Reference

Jade Aster T. Badon, Justin S. Nuyda (2020): A new subspecies of Ptychandra negrosensis Banks, Holloway & Barlow, 1976 (Lepidoptaera: Nymphalidae, Satyrinae) from Panay Island, Philippines – Nachrichten des Entomologischen Vereins Apollo – 41: 154 - 156.