The correlation of monthly sd of precipitation to Centroid size of the P. apollo fore and hindwing (the extreme weather event highlighted with a green circle).

 
 
  Part of: Štefánik M, Fedor P (2020) Environmental stress in Parnassius apollo reflected through wing geometric morphometrics in a historical collection with a possible connection to habitat degradation. Nature Conservation 38: 79-99. https://doi.org/10.3897/natureconservation.38.48682