Sh., H. R., D. Stüning, and R. Trusch. “Taxonomic Revision and Zoogeographical Patterns of the Species of Gnopharmia Staudinger, 1892 (Geometridae, Ennominae)”. Zootaxa, vol. 3360, no. 1, June 2012, pp. 1–52, doi:10.11646/zootaxa.3360.1.1.