A revision of the minor species group in the millipede genus Nannaria Chamberlin, 1918 (Diplopoda, Polydesmida, Xystodesmidae) Means, Jackson C. Hennen, Derek A. Marek, Paul E. ZooKeys 2021 2021-04-13 1030 1 180 8RVX9 http://zoobank.org/5CF65D66-4448-4ADA-9C6E-086B1614C70B Means & Hennen & Marek, 2021 Means & Hennen & Marek 2021 Diplopoda Xystodesmidae Nannaria treatment-meta Animalia Nannaria piccolia Polydesmida 0 1 Arthropoda species piccolia sp. nov.  Material examined.     Holotype: United States-  Virginia• ♂; Rockbridge County, 1.5 air miles NW of Collierstown, Lake Robertson Recreation Area, Mountain Trail, hillside near Hawks Creekstream crossing; 37.8065°N, - 79.6152°W; elev.  457 m; 20 Feb. 2018; hand collected; J. Means, D. Hennenleg.; VTEC MPE03809.     Paratypes: United States-  Virginia• 1 ♂; same collection data as holotype; VTEC MPE03812•  1 ♂; same collection data as holotype; VMNH MPE03816•  2 ♀♀; same collection data as holotype; VTEC MPE03811, 17 •  1 ♀; same collection data as holotype; VMNH MPE03818.  Other material.   United States-  Virginia• 1 ♂; Alleghany County, Longdale Mines; 37.8083°N, - 79.6834°W; 15 Sep. 1948; R. Hoffmanleg.; VMNH NAN0645•  1 ♂; Rockbridge County, Rockbridge Alum Springs,  8 miSW Goshen; 37.9086°N, - 79.6123°W; 1 June 1970; Newmanleg.; VMNH NAN0647. Fordetailed collection data see Suppl.material 7.  Diagnosis. Adult males of  Nannaria piccoliasp. nov. are distinct from other  Nannariaand the sympatric  N. shenandoa, based on the following combination of characters:  Gonopods.Gonopodal acropodite gradually curving medially before apex, not straight as in  N. shenandoa. Distal zone short, bent medially forming 130° angle with acropodite (Fig. 17). Telopodite basal zone> 1/3 length of acropodite, not <1/3 as in  N. fowleriand  N. shenandoa. Tip and distal zone simple, rectangular, blunt, <1/8 length of acropodite, not large, curving with flange as in  N. shenandoa. Prefemoral process short, laterally curved, arising dorsomedially from prefemoral spine, not long, serpentine, paralleling curve of acropodite as in  N. fowleri, or crossing over acropodite as in  N. shenandoa. Space between prefemoral process and acropodite wider than telopodite basal zone, not thinner as in  N. fowleri. Prefemur with stout, tooth-like prefemoral spine (Fig. 17C, red arrow).  Color.Tergites with either orange or white paranotal spots (Fig. 18A, B) and occasionally orange paranotal spots with orange stripes (Fig. 18 C). Brown to black background. Dorsum of collum smooth with either orange or white margin, depending on color morph.   Figure 17.  Nannaria piccoliasp. nov. holotype ♂ (VTEC, MPE03809) left gonopod Aanterior view Bmedial view Cposterior view; red arrow indicates stout, tooth-like prefemoral spine. Scale bar: 0.5 mm.   Figure 18.  Nannaria piccoliasp. nov. coloration, Aholotype ♂ (VTEC, MPE03809) orange paranotal spots Bparatype ♂ (VTEC, MPE03812) white paranotal spots Cparatype ♀ (VTEC, MPE03811) orange paranotal spots with orange stripes. Scale bar: 4.0 mm.  Measurements. ♂ holotype (VTEC, MPE03809): BL = 26.4, CW = 3.9, IW = 2.4, ISW = 0.8, B11W = 5.0, B11H = 2.9; ♀ paratype (VTEC, MPE03811): BL = 36.5, CW = 4.3, IW = 2.7, ISW = 0.9, B11W = 5.5, B11H = 4.0  Variation. No known variation.  Distribution. Known from a small area in western Virginia (Virginia: Allegany and Rockbridge counties, Suppl. material 7; Fig. 126). Distribution area: 35 km2; status: MRE.  Ecology. Individuals of  Nannaria piccoliasp. nov. have been collected from mesic deciduous forests dominated by oak, maple, and hickory, typically found under leaf litter on hillsides.  Etymology. Named as a gesture of goodwill to the community of lichen specialists, in honor of the lichen species  Piccolia nannaria(Tuck.) Lendemer & Beeching. The specific epithet is a noun in apposition.  Type locality. United States, Virginia, Rockbridge County, 1.5 air miles NW of Collierstown, Lake Robertson Recreation Area, Mountain Trail, hillside near Hawks Creek stream crossing, 37.8065°N, - 79.6152°W. 3071355620 MPE03809 2018-02-20 J. Means, D. Hennen United States Rockbridge County 457 37.8065 Lake Robertson Recreation Area 6 -79.6152 Collierstown Virginia Holotype 3071355481 MPE03812 2021-01-01 2021-12-31 2021-01-01 J. Means & D. Hennen United States Rockbridge County 457 37.8065 Virginia 6 -79.6152 Collierstown 1 1 Virginia Paratypes 3071355445 MPE03816 2021-01-01 2021-12-31 2021-01-01 J. Means & D. Hennen United States Rockbridge County 457 37.8065 Lake Robertson Recreation Area 6 -79.6152 Collierstown 1 1 Virginia paratype 3071355358 MPE03811 2021-01-01 2021-12-31 2021-01-01 J. Means & D. Hennen United States Rockbridge County 457 37.8065 Lake Robertson Recreation Area 6 -79.6152 Collierstown 2 2 Virginia paratype 3071355516 MPE03818 2021-01-01 2021-12-31 2021-01-01 J. Means & D. Hennen United States Rockbridge County 457 37.8065 Lake Robertson Recreation Area 6 -79.6152 Collierstown 1 1 Virginia paratype 3071355377 1948-09-15 R. Hoffman United States Alleghany County 37.8083 Longdale Mines 6 -79.6834 1 1 Virginia 3071355432 1970-06-01 Newman, For, Suppl. United States Rockbridge County 37.9086 Rockbridge Alum Springs 6 -79.6123 1 1 Virginia