A revision of the minor species group in the millipede genus Nannaria Chamberlin, 1918 (Diplopoda, Polydesmida, Xystodesmidae) Author Means, Jackson C. https://orcid.org/0000-0001-7377-0696 Virginia Tech, Department of Entomology, Blacksburg, Virginia 24061, USA mjacks4@vt.edu Author Hennen, Derek A. https://orcid.org/0000-0001-7005-1151 Virginia Tech, Department of Entomology, Blacksburg, Virginia 24061, USA Author Marek, Paul E. https://orcid.org/0000-0002-7048-2514 Virginia Tech, Department of Entomology, Blacksburg, Virginia 24061, USA text ZooKeys 2021 2021-04-13 1030 1 180 http://dx.doi.org/10.3897/zookeys.1030.62544 journal article http://dx.doi.org/10.3897/zookeys.1030.62544 1313-2970-1030-1 875199397EEE5F7898EA1DB25DA62D25 Nannaria "Ridgeway" incertae sedis Fig. 124 Material examined. United States - Virginia • 1 ♂ ; Henry County , Ridgeway ; 36.5766°N , - 79.8586°W ; 27 Nov. 1961 ; R. Hoffman leg.; VMNH NAN0269. For detailed collection data see Suppl. material 7 . Hypothesized placement. Nannaria "Ridgeway" specimens are hypothesized to be closely related to Nannaria "Moores Springs" based on close geographic proximity and the following combination of gonopodal characters. Acropodite simple, directed medially. Telopodite basal zone with raised ridge (Fig. 124A , red arrow). Prefemoral spine pronounced and claw-like (Fig. 124B , red triangle). Nannaria "Ridgeway" specimens differ from "Moores Springs" based on the following combination of gonopodal characters: Prefemoral process small, curving ventrolaterally, not long, nearly straight as in "Moores Springs." Acropodite with slight medial swelling (Fig. 124A , red oval), lacking in "Moores Springs." Figure 124. Nannaria "Ridgeway" incertae sedis ♂ (VMNH, NAN0269) left gonopod A anterior view, red arrow indicates raised basal ridge, red oval indicates acropodite medial swelling B medial view; red triangle indicates hook-liked prefemoral spine C posterior view. Scale bar: 0.5 mm.