- 15,394 specimens collected from at least 10 countries
- 448 specimens identified from at least 1 country
- 3,164 specimens used in 46 works
Progress
Collected From
- United States 15,321
- Canada 29
- Brazil 8
- Guam 2
- France 1
- India 1
- Tanzania 1
- Virgin Islands, British 1
- Georgia 1
- Dominican Republic 1
Identified From
- United States 448
Dates Collected
- 1895 – 1900 1
- 1900 – 1905 1
- 1905 – 1910 3
- 1910 – 1915 1
- 1915 – 1920 4
- 1920 – 1925 32
- 1925 – 1930 487
- 1930 – 1935 795
- 1935 – 1940 1,051
- 1940 – 1945 500
- 1945 – 1950 985
- 1950 – 1955 1,374
- 1955 – 1960 2,194
- 1960 – 1965 1,109
- 1965 – 1970 2,231
- 1970 – 1975 2,435
- 1975 – 1980 1,181
- 1980 – 1985 390
- 1985 – 1990 130
- 1990 – 1995 2
- 1995 – 2000 2