Description of Paradorylaimus dorsocaudali,new species (Nematoda: Dorylaimida) with notes on Plectus (Ceratoplectus armatus) from Pakistan

A new species of the genus paradorylaimus andrassy 1969 is described and illustrated from pakistan. paradorylaimus dorsocaudali new species differ from all known species of the genus in having smaller body length,tail length and odontostyle length. the new species is characterized by 1.3-1.6 mm long female body,lip region truncate,offset by weak depression,odontostyle 21.4-23.2 μm long is and 2.8-3 μm wide,twice as long as the lip region width; vulva longitudinal; female tail 5.9-6.6 anal body diameter long,dorsally curved; prerectum 1.7-2.6 anal body diameter long.plectus (ceratoplectus) armatus (butschli,1873) andrassy,1984 is recorded for the first time in pakistan and is briefly described and illustrated. copyright 2017 zoological society of pakistan.