Eastern Area

Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, West Virginia, Wisconsin, Vermont,

Eastern Great Basin

Arizona, Idaho, Utah, Wyoming,

Northern California

California,

Northwest

Oregon, Washington,

Northern Rockies

Idaho, Montana, North Dakota,

Rocky Mountain

Colorado, Kansas, Nebraska, South Dakota, Wyoming,

Southern Area

Alabama, Arkansas, Florida, Georgia, Louisiana, Kentucky, Mississippi, North Carolina, Oklahoma, Tennessee, Texas, South Carolina, Virginia,

Southern California

California,

Southwest

Arizona, Missouri, New exico, Texas,

Western Great Basin

Nevada,