- 398 specimens collected from at least 5 countries
- 1,482 specimens identified from at least 18 countries
- 987 specimens used in 39 works
Progress
Collected From
- United States 322
- Canada 30
- Mexico 28
- Costa Rica 13
- United Arab Emirates 1
Dates Collected
- 1915 – 1920 1
- 1955 – 1960 1
- 1965 – 1970 1
- 1970 – 1975 1
- 1980 – 1985 87
- 1985 – 1990 74
- 1990 – 1995 64
- 1995 – 2000 8
- 2000 – 2005 3
- 2005 – 2010 35
- 2010 – 2015 87
- 2015 – 2020 25
Dates Identified
- 1940 – 1945 1
- 1985 – 1990 50
- 1990 – 1995 449
- 1995 – 2000 2
- 2000 – 2005 15
- 2005 – 2010 2
- 2015 – 2020 5