Nannaria caverna, 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

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scientific name

Nannaria caverna

sp. nov.

Nannaria caverna   sp. nov. Figs 24 View Figure 24 , 25 Vernacular name: "The Carter Caves Twisted-Claw Millipede" View Figure 25

Material examined.

Holotype: United States - Kentucky • ♂; Carter Co., Carter Caves State Park ; 38.3738°N, - 83.1142°W; 24 Sep. 2017; hand collected; J. Means, D. Hennen leg.; VTEC MPE03139 View Materials . GoogleMaps  

Paratypes: United States - Kentucky • 1 ♂; same collection data as holotype; VTEC MPE03157 View Materials GoogleMaps   1 ♀; same collection data as holotype; VTEC MPE03158 View Materials GoogleMaps   1 ♂; same collection data as holotype; VMNH MPE03160 View Materials GoogleMaps   1 ♀; same collection data as holotye; VMNH MPE03159 View Materials GoogleMaps   . For detailed collection data see Suppl. material 7.


Adult males of Nannaria caverna   sp. nov. are distinct from other Nannaria   and nearby N. shenandoa   , based on the following combination of characters: Gonopods. Gonopodal acropodite linear, bent medially forming 130° angle with telopodite basal zone bent medially at tip, not continually curving throughout as N. serpens   sp. nov. and N. shenandoa   . Tip simple, rectangular, without laminate flanges as in N. shenandoa   . Telopodite basal zone tall, > 1/2 length of acropodite, not < 1/2 as in N. serpens   sp. nov. and N. shenandoa   . Prefemur with sinuous, ventrally directed prefemoral process, bent at a 90° angle, arising from large, pronounced prefemoral spine (Fig. 24B View Figure 24 , red arrow), not directed cephalically as in N. serpens   sp. nov., or curving laterally as in N. shenandoa   . Color. Tergites with light orange paranotal spots (Fig. 25 View Figure 25 ). Light grey background, likely due to teneral condition of specimens. Collum smooth with orange margin.


♂ holotype (VTEC, MPE03139): BL = 24.7, CW = 3.8, IW = 2.5, ISW = 0.8, B11W = 4.2, B11H = 2.9. ♀ paratype ( VMNH, MPE03159): BL = 25.7, CW = 3.2, IW = 2.2, ISW = 1.2, B11W = 4.0, B11H = 2.9.


No known variation.


Known only from the type locality (Kentucky: Carter Caves State Park; Suppl. material 7; Fig. 127 View Figure 127 ). Distribution area: N/A; status: MRE.


Individuals of N. caverna   sp. nov. were collected as they emerged from hardpacked soil on the edge of a creek running through Carter Caves State Park. The surrounding forest was made up of hardwood trees and rhododendron thickets.


This species is named for its type locality. The specific name is a noun in apposition from the Latin caverna for cave.

Type locality.

United States, Kentucky, Carter Co., Carter Caves State Park, 38.3738°N, - 83.1142°W.