Nannaria minor
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Ordo: Polydesmida
Familia: Xystodesmidae
Genus: Nannaria
Name
Nannaria minor Chamberlin, 1918 – Wikispecies link – Pensoft Profile
- Nannaria minor Chamberlin, 1918: 124. Attems 1938[1]: 199. Brimley 1938[2]: 499. Chamberlin and Hoffman 1958[3]: 41. Hoffman 1964[4]: 11. Wray 1967[5]: 152. Hoffman 1999[6]: 367. Shelley 2000[7]: 196. Marek et al. 2014[8]: 37. Means et al. 2021[9]: 16, S71.
Material examined
United States – North Carolina • 1 ♂; Ashe County, West Jefferson, Mount Jefferson State Natural Area, lower loop of Rhododendron Trail; 36.4032°N, -81.4646°W; elev. 1388 m); 10 Oct. 2018; hand collected; D. Hennen leg.; VTEC MPE04388 • 1 ♀; same collection data as preceding; VTEC MPE04389 • 3 ♂♂; Mitchell County, Little Switzerland, Grassy Creek Falls; 35.8561°N, -82.0876°W; elev. 995 m; hand collected; D. Hennen leg.; VTEC MPE04391–93 • 2 ♀♀; same collection data as preceding; VTEC, MPE04394, 4395 • 6 ♂♂; Mitchell County, Crabtree Meadows Rec. Area, B.R.P.; 35.8996°N, -82.2147°W; elev. 1036–1097 m; 30 Oct. 1971; R. Hoffman, Knight leg.; VMNH NAN0200 • 1 ♂; Mitchell County, 1000’ S of Sam’s Gap, on U.S. Hy. 23; 35.9385°N, -82.5632°W; 2 Aug. 1962; R. Hoffman leg.; VMNH NAN0202 • 1 ♂; Mitchell County, Bakersville, around garage at home; 36.0156°N, -82.1587°W; 13 Feb. 1976; D. Terrel leg.; NCSM NAN0554 • 1 ♂; Mitchell County, summit of Roan Mtn., in spruce-fir forest; 36.1039°N, -82.1219°W; elev. 1829 m; 24 July 1975; R. Shelley, J. Clamp leg.; NCSM NAN0502 • 4 ♂♂♀♀; Watauga County, 2.8 WNW Blowing Rock, Julian Price Memorial Park, off Blue Ridge Pkwy.; 36.1422°N, -81.7456°W; 9 Sep. 1973; R. Shelley leg.; NCSM NAN0520; SCAU – Tennessee • 1 ♀; Carter County, northeast of Hampton, Watauga Point Rec Area, trail from parking lot; 36.3199°N, -82.0834°W; elev. 632 m; 12 June 2018; hand collected; D. Hennen leg.; VTEC MPE04060 • 1 ♂; Carter County, Hampton, Cherokee National Forest, Laurel Creek Falls Trail; 36.2652°N, -82.1235°W; elev. 768 m; 12 June 2018; hand collected; D. Hennen leg.; VTEC MPE04074 • 3 ♀♀; Carter County, Roan Mountain, Roan Mountain State Park, Blue 2 Trail; 36.1674°N, -82.0984°W; elev. 872 m; 12 June 2018; D. Hennen leg.; VTEC MPE04080–82 • 3 ♂♂; Carter County, The Laurels Rec Area, Cherokee National Forest; 36.2476°N, -82.2696°W; elev. 584 m; 13 June 2018; D. Hennen leg.; VTEC MPE04089, 4090, 4226 • 2 ♀♀; same collection data as preceding; VTEC, MPE04091, 4092 • 1 ♂; Carter County, south of Alizabethton, at pull off on Route 362; 36.2651°N, -82.2300°W; elev. 620 m; 25 May 2016; hand collected; J. Means, D. Hennen leg.; VTEC MPE01249 • 8 ♀♀; same collection data as preceding; VTEC MPE01252, 1253, 1296, 1302, 1303, 1313, 1314, 2061 • 1 ♂; Carter County, Doe R. Bluff, 1 mile NW of Hampton; 36.2944°N, -82.1855°W; 3 May 1951; L. Hubricht leg.; VMNH NAN0293 • 1 ♂; Loudon County, Lenoir City, basement of house; 35.7972°N, -84.2561°W; 10 Dec. 1971; W. Tolbert leg.; VMNH NAN0144 • 1 ♀; Unicoi County, Unicoi, Limestone Cove Rec Area; 36.1742°N, -82.2982°W; elev. 697 m; hand collected; D. Hennen leg.; VTEC MPE04103 • 3 ♀♀; Unicoi County, Erwin, Cherokee National Forest, Rock Creek Falls Rec Area, Rock Creek Falls Trail; 36.1389°N, -82.3468°W; elev. 704 m; 13 June 2018; hand collected; D. Hennen leg.; VTEC MPE04107, 4108, 4231 • 2 ♂♂; Unicoi County, 10.7 air km from Erwin, Cherokee National Forest, beginning of trail to Sill Creek Falls, off Clark Creek Road; 36.1281°N, -82.5340°W; elev. 559; 14 June 2018; hand collected; D. Hennen leg.; VTEC MPE04127, 4128 • 3 ♀♀; Unicoi County, Flag Pond, Rocky Fork State Park, Rocky Fork Trail; 36.0482°N, -82.5615°W; elev. 740 m; hand collected; D. Hennen leg.; VTEC MPE4133–35 • 1 ♂; Unicoi County, 3 SW Erwin, Unaka Springs Rd., 1 mi jct. Chestoa Rd.; 36.0931°N, -82.4396°W; 1 Apr. 2002; A. Gagan leg.; NCSM NAN0476 • 2 ♀♀; Unicoi County, Erwin, Cherokee National Forest, Rock Creek Falls Rec Area, Rock Creek Falls Trail; 36.1389°N, -82.3468°W; 13 June 2018; hand collected; D. Hennen leg.; VTEC MPE04108, 4231 • 1 ♀; Washington County, Johnson City, Buffalo Mountain Park, White Rock Lower Loop; 36.2770°N, -82.3461°W; elev. 717 m; 13 June 2018; D. Hennen leg.; VTEC MPE04100. For detailed collection data see Suppl. material 7.
Diagnosis
Adult males of Nannaria minor are distinct from other Nannaria, and the nearby N. aenigma, based on the following combination of characters: Gonopods. Gonopodal acropodite gently curving medially throughout with extremely short, blunt distal zone, not with serpentine distal zone as in N. aenigma. Acropodite with small, tooth-like medial flange near apex (Fig. 106A, red arrow), not with lobed medial flange as in N. mcelroyorum sp. nov. Prefemur with long, thin, acicular prefemoral process slightly curving laterally, not sinuous, cephalically directed as in N. mcelroyorum sp. nov. Prefemoral spine small, curving cephalically (Fig. 106B, red triangle), without secondary hump as in N. mcelroyorum sp. nov. Telopodite basal zone height < 1/2 length of acropodite, not ca. 1/2 length as in N. mcelroyorum sp. nov., or ca. 1/6 length as in N. aenigma. Color. Tergites with hot pink/orange paranotal spots (Fig. 107). Light brown to black background. Dorsum of collum smooth with orange margin.
Measurements
♂ (VTEC, MPE01249): BL = 31.8, CW = 3.9, IW = 2.1, ISW = 0.9, B11W = 4.6, B11H = 3.1; ♀ (VTEC, MPE01253): BL = 31.2, CW = 3.7, IW = 2.1, ISW = 1.0, B11W = 5.1, B11H = 3.5.
Variation
Notable variation found in N. minor is the length and general directionality of the prefemoral process; a specimen collected from the summit of Roan Mountain in North Carolina (NAN0502) has a short and somewhat curving prefemoral process, while specimens from Sam’s Gap in Tennessee (NAN0202) have long prefemoral processes that do not cross the acropodite in the anterior view, and the specimen illustrated by Hoffman (1964[4]: 32) has a medially directed prefemoral tip.
Distribution
Known from the Southern Appalachians, primarily along the northern half of the North Carolina and Tennessee border (North Carolina: Ashe, Madison, Mitchell, Watauga, and Yancey counties; Tennessee: Carter, Loudon, and Unicoi counties; Virginia: Carroll County, Suppl. material 7; Fig. 126). Distribution area: 5,671 km2; status: SRE.
Ecology
Individuals of Nannaria minor have been collected from mesic deciduous forests, often dominated by maple, oak, hemlock, and rhododendron, typically under 1–2 cm soil and/or leaf litter.
Etymology
Chamberlin (1918)[10] gave no etymology for his name, N. minor, though it is reasonable to assume that he named both the genus and the species for its small size in relation to other xystodesmids. Why Chamberlin would feel the need to reiterate the small nature of the species is unknown. One possibility is that Chamberlin may have chosen the specific name after the Latin word minor for ‘smaller’ to differentiate it from a second species he described in the same paper N. media Chamberlin, 1918 (now Boraria stricta) which was slightly larger than N. minor, but not as large as the third species he described, N. infesta (now Howellaria infesta). Thus, minor was the smallest of the three species, media (from the Latin medi- meaning middle) was the middle-sized species, and infesta was the largest. If this hypothesis is true it is a mystery to the authors why Chamberlin broke the pattern with infesta, though the fungal infestation of the infesta type may have offered up too good of a species epithet to pass up.
Type locality
United States, Tennessee, Burbank.
Notes
In the original publication, Chamberlin (1918[10], 125) mentions that two specimens were collected by R. Thaxter: a male, which Chamberlin designates as the type, and a female.
Taxon Treatment
- Means, J; Hennen, D; Marek, P; 2021: A revision of the minor species group in the millipede genus Nannaria Chamberlin, 1918 (Diplopoda, Polydesmida, Xystodesmidae) ZooKeys, 1030: 1-180. doi
Images
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Other References
- ↑ Attems C (1938) Polydesmoidea II. Fam. Leptodesmidae, Platyrhachidae, Oxydesmidae, Gomphodesmidae.Das Tierreich69: 1–487. https://doi.org/10.1515/9783111430645-003
- ↑ Brimley C (1938) The Insects of North Carolina.Division of Entomology, North Carolina Department of Agriculture, Raleigh, 560 pp.
- ↑ Chamberlin R, Hoffman R (1958) Checklist of the millipeds of North America.United States National Museum Bulletin212: 1–236. https://doi.org/10.5479/si.03629236.212
- ↑ 4.0 4.1 Hoffman R (1964) The status of Fontaria pulchella Bollman, with the proposal of a new genus and tribe in the diplopod family Xystodesmidae.Proceedings of the Biological Society of Washington77: 25–34. https://www.biodiversitylibrary.org/page/34605254
- ↑ Wray D (1967) Insects of North Carolina, 3rd Supplement.North Carolina Department of Agriculture, Raleigh, 181 pp.
- ↑ Hoffman R (1999) Checklist of the millipeds of North and Middle America.Virginia Museum of Natural History Special Publication Number8: 1–584.
- ↑ Shelley R (2000) Annotated checklist of the millipeds of North Carolina (Arthropoda: Diplopoda), with remarks on the genus Sigmoria Chamberlin (Polydesmida: Xystodesmidae).The Journal of the Elisha Mitchell Scientific Society116: 177–205. https://www.jstor.org/stable/24335390
- ↑ Marek P, Tanabe T, Sierwald P (2014) A species catalog of the millipede family Xystodesmidae (Diplopoda: Polydesmida).Virginia Museum of Natural History Publications17: 1–117.
- ↑ Means J, Hennen D, Tanabe T, Marek P (2021) Phylogenetic systematics of the millipede family Xystodesmidae.Insect Systematics and Diversity5: 1–26. https://doi.org/10.1093/isd/ixab003
- ↑ 10.0 10.1 Chamberlin R (1918) New polydesmoid diplopods from Tennessee and Mississippi.Psyche25: 122–127. https://doi.org/10.1155/1918/24852
