Yellow-spotted
Guides
Sigmocheir
Sigmocheir is a genus of flat-backed millipedes in the family Xystodesmidae, endemic to the foothills of the Sierra Nevada mountains in California. The genus contains three species: S. maculifer, S. calaveras, and S. furcata. All species share a distinctive color pattern of three lemon yellow spots per segment. The genus was established by R.V. Chamberlin in 1951, with a complex taxonomic history involving synonymies that were not fully resolved until 1995.