| Ablechroiulus cristatus | EU196013 | EU195976 |  | USA | Unknown | Kiontke et al. (2007) | 
| Ablechroiulus dudichi | AF083012 |  |  | USA | Unknown | Fitch (unpublished) | 
| Auanema rhodensis | EU196004 |  |  | USA | Unknown | Kiontke et al. (2007) | 
| Buetschlinema nidrosiensis | EU196020 |  |  | USA | Unknown | Kiontke et al. (2007) | 
| Bursilla belari | MK359049 |  |  | India | Soil | Palanisamy et al. (unpublished) | 
| Bursilla sp. |  | EF990722 |  | USA | Unknown | Kiontke et al. (2007) | 
| Caenorhabditis angaria | JN636068 |  |  | USA | Rotting fruits | Kiontke et al. (2011) | 
| Caenorhabditis elegans | Z92784 |  |  | UK | Unknown | Sulston and Waterston (1998) | 
| Caenorhabditis elegans |  | X03680 |  | USA | Unknown | Ellis et al. (1986) | 
| Caenorhabditis sinica |  | JN636142 |  | USA | Rotting fruits | Kiontke et al. (2011) | 
| Cephaloboides cf. armatus | EU196005 |  |  | USA | Unknown | Kiontke et al. (2007) | 
| Crustorhabditis transita |  | EU195995 |  | USA | Unknown | Kiontke et al. (2007) | 
| Cruznema tripartitum | U73449 |  |  |  | Unknown | Baldwin et al. (1997) | 
| Diploscapter coronatus | AY593921 |  |  | Netherlands | Soil | Helder et al. (2006) | 
| Diploscapter sp. |  | EU195959 |  | USA | Unknown | Kiontke et al. (2007) | 
| Distolabrellus veechi |  | EF990725 |  | USA | Unknown | Kiontke et al. (2007) | 
| Haematozoon subulatum | EU040125 |  |  | China | Soil | Li et al. (unpublished) | 
| Haematozoon subulatum | AF083017 |  |  | USA | Unknown | Fitch (unpublished) | 
| Haematozoon subulatum |  | EF990727 |  | USA | Unknown | Kiontke et al. (2007) | 
| Heterorhabditis bacteriophora | KJ636408 |  |  | Netherlands | Unknown | van Megen (unpublished) | 
| Heterorhabditis downesi |  |  | KU573061 | Ireland | Soil | Maher et al. (2016) | 
| Heterorhabditis megidis | KJ636320 |  |  | Netherlands | Unknown | van Megen (unpublished) | 
| Litoditis marina | AF083021 |  |  | USA | Unknown | Fitch (unpublished) | 
| Litoditis marina |  | AM399053 |  | Belgium | Fucus sp. | Derycke et al. (2008a) | 
| Litoditis marina |  |  | AM937053 | Greece | Decaying seaweeds | Derycke et al. (2008b) | 
| Litoditis mediterranea | AF083020 |  |  | USA | Unknown | Fitch (unpublished) | 
| Litoditis mediterranea |  | AM399068 |  | New Zealand | Unknown | Derycke et al. (2008a) | 
| Mesorhabditis anisomorpha | AF083013 |  |  | USA | Unknown | Fitch (unpublished) | 
| Mesorhabditis anisomorpha |  | EF990723 |  | USA | Unknown | Kiontke et al. (2007) | 
| Mesorhabditis longespiculosa | EU196014 | EU195980 |  | USA | Unknown | Kiontke et al. (2007) | 
| Metarhabditis amsactae | MT872503, MT872504 | MT872508, MT872509 | MT873043, MT873044 | India | Soil | Present study | 
| Metarhabditis amsactae |  |  | MT422254 | Philippines | Soil | Dichusa et al. (unpublished) | 
| Metarhabditis amsactae |  |  | MT452472, MT452471 | Philippines | Soil | Sangcopan and Sumaya (unpublished) | 
| Metarhabditis amsactae |  |  | MH392568, KY083045 KP834433, KP834432 | India | Soil | Chavan et al. (unpublished) | 
| Metarhabditis amsactae |  |  | MK973071 | Pakistan | Soil | Tabassum et al. (unpublished) | 
| Metarhabditis blumi | U13935 |  |  | Germany | Unknown | Fitch et al. (1995) | 
| Metarhabditis blumi | MT043860 |  |  | Philippines | Soil | Andalan et al. (unpublished) | 
| Metarhabditis blumi | MF989442 |  |  | Colombia | Bos indicus | Chaves et al. (unpublished) | 
| Metarhabditis blumi | MT012150 |  |  | Philippines | Soil compost | Guadalquiver (unpublished) | 
| Metarhabditis blumi | MN453373 |  |  | India | Soil | Kandhasamy and Muthugounder (unpublished) | 
| Metarhabditis blumi |  | EU195965 |  | USA | Unknown | Kiontke et al. (2007) | 
| Metarhabditis blumi |  | KM233152, KM233153 |  | Brazil | Cow | Bossi et al. (2015) | 
| Metarhabditis blumi |  |  | DQ121436 | South Africa | Unknown | Jumba and Gray (unpublished) | 
| Metarhabditis rainai | MT012135, MT012133 |  |  | Philippines | Soil | Kabalu et al. (unpublished) | 
| Metarhabditis rainai | MT012153 |  |  | Philippines | Soil | Buldiman et al. (unpublished) | 
| Metarhabditis rainai | JQ237848 |  |  | USA | Citrus groves | Campos-Herrera et al. (2012) | 
| Metarhabditis rainai | AF083008 |  |  | USA | Unknown | Fitch (unpublished) | 
| Metarhabditis rainai |  | EU195966 |  | USA | Unknown | Kiontke et al. (2007) | 
| Metarhabditis rainai |  | KR011843, KR011846 |  | Brazil | Soil | de Brida et al. (2017) | 
| Metarhabditis sp. |  |  | MK973071 | Pakistan | Soil | Tabassum et al. (unplublished) | 
| Myolaimus byersi | KU180665 | KU180676 |  | Sweden | Unknown | Holovachov et al. (2015) | 
| Oscheius carolinensis | FJ547240 | FJ547239 |  | USA | Vermicompost | Ye et al. (2010) | 
| Oscheius chongmingensis | EF503692 |  |  | China | Soil | Zhang et al. (2008) | 
| Oscheius chongmingensis |  | EU273599 |  | China | Soil | Liu et al. (2012) | 
| Oscheius chongmingensis |  |  | MT548593 | China | Spodoptera frugiperda | Li et al. (unpublished) | 
| Oscheius colombianus | AY751546 |  |  | Colombia | Cyrtomenus bergi | Stock et al. (2005) | 
| Oscheius dolichura | EU196010 |  |  | USA | Unknown | Kiontke et al. (2007) | 
| Oscheius dolichuroides | AF082998 |  |  | USA | Unknown | Fitch (unpublished) | 
| Oscheius dolichuroides |  | EU195970 |  | USA | Unknown | Kiontke et al. (2007) | 
| Oscheius guentheri | EU196022 |  |  | USA | Unknown | Kiontke et al. (2007) | 
| Oscheius indicus |  | MF441252 |  | India | Soil | Kumar et al. (2019) | 
| Oscheius insectivorus | AF083019 |  |  | USA | Unknown | Fitch (unpublished) | 
| Oscheius insectivorus |  | EU195968 |  | USA | Unknown | Kiontke et al. (2007) | 
| Oscheius myriophilus |  | AY602176 |  | USA | Unknown | Kiontke et al. (2004) | 
| Oscheius myriophilus |  |  | MG742117 | Thailand | Soil | Nitjarunkul et al. (unpublished) | 
| Oscheius myriophilus | U13936 |  |  | USA | Soil | Fitch et al. (1995) | 
| Oscheius necromenus |  | KT884894 |  | Australia | Oncocladosoma castaneum | Carta et al. (2018) | 
| Oscheius onirici | MG551687 |  |  | Portugal | Unknown | Campos-Herrera (unpublished) | 
| Oscheius onirici |  | LN613263 |  | Italy | Soil | Torrini et al. (2015) | 
| Oscheius rugaoensis | JQ002566 |  |  | China | Soil | Zhang et al. (2012) | 
| Oscheius rugaoensis |  | KT884891 |  | Japan | Chamberlinius hualienensis | Carta et al. (2018) | 
| Oscheius saproxylicus | MK959600 | MK959601 |  | Spain | Decaying wood | Abolafia and Pena-Santiago (2019b) | 
| Oscheius tipulae |  | EU195969 |  | USA | Unknown | Kiontke et al. (2007) | 
| Oscheius tipulae |  |  | KP792649 | Brazil | Soil | Campos-Herrera and Pu˚ža (unpublished) | 
| Parasitorhabditis obtusa |  | EF990724 |  | Germany | Bark beetles | Kiontke et al. (2007) | 
| Parasitorhabditis obtuse | EU003189 |  |  | USA | Unknown | Kiontke et al. (2007) | 
| Pellioditis typica |  |  | AF036946 | Kenya | Feces of an antelope | Adams et al. (1998) | 
| Pelodera pseudoteres | EU196023 | EU195997 |  | USA | Unknown | Kiontke et al. (2007) | 
| Pelodera teres | AF083002 |  |  | USA | Unknown | Fitch (unpublished) | 
| Pelodera teres |  | EU195979 |  | USA | Unknown | Kiontke et al. (2007) | 
| Phasmarhabditis hermaphrodita | DQ639980 |  |  | Scotland | Nemaslug | MacMillan et al. (2006) | 
| Phasmarhabditis neopapillosa | DQ639982 |  |  | Scotland | Arion ater | MacMillan et al. (2006) | 
| Phasmarhabditis papillosa |  |  | KX267675 | South Africa | Deroceras reticulatum | Pieterse et al. (2017) | 
| Poikilolaimus floridensis | AB370214 |  |  | USA | Termites | Kanzaki et al. (2009) | 
| Poikilolaimus oxycercus | AF083023 |  |  | USA | Unknown | Fitch (unpublished) | 
| Poikilolaimus oxycercus |  | EU195984 |  | USA | Unknown | Kiontke et al. (2007) | 
| Poikilolaimus piniperdae |  | DQ059060 |  | Germany | Unknown | Hong et al. (2005) | 
| Poikilolaimus regenfussi | AF083022 |  |  | USA | Unknown | Fitch (unpublished) | 
| Poikilolaimus regenfussi |  | DQ059057 |  | Germany | Unknown | Hong et al. (2005) | 
| Protorhabditis sp. | AF083001 |  |  | USA | Unknown | Fitch (unpublished) | 
| Protorhabditis sp. |  | AY602168 |  | USA | Unknown | Kiontke et al. (2007) | 
| Rhabditella axei | U13934 |  |  | Germany | Unknown | Fitch et al. (1995) | 
| Rhabditella axei |  | AY602177 |  | USA | Unknown | Kiontke et al. (2004) | 
| Rhabditis brassicae | EU196006 |  |  | USA | Unknown | Kiontke et al. (2007) | 
| Rhabditis sp. | MN082353, MN082355 |  |  | Taiwan | Soil | Yang et al. (2020) | 
| Rhabditoides inermis | AF082996 |  |  |  | Unknown | Fitch (unpublished) | 
| Rhabditoides regina |  | EF990726 |  | USA | Unknown | Kiontke et al. (2007) | 
| Rhomborhabditis regina | KX385908 |  |  | Mexico | White grub | Jiménez-Cortés et al. (2016) | 
| Teratorhabditis mariannae | EF990716 | EF990721 |  | USA | Soil compost | Kanzaki et al. (2008) | 
| Teratorhabditis palmarum | U13937 |  |  | USA | Unknown | Fitch et al. (1995) |