NEW SPECIES OF GROUND BEETLES OF THE GENUS DOLICHOCTIS SCHMIDT-GOEBEL, SUBGENUS SPINIDOLICHOCTIS BAEHR, FROM THE PAPUAN AND ORIENTAL REGIONS (INSECTA: COLEOPTERA: CARABIDAE: LEBIINAE)

Eight new species of ground beetles of the lebiine genus Dolichoctis Schmidt-Goebel, 1846, from New Guinea and the island of Seram are described: D. bisetosiceps from Goodenough Island off the southeast coast of Papua New Guinea; D. ivimkae, D. ocularis, D. latibasis, D. aterrima, and D. cylindripennis from eastern and northern Papua New Guinea; D. lackneri from central Papua Indonesia; and D. mehli from Scram. All species belong to the subgenus Spinidolichoctis Baehr, 1999, which is characterized by the dentate or spit-lose apex of the elytra and the absence of the anterior marginal seta of the pronotum. This subgenus mainly occurs in the Papuan Region with a few species recorded from the southern Oriental Region and from northeastern Australia. For the new species, differential diagnoses are provided that distinguish them from related or similarly shaped species. A complete new key is provided for the subgenus Spinidolichoctis. Some thoughts on evolution and biogeography of the genus Dolichoctis in New Guinea are outlined.