Four new species and two subspecies of the genusPachyrhynchus Germar, 1824 (Coleoptera: Curculionidae: Pachyrhynchini) from Luzon Island, Philippines

Four new species and one new subspecies of the genus Pachyrhynchus Germar, 1824 from the Luzon Island are described and illustrated: P. sagittatus sp. nov.; P. tetramaculatus sp. nov.; P. kirklayroni sp. nov.; P. disargus sp. nov.; P. phaleratus ssp. dannylayroni subsp. nov.; P. congestus ssp. aedamlayroni subsp. nov..