Arctesthes spp., male abdomen and genitalia (ventral view unless otherwise indicated). 21) A. catapyrrha, male abdomen (unrolled); 22) A. catapyrrha, genital capsule; 23) A. catapyrrha, phallus; 24) A. siris, genital capsule; 25) A. siris, phallus.

 
 
  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