Metarhabditis Tahseen, Hussain, Tomar, Shah & Jairajpuri, 2004

Type species: Metarhabditis andrassyana Tahseen, Hussain, Tomar, Shah & Jairajpuri, 2004

Seven valid species were listed in catalogue 2011.

Here two new species are added.

• M. giennensis Abolafia & Peña-Santiago, 2019 (2019b) – Puente de la Sierra, Jaén province, Southern Spain; from decaying wood from dead Populus alba in a riverbank forest (Quiebrajano river).

• M. suklaae (Mondal & Manna, 2014) comb. n. (= Rhabditis suklai Mondal & Manna, 2014; emended because named after a woman, Sukla) – Alipore Zoological Garden Kolkata, India; from faeces of Sambar deer ( Cervus unicolor).

I accept the following synonymisations by Asif et al. (2013) and Bhat et al. (2020):

• M. amsactae (Ali, Pervez, Andrabi, Sharma & Verma, 2011) – already dealt with in catalogue 2011 (description published in January 2011). Oscheius amsactae in Ali et al. (2007, 2010) and Ahmad et al. (2009) is a nomen nudum.

syn. Oscheius ciceri Shaheen, Ali and Asif, 2011 (description published in June 2011) – village Akbarpur, Kanpur district, Uttar Pradesh, India; soil from the rhizosphere of chickpea ( Cicer arietinum), isolated by the insect baiting technique and maintained on larvae of the moth Corcyra cephalonica.

– Oscheius hussainii Shaheen, Ali & Asif, 2011 (description published in June 2011) – Indian institute of Pulses Research, Kanpur, Uttar Pradesh, India; soil from rhizosphere of pigeonpea ( Cajanus cajan), collected by the insect baiting technique and maintained on Corcyra cephalonica larvae.

– Oscheius gingeri Pervez, Eapen, Devasahayam & Jacob, 2013 – Experimental farm, Peruvannamuzhi, Calicut district, Kerala, India; soil from the rhizosphere of ginger ( Zingiber officinale), baited with Galleria mellonella .

– Metarhabditis longicaudata Tabassum, Salma & Nasir, 2019 – Malir cantonment, Karachi, Sindh, Pakistan; soil below Mango tree ( Mangifera indica), baited using last instars of Galleria mellonella .