The purple crown vetch Securigera varia is an important additional larval host plant from the Balkan Peninsula to eastern Brandenburg and Poland. In some regions, e.g. Brandenburg, this plant is the sole larval host plant. Strausberg, eastern Brandenburg, 17.VI.2014. Photo: Thomas Schmitt.

 
 
  Part of: Schmitt T (2015) Biology and biogeography of the chalk-hill blue Polyommatus coridon – insect of the year 2015 for Germany, Austria and Switzerland. Nota Lepidopterologica 38(2): 107-126. https://doi.org/10.3897/nl.38.4977