Nannaria bobmareki, 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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Nannaria ‘Blanton’: Marek and Bond 2006: 721.
Holotype: United States - Kentucky • ♂; Leslie County, Cawood Recreation Site , about 5.4 rd km N jct KY-221 & US-421; 36.9364°N, - 83.3729°W; elev. 417; 26 July 2006; hand collected; P. Marek and B. Marek leg.; VTEC SPC001019. GoogleMaps
Paratypes: United States - Kentucky • 1 ♂; same collection data as for holotype; VMNH SPC001025 GoogleMaps • 1 ♂; same collection data as for holotype; FMNH SPC001026 GoogleMaps • 1 ♂; same collection data as for holotype; VTEC SPC001027 GoogleMaps • 1 ♀; same collection data as for holotype; VTEC SPC001028 GoogleMaps .
United States - Kentucky • 6 ♂♂ and 1 ♀; Harlan County Pine Mtn., Blanton Forest State Nature Preserve , High Fork Br., nr campground ranger station; 36.8594°N, - 83.3823°W; elev. 411 m; 10 Aug. 2003; hand collected; P. Marek leg.; VTEC SPC000177-183 GoogleMaps • 1 ♂; Harlan County, N slope Pine Mtn., James E Bickford Nature Preserve, Pine Mtn. Settlement School; 36.9473°N, - 83.1807°W; elev. 587 m; 9 May 2011; hand colleted; P. Marek, C. Hall, D. Beamer, M. Beamer leg.; VTEC SPC001083. For detailed collection data see Suppl. material 7 GoogleMaps .
Adult males of Nannaria bobmareki sp. nov. are distinct from other Nannaria and the nearby N. aenigma , based on the following combination of characters: Gonopods. Gonopodal acropodite acicular, bending abruptly medially at 90° at tip, not slightly curving medially before tip as in N. fracta sp. nov. or gently curving medially as in N. aenigma . Distal zone quadrate, not short, rounded, as in N. fracta sp. nov., or long and serpentine as in N. aenigma . Acropodite with small, shelf-like medial flange just before tip (Fig. 75C View Figure 75 , red arrow). Prefemur with long, acicular prefemoral process with a pronounced, sharp prefemoral spine, partially fused to prefemoral process forming a ridge (Fig. 75C View Figure 75 , red triangle), not free from prefemoral process as in N. fracta sp. nov. or lacking as in N. aenigma . Telopodite basal zone ca. 1/2 length of acropodite, not > 1/2 length of acropodite as in N. fracta sp. nov. or ca. 1/6 length of acropodite as in N. aenigma . Telopodite basal zone with slight medial swelling (Fig. 75A View Figure 75 , red circle), not with pronounced medial swelling as in N. fracta sp. nov., or lacking as in N. aenigma . Color: Tergites with white paranotal spots (Fig. 76 View Figure 76 ). Dark brown background. Dorsum of collum smooth with white margin.
♂ holotype (VTEC, SPC001019): BL = 26.6, CW = 3.7, IW = 2.1, ISW = 0.9, B11W = 4.3, B11H = 2.8; ♀ paratype (VTEC, SPC001028): BL = 30.4, CW = 4.1, IW = 2.4, ISW = 1.2, B11W = 5.1, B11H = 3.6.
No known variation.
Known from a small triangular area in southeastern Kentucky (Kentucky: Harlan and Leslie counties; Suppl. material 7; Fig. 126 View Figure 126 ). Distribution area: 74 km2; status: MRE.
Nannaria bobmareki sp. nov. is the only species of Nannaria which is known to engage in swarming behavior. PEM observed a swarm of an estimated 400 N. bobmareki sp. nov. individuals covering 4 m2 in the Blanton Forest State Nature Preserve in August of 2003 (Fig. 77 View Figure 77 ). Nannaria are rarely found in high abundance, making swarming behavior especially notable. Additionally, N. bobmareki sp. nov. was encountered co-occurring with, but not participating in, a putative Müllerian mimicry ring composed of the xystodesmid species Apheloria polychroma Marek, Means & Hennen, 2018 and Brachoria flammipes Marek, 2010 ( Marek 2010).
This species is named after its co-collector, Bob Marek. The specific name is a genitive noun derived as a patronym.
United States, Kentucky, Leslie County, Cawood Recreation Site, about 5.4 rd km N jct KY-221 & US-421, 36.9364°N, - 83.3729°W.
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