basis of record
Deprez, T. et al. (2005). NeMys - Generic Taxonomic Database System on Mysida and Nematoda. World Wide Web electronic publication. , available online at http://nemys.ugent.be [details]
From editor or global species database
Taxonomy Penzancia agilis acc. Andrassy 2005 (Free-livng nematodes of Hungary I. Therein Andrassy has transferred Theristus species to e.g. Penzancia Mesotheristus, Cylindrotheristus, Mongolotheristus.
[details]