWS and the Oregon Department of Fish and Wildlife (ODFW) to carry out conservation programs for invertebrates within the state.

[16] Researchers have been testing methods of maintaining and restoring the grassland habitat in coastal preserves, these include prescribed fire.

Fish and Wildlife Service, Lewis and Clark College and the Oregon Zoo gather female butterflies for captive rearing.

After being hatched and raised at the college and the zoos, the young are reintroduced as pupae to the wild to augment the existing populations.

[24] Oregon silverspots are considered to be moderately vulnerable to climate change due to their sensitivity to environmental conditions.