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Pyrgus undersides chart ("the 7") Pyrgus undersides chart ("other 7") Pyrgus observations

Key:

green: a characteristic usually, but not necessarily exclusively, indicative of this species.

yellow: within the range of variation of this species, but not considered indicative.

red: a characteristic that would preclude this species.

 

Typical examples of the key marks are shown below (links from text).

If a mark meets the description/illustration, it is a strong pointer to the indicated species;

if it does not, but it is close, this does not necessarily preclude the indicated species.

If the total for any species reaches 100, it can reasonably be assumed to be positively identified.

For some species the maximum only just exceeds 100 and for others is much higher; this reflects the

uniqueness and reliability of the key marks.

band     alveus armoricanus carlinae cirsii bellieri onopordi serratulae
marginal s1/2 largely unmarked              
    weak arrow-shaped marks, slightly amorphous 25            
    clear arrow-shaped marks, not (or slightly) solid   20          
    two solid-ish white arc-shaped marks, especially s2         10   30
  s3/6 discrete submarginal spots, medium-large              
  v5 short, rectangular, amorphous internal edge 20   -        
    short, rectangular, amorphous edge, washed brown -   - 25   10  
    medium-long, rectangular, irregular internal edge   10         10
    long rectangular with neat-ish internal edge -100   50   10    
discal s1 bump, not very rounded, slightly leaning internally   25 20        
    bump, symmetrical and rounded, non-leaning             20
    bump noticeably large, often leaning internally         50    
    bump, slightly rounded, clearly leaning internally 25            
    regular tooth-shaped bump, strongly leaning internally -1 -   50      
    bump, the top half significantly displaced internally           30  
  s2 minute or absent     20        
    small rounded mark, slightly amorphous       10      
    medium-sized rounded or amorphous mark   10          
  s4/5 internal edge straight 5 5 5 10     5
    wide, external edge (almost) straight             20
    broadly regular concave either side, anvil-shaped           50  
    cleft externally top and bottom   10   10 25    
    cleft externally top only              
basal s7 medium-sized rectangular, straight edges 10 10 10        
    medium-sized broadly rectangular, rounded corners              
    small oval-ish mark       10      
    medium-sized oval/circular, only just touching veins             30
unh gc   yellow-brown 10   10   25   10
  pale reddish-brown           10  
  reddish-brown to very warm reddish-brown       25      
    olive-brown to greenish              
    green              
    dark brown   25          
abdomen   underneath of abdomen showing an extensive white hair tuft (c.f. alveus)         50    
veins   not prominent 10            
    slightly prominent         20    
    distinctly prominent   25   20   20  
    white marks with black borders, marbled effect       10   30  

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All marks have been aligned in the same orientation: "internally" means to the left.

 

marginal s1/2

         

clear arrow-shaped marks, not (or slightly) solid

two solid-ish white arc-shaped marks, especially s2

 

marginal v5

                 

short, rectangular, amorphous internal edge

short, rectangular, amorphous edge, washed pale brown

long rectangular with neat-ish internal edge

 

discal s1

                                       

bump, not very rounded, slightly leaning internally

bump, rounded, non-leaning

bump, slightly rounded, clearly leaning internally

regular tooth-shaped bump, strongly leaning internally 

bump, the top half significantly displaced internally (Signe de Blachier)

 

discal s4/5

                 

wide, external edge (almost) straight

broadly regular concave either side, anvil-shaped

cleft externally top and bottom