The genus Alaolacon Candèze, a senior synonym of the genus Eumoeus Candèze (Coleoptera, Elateridae, Agrypninae)

Alaolacon Candèze, 1865 is found to be a senior synonym of Eumoeus Candèze, 1874, Luzonicus Fleutiaux, 1916 and Tharopsides Fleutiaux, 1918. Alaolacon is represented by A. bakeri (Fleutiaux, 1916), comb. n., A. candezei Fleutiaux, 1928, A. cyanipennis Candèze, 1865, A. fujiokai sp. n., A. griseus Candèze, 1874, A. megalopus sp. n., A. murrayi (Candèze, 1874), comb. n., and A. philippinensis nom. n. This genus is redescribed based on the descriptions of three species, A. candezei, A. fujiokai, and A. megalopus as well as the examination of the holotypes of A. cyanipennis and A. murrayi comb. n. Males of the genus Alaolacon exhibit 12-segmented and biflabellate antennae, and the females exhibit 11-segmented and subpectinate antennae. A key to species is provided