Arctesthes spp., uppersides. 7) A. siris, male, Zero Gully, Waikaia River CO; 8) A. siris, female, Rock and Pillar Range CO; 9) A. titanica, male paratype, White Burn, Von River OL; 10) A. titanica, female paratype, White Burn, Von River OL; 11) A. titanica, female, Von River north branch OL. Scale bars: 10 mm.

 
 
  Part of: Patrick BH, Patrick HJH, Hoare RJB (2019) Review of the endemic New Zealand genus Arctesthes Meyrick (Lepidoptera, Geometridae, Larentiinae), with descriptions of two new range-restricted species. Alpine Entomology 3: 121-136. https://doi.org/10.3897/alpento.3.33944