Diagnostic characters of Demarchus pubipennis Jacoby, non-type male from Sri Lanka; D. javanus Bryant, non-type adult from Java; D. nigriceps Chen & Wang, holotype. Dorsal view: A D. pubipennis B D. javanus C D. nigriceps; lateral view: D D. pubipennis E D. javanus F D. nigriceps; head and pronotum: G D. pubipennis H D. javanus I D. nigriceps.

 
 
  Part of: Lee C-F, Chen J-C (2023) Demarchus hsui (Coleoptera, Chrysomelidae, Galerucinae, Alticini), a new species from Taiwan, with notes on immatures and biology. In: Chaboo CS, Schmitt M (Eds) Research on Chrysomelidae 9. ZooKeys 1177: 3-21. https://doi.org/10.3897/zookeys.1177.97854