Butterfly Count Results for Olmsted County (Rochester) in Minnesota
                      Note: click on species names to see photographs and other information on the species Butterflies & Moths.org
# of years Year  
  Butterfly Species Low Avg High 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999
Black Swallowtail 1 12.0 28 10   13   6 21 28 23   3 12 24 1 13
Eastern Tiger Swallowtail 1 3.8 11 10   11 1 4 5 11 2   1 1   8 1
Giant Swallowtail 1 0.3 1 3         1 1         1    
 
Checkered White 1 0.7 7 2         1           7    
Cabbage White 4 57.4 152 12   89 4 43 117 35 87 10 12 48 152 34 58
Clouded/Orange Sulphur 1 0.3 2 2                     1   2
Clouded Sulphur 2 46.3 192 11   150   37 118 20 3 2 7 7 4 16 192
Orange Sulphur 1 74.7 329 11   329   15 99 4 13 14 1 74 319 20 8
Little Yellow 4 0.3 4 1   4                      
 
American Copper 1 4.1 22 8   1 14 1 22   3 1 2 5      
Gray Copper 1 1.4 6 7     1 1 3 4     6 1     1
Bronze Copper 1 0.3 1 3   1 1   1                
Coral Hairstreak 1 4.1 20 9     6 3 2   1 20 3 12 1 1  
Banded Hairstreak 1 4.7 19 10   1 19 16 4   3 3 6 2 1 1  
Hickory Hairstreak 1 0.1 1 1       1                  
Edward’s Hairstreak 3 1.7 13 3       3 13   4            
Striped Hairstreak 1 0.8 8 2       8   1              
Acadian Hairstreak 1 0.1 1 1         1                
Gray Hairstreak 1 0.1 1 1         1                
  unidentified hairstreak 2 1.3 10 3     4 10 2                
 
Eastern Tailed Blue 2 50.5 223 12   16 4 14 223 39 29 15 2 50 60 130 24
Spring/Summer Azure 1 23.5 80 11   37 1 13 6 31 80 2 2 25 72 13  
Summer Azure photo  
American Snout 2 0.7 6 2         2           6    
 
Great Spangled Fritillary 3 20.5 45 12   21 13 7 29 3 35 14 45 24 23 25 7
Aphrodite Fritillary 1 0.3 2 2             1         2  
  unidentified Speyeria fritillary 2 28.0 89 10   8 2 9 12 39 29 89 53 82 13    
Variegated Frittilary 2 0.2 2 1                     2    
  unidentified small fritillary 1 0.7 4 3   4       3       1      
 
Pearl Crescent 1 14.9 99 11   9   12 7 1 2 9 3 27 7 99 3
Northern Crescent 1 0.8 4 4       4 3 1             1
Baltimore Checkerspot 1 1.0 9 3             9   1 2      
Silvery Checkerspot 1 0.3 2 2       2 1                
  unidentified crescent 1 0.5 5 2   5     1                
 
Question Mark 1 2.2 6 8   2   1 6       1 3 6 2 5
Eastern Comma 1 2.5 5 9   4   5 4 3 2 1 5   1 5  
Gray Comma 1 0.1 1 1         1                
  unidentified angelwing 1 0.7 3 4   2     3 2     1        
Mourning Cloak 1 3.0 18 9   1 1 18 7   2 1   1 4 1  
Milbert’s Tortoiseshell 2 4.3 49 2             49         2  
American Lady 1 1.0 5 5   3   1 5           2 1  
Painted Lady 1 3.2 26 7   1   1 5   3   1 1 26    
Red Admiral 1 25.8 145 11   75   8 145 2 1 1 5 2 62 4 4
Common Buckeye 1 3.8 26 6   8   1 26 2           1 8
 
Red Spotted Purple 1 1.6 5 7     2 5 3 1 3   4   1    
Viceroy 1 3.8 14 9   8   1 14 5 1   3   9 2 2
Hackberry Emperor 1 3.1 10 10     1 10 2 1 2 8 2 5 3 3  
Tawny Emperor 2 0.4 3 2       2             3    
 
Northern Pearly-eye 3 10.8 31 11   3 4 16 26 8 4 18 31 10 4 6  
Eyed Brown 4 14.6 35 12   6 17 29 9 4 14 13 6 35 10 12 20
Little Wood-Satyr 1 2.1 12 5   1 7 12       4         1
Common Wood Nymph 27 73.4 146 12   39 61 146 51 81 54 106 77 131 72 36 27
 
Monarch 11 82.8 233 12   166 28 66 233 115 26 11 64 35 109 65 75
 
Silver-spotted Skipper 1 3.9 20 10   1   3 3 3 2 2 4 20 7 2  
Northern Cloudywing                            
Wild Indigo Duskywing                            
Common Sootywing 1 0.1 1 1                   1      
  unidentified duskywing                            
Least Skipper                            
European Skipper 1 7.3 85 4       85     1       1   1
Sachem 1 0.3 2 2       1   2              
Ottoe Skipper                            
Peck’s Skipper                            
Tawny-edged Skipper 1 0.3 3 2             1   3        
Crossline Skipper                            
Northern Broken-Dash 1 0.1 1 1     1                    
Delaware Skipper 1 1.5 5 7     4 5 1 1     2     4 1
Black Dash 1 0.7 2 6         2 1   1 1 2     1
Dun Skipper                            
Hobomok Skipper 1 0.1 1 1                       1  
Dusted Skipper 1 0.9 5 4         1   1     5 4    
  unidentified skippers 3 16.4 112 12   3 3 112 6 6 6 5 17 18 5 6 10
Low Avg High 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999
Grand Total Individuals   199 626 1248   1022 199 737 1248 458 496 350 374 642 1022 503 465
Number of Identified Species 20 28.4 41   27 20 38 41 27 31 21 29 27 31 28 21
            Unidentified species 1 4.0 5   5 3 3 5 4 2 2 3 3 3 1 2
Total Number of Species 23 41.9 46   32 23 41 46 31 33 23 32 30 34 29 23
Cumulative Species     55 54 54 53 48 46 45 45 44 41 33 22