Myriapods of North Carolina
Scientific Name:
Common Name:
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View PDFXystodesmidae Members: 2 NC Records

Sigmoria nigrimontis nigrimontis (Chamberlin, 1947) - No Common Name

Class: Diplopoda (Millipedes) Family: Xystodesmidae Checklist Number: 495.01
Species Status: The type locality given by Chamberlin (1947) was Black Mountain in Buncombe Ccounty. However, Shelley (1981) believed that the original specimens came from a much higher elevation, probably north of the town of Black Mountain and located within the Black Mountains range.
Field Guide Descriptions: Online Photographs: BugGuide, iNaturalist, Google                                                                                 
Distribution in North Carolina
Distribution: The records given by Shelley (1981) include the Black Mountains range and adjoining portions of the Blue Ridge
County Map: Clicking on a county returns the records for the species in that county.
 High Mountains (HM) ≥ 4,000 ft.
 Low Mountains (LM) < 4,000 ft.
 Piedmont (Pd)
 Coastal Plain (CP)

Click on graph to enlarge
Habitats and Life History
Habitats: Shelley (1981) states that is species primarily inhabits coves but also ranges up into Spruce-fir Forests, including those on the summit of Mt. Mitchell
See also Habitat Account for General Montane Mesic Forests
Status in North Carolina
Natural Heritage Program Status: [SR]
Natural Heritage Program Ranks: [GNR] [SHS3]
State Protection:
Comments: This subspecies appears to be known only from historic records; 1978 was the most recent record given by Shelley (1981). Although endemic to the Black Mountains, Shelley lists records for a fairly large number of sites, indicating that it was at least fairly common in that region back in the 1970s. More surveys are needed to confirm its current status.