Nannaria serpens, Means & Hennen & Marek, 2021

Means, Jackson C., Hennen, Derek A. & Marek, Paul E., 2021, A revision of the minor species group in the millipede genus Nannaria Chamberlin, 1918 (Diplopoda, Polydesmida, Xystodesmidae), ZooKeys 1030, pp. 1-180 : 1

publication ID	https://dx.doi.org/10.3897/zookeys.1030.62544
persistent identifier	https://treatment.plazi.org/id/B84A3715-F652-5724-8ABB-1D27CEDBB7BD
treatment provided by	ZooKeys by Pensoft
scientific name	Nannaria serpens
status	sp. nov.

Treatment

Nannaria serpens View in CoL sp. nov. Figs 30 View Figure 30 , 31 Vernacular name: "The Serpentine Twisted-Claw Millipede" View Figure 31

Material examined.

Holotype: United States - Virginia • ♂; Carroll County, Dugspur, side of hill southeast of Blacksnake Meadery ; 36.7747°N, - 80.5420°W; elev. 822 m; 17 Sep. 2014; hand collected; J. Means leg.; VTEC MPE00202 View Materials . GoogleMaps

Paratypes: United States - Virginia • 1 ♂; same collection data as holotype; VMNH MPE00210 View Materials GoogleMaps .

Other material.

United States - North Carolina • 1 ♂; Ashe County, Three-Top Mtn. , 2 miles SE of Creston; 36.4144°N, - 81.6003°W; elev. 1219 m; 23 July 1963; R. Hoffman, Carico leg.; VMNH NAN0206 GoogleMaps • 2 ♂♂; Avery County, Grandfather Mtn. ; 36.1096°N, - 81.8114°W; C. M. leg.; VMNH NAN0205; SCAU GoogleMaps - Virginia • 1 ♂; Carroll County, Blacksnake Meadery , bottomland near creek at entrance; 36.7760°N, - 80.5446°W; elev. 767 m; 14 Sep. 2014; hand collected; J. Means leg.; VTEC MPE00274 View Materials GoogleMaps • 1 ♀; same collection data as preceding; VTEC MPE00204 View Materials GoogleMaps • 1 ♂; Floyd County, on hill edge by side of road across from Rocky Knob Picnic Area ; 36.8132°N, - 80.3495°W; elev. 970 m; 18 Sep. 2015; hand collected; J. Means, P. Marek, K. Lawler, P. Shorter, V. Wong leg.; VTEC MPE00817 View Materials GoogleMaps • 1 ♀; same collection data as preceding; VTEC MPE03717 View Materials GoogleMaps • 6 ♂♂; Floyd County, 6 mi SE Willis, Felker’s property, Rt. 726, Sorex study; 36.8009°N, - 80.3988°W; 7 June 1995; J. Anderson leg.; VMNH NAN0083 GoogleMaps • 3 ♂♂; same collection data as preceding; 20 June 1995; VMNH survey leg.; VMNH NAN0087 GoogleMaps • 2 ♂♂; same collection data as preceding; 7 June 1995; J. Anderson leg.; VMNH, NAN0089 GoogleMaps • 12 ♂♂; same collection data as preceding; 4 June 1993; VMNH NAN0207 GoogleMaps • 4 ♂♂; Floyd County, Buffalo Mountain N.A.P. south slope site, berleseate; 36.7958°N, - 80.4772°W; elev. 1067 m; 9 Aug. - 6 Sep. 2000; berlese; Joint Survey leg.; VMNH NAN0084 GoogleMaps • 1 ♂; same collection data as preceding; 23 Oct. 1996; VMNH survey leg.; VMNH NAN0088 GoogleMaps • 1 ♂; same collection data as preceding; 18 Aug.1991; VMNH NAN0090 GoogleMaps • 6 ♂♂; same collection data as preceding; 6 Sep.- 3 Oct. 2000; VMNH NAN0091 GoogleMaps • 1 ♂♂; same collection data as preceding; 12 Jan. 1986; R. Hoffman leg.; VMNH NAN0092 GoogleMaps • 6 ♂♂; same collection data as preceding; 10 Oct. - 8 Nov.; VMNH survey leg.; VMNH NAN0093 GoogleMaps • 30 ♂♂; same collection data as preceding; 23 June - 15 July 2001; VMNH NAN0094, 95 GoogleMaps • 9 ♂♂; same collection data as preceding; 23 Nov. 2000; Joint Survey; VMNH NAN0096 GoogleMaps • 24 ♂♂; same collection data as preceding; 23 Aug. - 29 Sep. 2001; VMNH survey leg.; VMNH NAN0097 GoogleMaps • 15 ♂♂; same collection data as preceding; 31 Oct. 2001; VMNH NAN0098 GoogleMaps • 5 ♂♂; same collection data as preceding; 19 Aug. 1992; VMNH NAN0208 GoogleMaps • 3 ♂♂; same collection data as preceding; 1 Apr. 1993; VMNH NAN0209 GoogleMaps • 1 ♂; same collection data as preceding; 3 Sep. 1967; R. Hoffman leg.; VMNH NAN0296 GoogleMaps • 1 ♂; Lee County, Powell Mountain at Va. Hy. 70, near crest; 36.6211°N, - 83.1062°W; 5 June 1986; R. Hoffman leg.; VMNH NAN0153 GoogleMaps • 2 ♂♂; Patrick County, Rock Castle Creek, Rock Castle Gorge Trail , Rocky Knob Recreation Center; 36.7858°N, - 80.3717°W; elev. 839 m; 21 Sep. 2015; hand collected; J. Means, P. Marek leg.; VTEC MPE00830 View Materials GoogleMaps , 833 • 1 ♂; Patrick County, side of hill by Fred Clifton Park ; 36.7181°N, - 80.3246°W; elev; 869 m; hand collected; J. Means, P. Shorter; leg.; VTEC MPE02610 View Materials GoogleMaps • 2 ♀; same collection data as preceding; VTEC MPE02629 View Materials GoogleMaps , 2630 • 3 ♂♂; Rockbridge County, vicinity of Natural Bridge , in dry limestone woods; 37.63°N, - 79.5433°W; 14 May 1989; R. Hoffman leg.; VMNH NAN0193. For detailed collection data see Suppl. material 7 GoogleMaps .

Diagnosis.

Adult males of Nannaria serpens sp. nov. are distinct from other Nannaria and the sympatric N. wilsoni , based on the following combination of characters: Gonopods. Gonopodal acropodite gently curving medially, not strongly curving medially as in N. wilsoni . Telopodite basal zone height <1/2 length of acropodite, not heavily reduced as in N. wilsoni . Acropodite with slightly swollen medial area (Fig. 30C View Figure 30 , red triangle) and small lobed medial flange (Fig. 30A View Figure 30 , red arrow) basal to apex. Tip directed medially, blunt and simple, not with folds, grooves, flanges as in N. wilsoni . Distal zone greatly reduced, not enlarged and curving caudomedially as in N. wilsoni . Prefemur with sinuous, cephalically-directed prefemoral process, not curving medially as in N. wilsoni . Prefemoral spine enlarged, cephalically directed, lacking secondary hump as in N. mcelroyorum sp. nov. Color. Tergites with bright orange paranotal spots (Fig. 31 View Figure 31 ). Dark brown background. Dorsum of collum smooth with orange margin.

Measurements.

♂ holotype (VTEC, MPE00202): BL = 30.9, IW = 2.4, ISW = 0.8, B11W = 4.7, B11H = 2.9; ♀ paratype (VTEC, MPE00204): BL = 29.4, CW = 3.4, IW = 1.8, ISW = 0.8, B11W = 4.4, B11H = 3.0.

Variation.

No known variation.

Distribution.

Known from southwestern Virginia and northwestern North Carolina, with disjunct populations ca. 112 km northeast at Natural Bridge State Park, and ca. 230 km southwest at Powell Mountain (North Carolina: Ashe and Avery counties; Virginia: Carroll, Floyd, Lee, Patrick and Rockbridge counties, Suppl. material 7; Fig. 126 View Figure 126 ). Distribution area: 2,280 km2; status: SRE.

Ecology.

Individuals of N. serpens sp. nov. have been collected from mesic hardwood forests composed of oak, maple, tuliptree, sassafras, and rhododendron, often found under leaves on wooded hillsides.

Etymology.

This species is named for both the serpentine nature of its prefemoral process, and for its type locality, Blacksnake Meadery. The specific name is derived from the Latin serpens meaning snake, and is a noun in apposition.

Type locality.

United States, Virginia, Carroll County, Dugspur, side of hill southeast of Blacksnake Meadery, 36.7747°N, - 80.5420°W.