original descriptionVerhoeff, K. W. (1909). Neues System der Diplopoda-Ascospermophora. Zoologischer Anzeiger, 34(18-19): 566-572 page(s): 567 [details]
original description(ofUnderwoodiidae Verhoeff, 1909)Verhoeff, K. W. (1909). Neues System der Diplopoda-Ascospermophora. Zoologischer Anzeiger, 34(18-19): 566-572 page(s): 568 [details]
taxonomy sourceMinelli, A. (2015). Treatise on Zoology – Anatomy, Taxonomy, Biology. The Myriapoda, Volume 2. <em>Brill, Leiden; Boston.</em> 482 pp. page(s): 450; note: listed as a valid family in Table 16.1 [details]
additional sourceShear, William Albert. (2011). Cave millipeds of the United States. XI. Opiona graeningi, n. sp., a troglomorphic caseyid milliped from Siskiyou County, California, with comments on the genus Opiona Chamberlin 1951 (Diplopoda, Chordeumatida, Caseyidae). Zootaxa, 3114: 50-56[details]
additional sourceShear, William Albert. (2021). Additions to the millipede family Caseyidae. II. Martenseya, a new genus of miniature, blind millipedes from California (Diplopoda, Chordeumatida, Striariidea, Striarioidea, Caseyidae). Zootaxa, 4984 (1): 108-113, available online athttps://www.biotaxa.org/zootaxa/article/view/zootaxa.4984.1.10[details]
additional sourceShear, W. A.; Crawford, R. L. (2019). Cave millipedes of the United States. XVI. Two new species from Oregon Caves National Monument, Oregon (Chordeumatida, Conotylidae and Caseyidae). <em>Zootaxa.</em> 4674 (5): 571–580., available online athttps://doi.org/10.11646/zootaxa.4674.5.6[details] Available for editors
additional sourceHoffman, R. L. (1999). Checklist of the millipedes of North and Middle America. <em>Virginia Museum of Natural History, special publication.</em> 8: 1-584.[details]
additional sourceShear, W. A.; Leonard, W. P. (2007). Additions to the milliped family Caseyidae. I. Caseya richarti, n. sp., and new records of previously described species in the genus Caseya Cook and Collins 1895 (Diplopoda, Chordeumatida, Caseyidae). Zootaxa, 1524: 23-34[details]
additional sourceShelley, R. M.; Shear, W. A.; Leonard, W. P.; Ovaska, K. (2007). Diplopoda, Chordeumatida, Caseyidae, Opiona columbiana Chamberlin, 1951: distribution extensions into the Alexander Archipelago, Alaska, USA, Queen Charlotte Islands, British Columbia, Canada, and eastern & southern Washington State, USA. Check List, 3(1): 14-17[details]
additional sourceCausey, N. B. (1952). Four new chordeumoid millipeds from the United States. Proceedings of the Biological Society of Washington, 65: 111-118[details]
additional sourceCausey, N. B. (1963). Two new caseyid millipeds from California caves Chordeumida. Wasmann Journal of Biology, 21(2): 193-198[details]
additional sourceChamberlin, R. V. (1941). New western Millipeds. <em>Bulletin of the University of Utah, Biological Series.</em> 31(12): 1-23. Salt Lake City.[details]
additional sourceGardner, M. R.; Shelley, R. M. (1989). New records, species and genera of Caseyid Millipeds from the Pacific Coast of North America (Diplopoda: Chordeumatida: Caseyidae). Pan-Pacific Entomologist, 65(2): 177-268. SanFrancisco[details]
additional sourceGolovatch, S. I. (1980). [New forms of Diplopoda from the Soviet Far East and their zoogeographical relationship]. Zoologiceskij zurnal, 59(2): 199-207. Moskva[details]
additional sourceLoomis, H. F. (1966). Two new families and other North American Diplopoda of the suborder Chordeumidea. Proceedings of the Biological Society of Washington, 79: 221-230. Washington[details]
additional sourceMikhaljova, E. V. (1988). [New millipedes (Diplopoda) from the Kurile Islands] (in Russian, English summary). Zoologiceskij zurnal, 67(4): 620-621. Moskva[details]
additional sourceShelley, R. M. (1988). The millipeds of eastern Canada (Arthropoda: Diplopoda). Canadian Journal of Zoology, 66: 1638-1663 note: Placed Underwoodia polygama in synonymy under U. iuloides. [details]
additional sourceShelley, R. M. (1993). The milliped genus Underwoodia (Chordeumatida: Caseyidae). Canadian Journal of Zoology, 71: 168-176[details]
Present Inaccurate Introduced: alien Containing type locality