A proposal to synonymize Loffienema with Haematozoon, Quercorhabditis with Diploscapteroides, and Stegorhabditis with Stomachorhabditis (Nematoda Rhabditida, Rhabditomorpha), including keys to species identification Author Abolafia, Joaquín text Zootaxa 2023 2023-03-28 5258 2 231 238 http://dx.doi.org/10.11646/zootaxa.5258.2.5 journal article 10.11646/zootaxa.5258.2.5 1175-5326 7777125 E14F9B48-3A35-43B7-86B3-424896320230 Updated list of species of the genus Diploscapteroides Rahm, 1928 = Rhabditis ( Diploscapteroides Rahm, 1928 ) Sudhaus, 1976 = Cheilorhabditis Timm, 1959 = Colporhabditis Andrássy, 1976 = Quercorhabditis Shah, Hussain & Vaid, 2013 n. syn. Diploscapteroides boettgeri ( Meyl, 1953 ) Sudhaus, 2011 = Rhabditis boettgeri Meyl, 1953 = Rhabditis ( Teratorhabditis ) boettgeri Meyl, 1953 (Meyl, 1954) = Teratorhabditis boettgeri ( Meyl, 1953 ) Dougherty, 1955 = Cephaloboides boettgeri ( Meyl, 1953 ) Andrássy, 1983 Diploscapteroides brevicauda Rahm, 1928 ( type species) = Rhabditis ( Diploscapteroides ) brevicauda ( Rahm, 1928 ) Sudhaus, 1976 Diploscapteroides chitinolabiatus ( Schneider, 1937 ) Sudhaus, 1976 , opus Andrássy (1983) = Rhabditis chitinolabiata Schneider, 1937 = Rhabditis ( Teratorhabditis ) chitinolabiata Schneider, 1937 ( Osche, 1952 ) = Rhabditis ( Diploscapteroides ) chitinolabiata Schneider, 1937 ( Sudhaus, 1976 ) = Teratorhabditis chitinolabiata ( Schneider, 1937 ) Dougherty, 1955 Diploscapteroides coroniger ( Altherr, 1938 ) Sudhaus, 1976 = Rhabditis coronigera Altherr, 1938 = Rhabditis ( Teratorhabditis ) coronigera Altherr, 1938 ( Osche, 1952 ) = Rhabditis ( Diploscapteroides ) coronigera Altherr, 1938 ( Sudhaus, 1976 ) = Teratorhabditis coronigera ( Altherr, 1938 ) Dougherty, 1955 Diploscapteroides dacchensis ( Timm, 1959 ) Sudhaus, 1976 , opus Andrássy (1983) = Cheilorhabditis dacchensis Timm, 1959 = Rhabditis ( Diploscapteroides ) dacchensis ( Timm, 1959 ) Sudhaus, 1976 Diploscapteroides flexuosus Andrássy, 2001 Diploscapteroides persicus Ghaemi, Pourjam, Álvarez-Ortega, Pedram & Atighi, 2015 Diploscapteroides rajouriensis ( Shah, Allie, Vaid & Handoo, 2018 ) n. comb. = Quercorhabditis rajouriensis Shah, Allie, Vaid & Handoo, 2018 Key to species identification ( Table 2 ) 1a – Females with larger body, more than 1.6 mm ........................................ Diploscapteroides brevicauda 1b – Females with smaller body, less than 1.3 mm ................................................................ 2a – Female tail cupola-shaped......................................................... Diploscapteroides boettgeri 2b – Female tail conoid to filiform........................................................................... 3 3a – Female tail longer, filiform (c' about 8-10)................................................................. 4 3b – Female tail shorter, conoid (c' about 3.5-7.5)............................................................... 5 4a – Lip region wider than high....................................................... Diploscapteroides dacchensis 4b – Lip region almost as wide than high................................................. Diploscapteroides flexuosus 5a – Lip region separated by constriction, narrower than the adjacent part of body..................................... 6 5b – Lip region separated by depression, wider than the adjacent part of body......................................... 7 6a – Body smaller, less than 700 µm; male with filiform part of tail very thin..................... Diploscapteroides persicus 6b – Body larger, more than 700 µm; male with filiform part of tail robust ................... Diploscapteroides chitinolabiatus 7a – Female rectum shorter than anal body diam.; male with filiform part of tail very thin and shorter than the conoid part.................................................................................... Diploscapteroides coroniger 7b – Female rectum about twice anal body diam.; male with filiform part of tail robust and longer than the conoid part.................................................................................... Diploscapteroides rajouriensis