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 8RVSL http://zoobank.org/96611C3A-FC68-48FB-8EA4-9B241C3C3D53 Means & Hennen & Marek, 2021 Means & Hennen & Marek 2021 Diplopoda Xystodesmidae Nannaria treatment-meta Animalia Nannaria tsuga Polydesmida 0 1 Arthropoda species tsuga sp. nov.  Material examined.     Holotype: United States-  Tennessee• ♂; Sullivan County, Bristol,  Steele CreekPark, along Hemlock Hollow Trail; 36.5703°N, - 82.2356°W; elev.  506 m; 11 June 2018; hand collected; D. Hennenleg.; VTEC MPE04047.     Paratypes: United States-  Tennessee• 2 ♂♂; same collection data as holotype; VTEC MPE04048, 4049 •  1 ♂; same collection data as holotype; VMNH MPE04311•  1 ♀; same collection data as holotype; VTEC MPE04043•  1 ♀; same collection data as holotype; VMNH MPE04050. For detailed collection data see Suppl. material 7.  Diagnosis. Adult males of  Nannaria tsugasp. nov. are distinct from other  Nannariaand the nearby  N. aenigma, based on the following combination of characters:  Gonopods.Gonopodal acropodite gently curving medially before apex, not nearly straight as in  N. ambulatrixsp. nov. Distal zone short, directed dorsomedially, with large, lobed lateral flange (Fig. 94A, red arrow), not with triangular lateral flange as in  N. ambulatrixsp. nov., or without flange and serpentine as in  N. aenigma. Telopodite basal zone height <1/2 length of acropodite, not enlarged, ca. 1/2 length as in  N. ambulatrixsp. nov., or reduced, ca. 1/6 length as in  N. aenigma. Prefemur with straight, laminate prefemoral process, separated widely from projected, with blunt prefemoral spine (Fig. 94A, red triangle), prefemoral process not arising dorsomedially from small, sharp prefemoral spine as in  N. ambulatrixsp. nov.  Color.Tergites with orange paranotal spots (Fig. 95). Black background. Dorsum of collum smooth with orange caudal margin.   Figure 94.  Nannaria tsugasp. nov. holotype ♂ (VTEC, MPE04047) left gonopod Aanterior view; red arrow indicates large, lobed lateral flange; red triangle indicates prefemoral process arising distally from prefemoral spine Bmedial view Cposterior view. Scale bar: 0.5 mm.   Figure 95.  Nannaria tsugasp. nov. holotype ♂ (VTEC, MPE04047) coloration. Scale bar: 4.0 mm.  Measurements. ♂ holotype (VTEC, MPE04047): BL = 33.9, CW = 4.3, IW = 2.0, ISW = 1.0, B11W = 5.2, B11H = 3.0; ♀ paratype (VTEC, MPE04043): BL = 31.1, CW = 3.8, IW = 2.6, ISW - 1.1, B11W = 4.9, B11H = 3.8.  Variation. No known variation.  Distribution. Known only from the type locality (Tennessee: Sullivan County, Suppl. material 7; Fig. 126). Distribution area: N/A; status: MRE.  Ecology. Individuals of  Nannaria tsugasp. nov. were collected from a mesic mixed hardwood and hemlock forest, composed of, in addition to hemlock, oak, beech, and buckeye. Individuals were found under moist litter on a hillside.  Etymology. This species is named for the habitat in which it was discovered, a hemlock grove. The specific name is derived from the name Tsuga Carriere, the genus containing hemlock trees, and is a noun in apposition.  Type locality. United States, Tennessee, Sullivan County, Bristol, Steele Creek Park, along Hemlock Hollow Trail, 36.5703°N, - 82.2356°W. 3071355476 MPE04047 2018-06-11 D. Hennen United States Sullivan County 506 36.5703 Steele Creek Park 6 -82.2356 Bristol Tennessee Holotype 3071355596 MPE04048 2021-01-01 2021-12-31 2021-01-01 D. Hennen United States Sullivan County 506 36.5703 Tennessee 6 -82.2356 Bristol 2 2 Tennessee Paratypes 3071355530 MPE04311 2021-01-01 2021-12-31 2021-01-01 D. Hennen United States Sullivan County 506 36.5703 Steele Creek Park 6 -82.2356 Bristol 1 1 Tennessee paratype 3071355569 MPE04043 2021-01-01 2021-12-31 2021-01-01 D. Hennen United States Sullivan County 506 36.5703 Steele Creek Park 6 -82.2356 Bristol 1 1 Tennessee paratype 3071355440 MPE04050 2021-01-01 2021-12-31 2021-01-01 D. Hennen United States Sullivan County 506 36.5703 Steele Creek Park 6 -82.2356 Bristol 1 1 Tennessee paratype