@misc{ShelleySmith2017,
  author    = {Rowland M. Shelley and Jamie M. Smith},
  title     = {Parajulid milliped studies XII: Initial assessment of Ptyoiulus Cook 1895 and neotype designations for Julus impressus Say 1821 and J. montanus Cope 1869 (Diplopoda: Julida)},
  booktitle = {Insecta mundi : a journal of world insect systematics},
  issn      = {1942-1354},
  series    = {Insecta Mundi},
  number    = {522},
  type      = {periodicalpart},
  pages     = {1 -- 22},
  year        = {2017},
}