Abstract
Petra sierwaldae, n. gen., n. sp. is described from males and females collected at four localities in Kootenai County, Idaho, USA. The new genus is defined by its unique gonopod and ninth leg anatomy, a notched collum and single ommatidium on each side of the head, and lacking third coxal flasks as well as having modified fifth coxae.
References
Bollman, C.H. (1888) Notes upon a collection of Myriapoda from East Tennessee, with a description of a new genus and six new species. Annals of the New York Academy of Sciences, 4, 106–112. https://doi.org/10.1111/j.1749-6632.1889.tb57035.x
Bollman, C.H. (1893) The Myriapoda of the United States. United States National Museum Bulletin, 43, 1–210.
Brunsfeld, S.J., Sullivan, J.J., Soltis, D.E. & Soltis, P.S. (2001) Comparative phylogeography of Northwestern North America: A synthesis. In: Silvertown, J. & Antonovics, J. (Eds.), Integrating Ecological and Evolutionary Processes in a Special Context. Blackwell Science, Oxford, pp. 319–339.
Chamberlin, R.V. (1941) New western millipedes. Bulletin of the University of Utah, 31 (2), Biological Series, 6, 3–23.
Richart, C.H. & Hedin, M. (2013) Three new species in the harvestmen genus Acuclavella (Opiliones, Dyspnoi, Ischyropsalidoidea), including description of male Acuclavella quattuor Shear 1986. ZooKeys, 311, 19–68. https://doi.org/10.3897/zookeys.311.2920
Shear, W.A. (2020) The millipede family Striariidae Bollman, 1893. I. Introduction to the family, synonymy of Vaferaria Causey with Amplaria Chamberlin, the new subfamily Trisariinae, the new genus Trisaria, and three new species (Diplopoda, Chordeumatida, Striarioidea). Zootaxa, 4758 (2), 275–295. https://doi.org/10.11646/zootaxa.3109.1.1
Shear, W.A. (2021a) The millipede family Striariidae Bollman, 1893. II. New records and species of the genus Amplaria Chamberlin, 1941 (Diplopoda, Chordeumatida, Striarioidea). Zootaxa, 4908 (2), 205–224. https://doi.org/10.11646/zootaxa.4908.2.3
Shear, W.A. (2021b) The millipede family Striariidae Bollman, 1893. III. Four new species of Striaria Bollman, 1888 (Diplopoda, Chordeumatida, Striarioidea). Zootaxa, 4920 (3), 395–406. https://doi.org/10.11646/zootaxa.4920.3.5
Shear, W.A. & Marek, P.E. (2022a) The millipede family Striariidae Bollman, 1893. V. Stegostriaria dulcidormus, n. gen., n. sp., Kentrostriaria ohara, n. gen., n. sp., and the convergent evolution of exaggerated metazonital crests (Diplopoda, Chordeumatida, Striarioidea). Zootaxa, 5094 (3), 461–472. https://doi.org/10.11646/zootaxa.5094.3.5
Shear, W. A. & Marek, P. E. (2022b) The millipede family Striariidae Bollman, 1893. VI. Six new genera and thirteen new species from western North America (Diplopoda, Chordematida, Striarioidea). Zootaxa, 5250 (6), 501-531. https://doi.org/10.11646/zootaxa.5205.6.1
Shear, W.A., Nosler, P. & Marek, P.E. (2022) The millipede family Striariidae Bollman, 1893. IV. Amplaria oedipus, n. sp., with a secondary sexual modification of males unique among millipedes (Diplopoda, Chordeumatida, Striarioidea). Zootaxa, 5099 (1), 137–145. https://doi.org/10.11646/zootaxa.5099.1.7
Shelley, R.M. (1990) A new milliped of the genus Metaxycheir from the Pacific coast of Canada (Polydesmida: Xystodesmidae), with remarks on the tribe Chonaphini and the western Canadian and Alaskan diplopod fauna. Canadian Journal of Zoology, 68 (11), 2310–2322. https://doi.org/10.1139/z90-323