Hayashi, M. and T. Sota (2008) Discrimination of two Japanese water pennies, Eubrianax granicollis Lewis and E. ramicornis Kiesenwetter (Coleoptera: Psephenidae), based on laboratory rearing and molecular taxonomy. Entomological Science, 11(3): 349-357. /W社のWEBではもう出ているのだが.