Paramonohystera Steiner, 1916

Leduc, Daniel, 2025, New nematode species (Nematoda: Chromadorea) and records from the New Zealand continental shelf, European Journal of Taxonomy 981, pp. 213-238 : 222-223

Genus Paramonohystera Steiner, 1916

Monhystera (Paramonohystera) megacephala – Steiner 1916: 639 –641, fig37

Paramonohystera megacephala – Filipjev 1918: 279

Type species

Paramonohystera megacephala (Steiner, 1916) .

Diagnosis (modified from Fonseca & Bezerra 2014 and Yu & Xu 2015)

Conspicuous lip region bearing six inner labial papillae. Six outer labial setae and four cephalic setae situated in single circle at base of lip region; two additional lateral setae sometimes present. Medium to large buccal cavity funnel-shaped. Amphidial fovea circular or elliptical. Spicules elongate (> 2 cloacal body diameter long), gubernaculum usually tubular and without apophyses.

Remarks

Gerlach & Riemann (1973) noted that Paramonhystera as used by Filipjev (1918: 279) and several subsequent workers is an invalid emendation. The genus was most recently revised by Yu & Xu (2015) and a list of valid species was most recently provided by Zhai et al. (2022). An additional species was subsequently described by Leduc & Zhao (2023).

List of valid species

P. biforma Wieser, 1956

P. brevicaudata Gagarin & Nguyen Thi Thu, 2008

P. buetschlii (Bresslau & Schuurmans Stekhoven in Schuurmans Stekhoven, 1935) = Daptonema buetschlii Schuurmans Stekhoven, 1935 = Paramonhystera buetschlii Bresslau & Schuurmans Stekhoven in Schuurmans Stekhoven, 1935 = Thalassomonhystera buetschlii Breslau & Schuurmans Stekhoven, 1940 = Theristus buetschlii Bresslau & Schuurmans Stekhoven in Schuurmans Stekhoven, 1935

P. concinna Lorenzen, 1977

P. eurycephalus Huang & Wu, 2011

P. gracilis Zhai, Geng & Sun, 2022

P. geraerti Chen & Vincx, 2000

P. halerba Fadeeva & Belogurov, 1987

P. leptamphida Leduc & Zhao, 2023

P. levicula (Lorenzen, 1973) Lorenzen 1977 = Theristus (Daptonema) leviculus Lorenzen in Gerlach & Riemann, 1973 = Theristus (Daptonema) levis Lorenzen, 1972 = Daptonema leviculus Lorenzen, 1972 = Paramonhystera levicula Lorenzen, 1972 = Paramonhystera levis Lorenzen, 1972

P. megacephala Steiner, 1916

P. parabutschlii (Timm, 1961) Lorenzen 1977 = Thalassomonhystera parabuetschlii Timm, 1961 = Theristus (Daptonema) parabutschlii Timm, 1961 = Daptonema parabutschlii Timm, 1961

P. pilosa Boucher, 1971

P. proteus Wieser, 1956

P. riemanni (Platt, 1973) Lorenzen 1977 = Paramonhystera riemanni Platt, 1973 = Theristus (Daptonema) riemanni Platt, 1973 = Daptonema riemanni Platt, 1973

P. sinica Yu & Xu, 2015

P. weihaiensis Huang & Sun, 2019

P. zizichi Pastor de Ward, 1985