Nishikawa, M., Ikeda, H., Kubota, K. and Sota, T. 2010. Taxonomic redefinition and natural history of the endemic silphid beetle Silpha longicornis (Coleoptera: Silphidae) of Japan, with an analysis of its geographic variation. Zootaxa. 2648, 1 (Oct. 2010), 1–31. DOI:https://doi.org/10.11646/zootaxa.2648.1.1.