A revision of the Chilean Brachyglutini – Part 2. Revision of Achilia Reitter, 1890: A. crassicornis, A. tumidifrons, A. bifossifrons and A. lobifera species groups (Coleoptera: Staphylinidae: Pselaphinae)

The Achilia crassicornis, A. tumidifrons, A. bifossifrons and A. lobifera species groups (sensu Jeannel 1962) of the species-rich genus Achilia Reitter, 1890 are revised. Of the nine taxa placed so far in these four groups of species two belongs to different groups and will be treated elsewhere (i.e. A. parvula Jeannel, 1962 and A. nahuelbutae Franz, 1996 with the A. humidula and the A. cosmoptera groups, respectively), and five names are placed as junior synonyms: Achilia crassicornis antarctica Jeannel, 1962 and A. obscura Jeannel, 1962 = A. crassicornis Jeannel, 1962 (syn. nov.); Achilia tumidifrons Jeannel, 1962, A. globiceps Jeannel, 1962 and A. paraglobiceps Franz, 1996 = A. larvata (Reitter, 1885) (syn. nov.). The lectotypes and paralectotypes of A. larvata and A. bifossifrons (Reitter, 1883) are designated. The five species left in these groups are redescribed, their distribution is detailed, and habitat/collecting data are summarized.