Revision of Chinese Phorocardius species (Coleoptera, Elateridae, Cardiophorinae)

The Chinese species of Phorocardius Fleutiaux, 1931 have been studied and six species are described as new: P.alterlineatus Ruan & Douglas, sp. nov.; P.flavistriolatus Ruan & Douglas, sp. nov.; P.minutus Ruan & Douglas, sp. nov.; P.rufiposterus Ruan & Douglas, sp. nov.; P.yunnanensis Ruan & Douglas, sp. nov.; and P.zhiweii Ruan, Douglas & Qiu, sp. nov. Lectotypes are designated for Cardiophoruscomptus Candèze, 1860, Cardiophoruscontemptus Candèze, 1860, Phorocardiusmagnus Fleutiaux, 1931, and Cardiophorusmanuleatus Candèze, 1888. The holotype is identified for Cardiophorusyanagiharae Miwa, 1927. Phorocardiusflorentini (Fleutiaux, 1895) and P.manuleatus (Candèze, 1888) are newly reported from China; P.comptus (Candèze, 1860) is excluded from the Chinese fauna. A key to the 11 Phorocardius species known from China is given. Phorocardius is newly recorded from deep within the Palearctic Region. The procoxal cavities of P.rufiposterus Ruan & Douglas, sp. nov. are closed, which is different from all other species of Phorocardius. An annotated checklist of the 21 Phorocardius species of the world is provided. Additionally, Phorocardiuscontemptus (Candèze, 1860), comb. nov. is transferred from Cardiophorus to Phorocardius; four species are transferred from Phorocardius to Displatynychus: Displatynychusbombycinus (Candèze, 1895), comb. nov., Displatynychuspakistanicus (Platia & Ahmed, 2016), comb. nov., Displatynychussobrinus (Laporte, 1840), comb. nov., and Displatynychustibialis (Platia & Ahmed, 2016), comb. nov.