New York Natural Heritage Program
Olympia Marble
Euchloe olympia (W.H. Edwards, 1871)

Threats [-]
One of the main threats to the Olympia marble is pesticide use to control gypsy moths. Most Lepidoptera are negatively impacted by the chemicals used in gypsy moth sprays, and the use of these chemicals could cause a decline in Olympia Marble populations in New York (Butler et al. 1995, Parshall 2002). Populations can also be threatened by prescribed fire and herbicides to maintain habitat openings. Hot prescribed burns can be lethal to individuals, and herbicides can destroy host plants needed by larvae. Habitat destruction is a potential threat in areas that are not already protected. Additionally, the habitat needed for this species is threatened by invasive plant species.

Conservation Strategies and Management Practices [-]
This species is sensitive to chemical spraying (e.g. herbicides, insecticides), and so broadcast use of chemicals in their habitat should be avoided. Managers should also avoid hot burns within inhabited areas, since populations can be impacted by prescribed fire (Butler et al. 1995, Parshall 2002). If an area occupied by the moth must be burned, some areas should be left unburned as refugia for the moth. Sites should be managed to promote growth of larval host plants (Arabis sp.).

Research Needs [-]
One of the most important research needs for this species is more current and complete data regarding species status and distribution. Olympia marble populations would benefit from statewide survey and monitoring efforts in suitable habitat. Other research needs include the amount of area populations need for survival, as well as the density of food plants and nectar sources at known sites (Parshall 2002). Additional information regarding suitable management practices, such as invasive species removal and prescribed fire, is also needed