Pero occidentalis, the western pero, is a species of geometrid moth in the family Geometridae. It was described by George Duryea Hulst in 1896 and is found in North America.
The MONA or Hodges number for Pero occidentalis is 6761.Pohl, G.R., Patterson, B., & Pelham, J.P. (2016). Taxonomic Checklist of the Lepidoptera of North America, North of Mexico
References
Ferris C (2010). "A revision of the genus Antepione Packard with description of the new genus Pionenta Ferris (Lepidoptera, Geometridae, Ennominae)". ZooKeys. 71: 49-70. Scoble, Malcolm J., ed. (1999). Geometrid Moths of the World: A Catalogue (Lepidoptera, Geometridae). 1016.
Further reading
Arnett, Ross H. (2000). American Insects: A Handbook of the Insects of America North of Mexico. CRC Press.
External links
Butterflies and Moths of North America