The millipede family Striariidae Bollman, 1893. VI. Six new genera and thirteen new species from western North America (Diplopoda, Chordeumatida, Striarioidea) Author Shear, William A. 0000-0002-5887-7003 Professor Emeritus, Department of Biology, Hampden-Sydney College, Hampden-Sydney VA 23943 USA, current address: 1950 Price Drive, Farmville VA 23901 USA. wshear @ hsc. edu; https: // orcid. org / 0000 - 0002 - 5887 - 7003 wshear@hsc.edu Author Marek, Paul E. Department of Entomology, Virginia Tech, Blacksburg VA 24061 USA. text Zootaxa 2022 2022-11-11 5205 6 501 531 journal article 187956 10.11646/zootaxa.5205.6.1 4b6eb79c-018f-470b-ac46-6646270ec7ee 1175-5326 7318605 9D1DEC25-5FA2-4D64-807E-F103C3FCB5CA Subfamily Trisariinae Shear, 2020 Note : The diagnosis of this subfamily, it now appears, was too narrowly based on the type genus, Trisaria Shear, 2020 . However, we do believe that the genera grouped in it represent a monophyletic taxon. Presently we rely on gonopod and ninth leg characters for a diagnosis (see key above) but when more genera and species of Striariidae available have been studied and described, we expect to compose a more detailed diagnosis. The new genus Ralampia is particularly difficult to place; the two species may or may not have a flagellocoxite and though there is a branch of the gonopod that resembles one, it is not sheathed. Ralampia filamentosa n. gen., n. sp. , has a lateral filamentous branch that appears similar to those seen in Trisaria . The ninth leg telopodites appear to be free. For the time being, however, we include this genus in Striariinae .