Mathew, S.M. & Prathapan, K.D. (2024) Morphology and taxonomic significance of the labrum in the flea beetle genus Chaetocnema Stephens, 1831 (Coleoptera, Chrysomelidae, Galerucinae, Alticini). Zootaxa, 5512 (2), 185–199.
https://doi.org/10.11646/zootaxa.5512.2.3