- 12,515 specimens collected from at least 1 country
- 1,985 specimens identified from at least 4 countries
- 292 specimens used in 52 works
Progress
Collected From
- United States 12,514
Identified From
- United States 1,690
- Canada 44
- Mexico 43
- Costa Rica 1
Dates Collected
- 1875 – 1880 2
- 1880 – 1885 17
- 1885 – 1890 82
- 1890 – 1895 324
- 1895 – 1900 221
- 1900 – 1905 199
- 1905 – 1910 2,287
- 1910 – 1915 923
- 1915 – 1920 1,587
- 1920 – 1925 752
- 1925 – 1930 419
- 1930 – 1935 770
- 1935 – 1940 617
- 1940 – 1945 27
- 1945 – 1950 2
- 1950 – 1955 1
- 1960 – 1965 9
- 1970 – 1975 1
- 1975 – 1980 1
- 2015 – 2020 5
Dates Identified
- 1835 – 1840 1
- 1905 – 1910 1
- 1915 – 1920 3
- 1920 – 1925 86
- 1925 – 1930 23
- 1930 – 1935 1
- 1940 – 1945 1
- 1955 – 1960 3
- 1970 – 1975 1
- 1980 – 1985 8
- 1985 – 1990 2
- 1990 – 1995 1
- 1995 – 2000 1
- 2000 – 2005 8
- 2010 – 2015 85
- 2015 – 2020 4