title: Isturgia limbaria
text: # Isturgia limbaria
  
  Isturgia limbaria, the frosted yellow, is a moth of the family Geometridae.
  
  ## Distribution
  
  This species can be found in parts of Central and Southern Europe. It is extinct in Britain.
  
  ## Habitat
  
  These moths inhabit heathers, edge of the forests and scrubby areas.
  
  ## Description
  
  Isturgia limbaria has a wingspan of 26–30 millimetres (1.0–1.2 in). Forewings can reach a length of 13–15 millimetres (0.51–0.59 in). The male has feathered antennae, while those of the females are filiform. The upperside of the wings is yellow or orange yellow with a chocolate brown margin, less evident in the females. The underside of the hindwings is pale yellowish or greyish and strongly mottled, with visible longitudinal white stripes.
  
  ## Biology
  
  These day-flying moths fly from mid April to mid August in one or two generation. The larvae feed on broom. They over-winter as a pupa.
  
  * ^ The flight season refers to The Netherlands and Belgium. This may vary in other parts of the range.
  