website: <a href="http://www.cbif.gc.ca/itisca/">ITIS*<sup>ca</sup></a>;
website: <a href="http://www.cria.org.br/">CRIA-Brazil</a>;
database: NODC Taxonomic Code;
document: ITIS & Species 2000 Catalogue of Life Management Hierarchy; M. Ruggiero & D. Gordon, eds. 2013. Consensus Management Hierarchy for the ITIS & Species2000 Catalogue of Life. Contributors: Nicolas Bailly, Thierry Bourgoin, Richard Brusca, Thomas Cavalier-Smith, Daphne Fautin, Dennis Gordon, Gerald Guala, Michael Guiry, Paul Kirk, Elliot Lefkowitz, David Mabberly, David Maddison, Alan Paton, Michael Ruggiero, Peter Stevens, and Brian Tyndall
Guidetti, Roberto, and Roberto Bertolani 2005-02-01. Zootaxa, issue 845. . . 1-46. . Online edition ISSN is 1175-5334: http://www.mapress.com/zootaxa/.
Brusca, Richard C., and Gary J. Brusca 1990-01-01. Invertebrates. Sinauer Associates, Inc.. Sunderland, Massachusetts, USA. xiii + 992. 0-87893-098-1. .
Ramazzotti, G., and W. Maucci 1983-01-01. Memorie dell'Istituto Italiano di Idrobiologia Dott. Marco de Marchi, vol. 41. Istituto Italiano di Idrobiologia. Verbania Pallanza, Italy. 1012. . .