| abstract | Four new species of Ornithonyssus are described: O. acrobates from Acrobates pygmaeus (Shaw) (Marsupialia: Burramyidae); O. taphozous from Taphozous georgianus Thomas (Chiroptera: Emballonuridae); O. stigmaticus from T. flaviventris Peters; and O. campester from T. georgianus (principal host). Ornithonyssus latro Domrow is newly recorded from Eptesicus douglasorum Kitchener (Chiroptera: Vespertilionidae); O. praedo Domrow from Rattus tunneyi (Thomas), Pseudomys nanus (Gould), Zyzomys argurus (Thomas) and Z. woodwardi (Thomas) (all Rodentia: Muridae), from Antechinus macdonnellensis (Spencer), Dasyurus hallucatus Gould, Phascogale tapoatafa (Meyer) and Sminthopsis crassicaudata (Gould) (all Marsupialia: Dasyuridae) and from Tarsipes spencerae Gray (Marsupialia: Tarsipedidae); and Pellonyssus reedi (Zumpt and Patterson) from Steganopleura bichenovii (Vigors and Horsfield) and Donacola castaneothorax (Gould) (both Passeriformes: Ploceidae) and Neophema bourkii (Gould) (Psittaciformes: Psittacidae, captive host). |