Description of three new species of Wormaldia McLachlan, 1865 from Vietnam (Trichoptera: Philopotamidae)

This dataset contains the digitized treatments in Plazi based on the original journal article Johanson, Kjell Arne, Pham, Hong-Thai (2025): Description of three new species of Wormaldia McLachlan, 1865 from Vietnam (Trichoptera: Philopotamidae). European Journal of Taxonomy 1007: 24-34, DOI: 10.5852/ejt.2025.1007.2991, URL: europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2991/13451 Abstract. Three previously unknown species of Wormaldia McLachlan, 1865 are herein described from the Cao Bang Province, N Nui Pia Oac Nature Reserve, located in northern Vietnam: Wormaldia piadenensis sp. nov., Wormaldia nui sp. nov., and Wormaldia caobangensis sp. nov.

These species are considered rare and encountered either as singletons or as a pair. The specimens were collected in 2012 using Malaise traps and light traps, which were strategically positioned along stream banks. Additionally, a key for the identification of the male individuals of the 19 known species of Wormaldia in Vietnam is provided.