ISSN: 0067-8546 ( Print )  2666-0644 ( Online ) 
Publishers, Sponsors & Affiliations: Brill Academic Publishers ,  National Museum of Natural History Naturalis, Leiden

ISSN: 1383-4517 ( Print )  1875-9866 ( Online ) 
Publishers, Sponsors & Affiliations: Brill Academic Publishers ,  National Museum of Natural History Naturalis, Leiden ,  Naturalis Biodiversity Center ,  University of Amsterdam

ISSN: 0375-7587 ( Print )  1876-2077 ( Online ) 
Publishers, Sponsors & Affiliations: Natuurhistorisch Museum Maastricht (NMM) ,  National Museum of Natural History Naturalis, Leiden

ISSN: 0024-0672 ( Print )  1876-2174 ( Online ) 
Publishers, Sponsors & Affiliations: Natuurhistorisch Museum Maastricht (NMM) ,  National Museum of Natural History Naturalis, Leiden