title: Callisto coffeella
text: # Callisto coffeella
  
  Callisto coffeella is a moth of the family Gracillariidae found in Europe. It was first described by Johan Wilhelm Zetterstedt in 1839.
  
  ## Description
  
  The wingspan is 10–12 mm. There is one generation per year, with adults on wing in June.
  
  The larvae feed on mountain willow (Salix arbuscula), tea-leaved willow (Salix phylicifolia), and Salix silesiaca, mining the leaves of their host plant. Young larvae make a distinctly folded lower-surface tentiform mine. After some time, this mine is vacated and the larva lives freely in a leaf margin that has been folded downwards and is secured with silk. In small leaves the two halves are simply spun together in a pod. Two of these leaf folds are made and eaten out.
  
  ## Distribution
  
  The moth is found from Fennoscandia and northern Russia to the Pyrenees, Italy and Romania and from Scotland to Ukraine.
  
  