The horse-shoe vetch Hippocrepis comosa is the most important larval host plant of the chalk-hill blue. In the western part of its distribution, this plant species is even the only host plant. An inflorescence is shown to the left, the typical pinnate leaves to the right. Gánt, Vértes mountains, western Hungary, 21.VII.2014. Photos: 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