Sigmoria (Rudiloria) trimaculata trimaculata (Wood 1864) . CANADA: Québec: Carillon Island (Ottawa River), 6M, 2 F, 19 September 1964, W. Hoek, D. Johnstone (LEM); and Ile de Montréal, Ste.-Anne-de-Bellevue, Morgan’s Woods, 1M, 17 May 1952, A. C. Sheppard, and 1M, 1 F, July 1965, A. Vlasek (LEM). New Provincial Record for the (sub)family, genus, and species. USA: New York: Kings Co., Brooklyn, 1M, 1885 (NMNH). Vermont. Addison Co., Memorial State Park, 1M, 23 April 1976, R. Davidson (UVT). Bennington Co., Beartown, 1M, 19 June 1954, F. and P. Rindge (AMNH). Caledonia Co., St. Johnsbury, 2M, 4 F, July 1913 (MCZ). Chittenden Co., Burlington, 1M, 1868, J. B. Perry (MCZ). Orange Co., Chelsea, 1M, F (MCZ). Rutland Co., Tweed R., 1M, 10 September 1934 (UMN). Windsor Co., Ascutney, Mt. Escutenary, 1M (MCZ). New State Record for the (sub)family, genus, and species.

Published as part of Shelley, Rowland M. & Smith, Jamie M., 2018, Expanded concept and revised taxonomy of the milliped family Xystodesmidae Cook, 1895 (Polydesmida: Leptodesmidea: Xystodesmoidea): incorporations of Euryuridae Pocock, 1909 and Eurymerodesmidae Causey, 1951, taxon revivals / proposals / transferrals, and a distributional update, pp. 1-41 in Insecta Mundi 660 on page 18, DOI: 10.5281/zenodo.3709976