Nannaria daptria, 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

Nannaria daptria sp. nov. Figs 98 , 99 Vernacular name: "The Picnicking Twisted-Claw Millipede"

Material examined.

Holotype: United States - Tennessee • ♂; Tennessee, Greene County, Paint Creek Corridor , Overlook Picnic Area , forest across road; 35.9777°N, - 82.8478°W; elev. 500 m; 16 June 2018; hand collected; D. Hennen leg.; VTEC MPE04156 . For detailed collection data see Suppl. material 7.

Diagnosis.

Adult males of Nannaria daptria sp. nov. are distinct from other Nannaria and the nearby N. scutellaria , based on the following combination of characters: Gonopods. Gonopodal acropodite gently curving medially throughout, not straight with 90° medial bend as in N. scutellaria . Tip blunt, with small, triangular lateral and medial flanges (Fig. 98A , red arrows), not simple as in N. minor . Acropodite swollen before apex (Fig. 98A , red triangle). Acropodite lacking tooth-like medial flange of N. minor , or acicular medial flange of N. scutellaria . Prefemur with long, thin, medially curving prefemoral process, not laterally curving as in N. minor and N. scutellaria . Prefemoral spine prominent, claw-like, curving cephalically, not small as in N. minor . Telopodite basal zone> 1/3 length of acropodite, not <1/3 as in N. scutellaria . Color. Tergites with orange paranotal spots (Fig. 99 ). Light brown to black background. Dorsum of collum smooth with orange and white margin.

Measurements.

♂ holotype (VTEC, MPE04156): BL = 30.6, CW = 3.7, IW = 2.0, ISW = 0.8, B11W = 4.8, B11H = 3.4.

Variation.

No known variation.

Distribution.

Known only from the type locality (Tennessee: Greene County, Suppl. material 7; Fig. 126 ). Distribution area: N/A; status: MRE.

Ecology.

Nannaria daptria sp. nov. was collected from mesic, broadleaved forests composed of oak, maple, rhododendron, and hemlock, found under deciduous leaf litter in sandy soil.

Etymology.

This species was named for the relaxing lunch that directly preceded its discovery. The specific name is a noun in apposition derived from the Greek daptria, meaning ‘eater.’

Type locality.

United States, Tennessee, Greene County, Paint Creek Corridor, Overlook Picnic Area, forest across road; 35.9777°N, - 82.8478°W.

Figures

Figure 98. Nannaria daptria sp. nov. holotype ♂ (VTEC, MPE 04156) left gonopod A anterior view; red arrows indicate medial and lateral flanges; red triangle indicates medial swelling B medial view C posterior view. Scale bar: 0.5 mm.

Figure 99. Nannaria daptria sp. nov. holotype ♂ (VTEC, MPE 04156) coloration. Scale bar: 4.0 mm.

Figure 126. Distribution map of Nannaria minor species group collection localities in the central Appalachians.