Taxonomic revision of the genus Ectamenognonus Buysson (Coleoptera, Elateridae, Elaterinae) from Japan
In Japan, the genus Ectamenogonus Buysson, 1893 (tribe Megapenthini Gurjeva, 1973, subfamily Elaterinae Leach, 1815) was considered to have five species. However, the Japanese species remain unclear. The taxonomy of Japanese Ectamenogonus is revised and four species are confirmed: E. matobai (Kishii, 1973), E. miyakoensis sp. nov., E. plebejus (Candèze, 1873), and E. robustus (Kishii, 1966). Ectamenogonus matobai, E. plebejus, and E. robustus are redescribed. Ectamenogonus miyakoensis is described. Ectamenogonus yakuensis (Ôhira, 1970) and E. takumii Kishii, 2006 are synonymized with E. plebejus and E. robustus, respectively. A key to the four species in Japan is provided.