Trigonostomidae (cont.)

Trigonostomum mirabile (Pereyaslawzewa, 1892)

Trigonostomum lilliei (Graff, 1911)

Trigonostomum penicillatum (Schmidt, 1857)

Trigonostomum piriforme Pereyaslawzewa, 1892

Trigonostomum prytherchi Kepner, Ferguson & Stirewalt, 1941

Trigonostomum venenosum (Uljanin, 1870)

Beklemischeviella contorta (Beklemischev, 1927)

Beklemischeviella angustior Luther, 1943

Ptychopera alaskana Ax & Armonies, 1990

Ptychopera japonica Ax, 2008

Ptychopera unicornis Van Steenkiste & Leander, 2018

Ptychopera westbladi (Luther, 1943) Den Hartog, 1964

Ptychopera avicularis Karling, 1974

Ptychopera ehlersi Ax, 1971

Ptychopera hartogi Ax, 1971

Ptychopera plebeia (Beklemischev, 1927)

Ptychopera purasjokii Ax, 1971

Ptychopera scutulifera Ehlers & Ax, 1974

Ptychopera spinifera den Hartog, 1966

Ptychopera subterranea Ax, 1971

Ptychopera tuberculata (Graff, 1882)

Ptychopera zostericola Ax, 1971

Ceratopera cascadiensis Van Steenkiste & Leander, 2017

Ceratopera complicata Van Steenkiste & Leander, 2017

Ceratopera canariensis (Ehlers & Ehlers, 1980)

Ceratopera aremorica (Ehlers & Sopott-Ehlers, 1989)

Ceratopera elegans (Luther, 1948)

Ceratopera falcata (Ax, 1953)

Ceratopera floralis (Ehlers, 1974)

Ceratopera geminata (den Hartog, 1966)

Ceratopera globulifera (Artois, Vermin & Schockaert, 2000)

Ceratopera helgolandica (Ax, 1971)

Ceratopera minuta (Artois, Vermin & Schockaert, 2000)

Ceratopera pacifica (Karling, 1986)

Ceratopera roscoffensis (Ehlers, 1980)

Ceratopera rugata (Ehlers, 1974)

Ceratopera spiralis (Artois, Vermin & Schockaert, 2000)

Ceratopera flabellifera (den Hartog, 1964)

Ceratopera gracilis (Graff, 1882)

Ceratopera axi (Riedl, 1954)

Ceratopera bermudensis Karling, 1986

Ceratopera ehlersi Karling, 1986

Ceratopera paradoxa (Pereyaslawzewa, 1892)

Ceratopera paragracilis Ehlers & Ax, 1974

Ceratopera pilifera Karling, 1986

Ceratopera reisingeri (Riedl, 1959)

Ceratopera sellai (Steinböck, 1933)

Ceratopera steinboecki (Riedl, 1959)

Lutheriella diplostyla den Hartog, 1966

Cryptostiopera cornuta Ax, 1974

Petaliella spiracauda Ehlers, 1974

Brederveldia bidentata Van der Velde & Van de Winkel, 1975

Proxenetes arctica Ax & Armonies, 1990

Proxenetes trispinosus Artois, Vermin & Schockaert, 2000

Proxenetes ampullatus Ax, 1971

Proxenetes bilioi den Hartog, 1966

Proxenetes britannicus den Hartog, 1966

Proxenetes cimbricus Ax, 1971

Proxenetes cisorius den Hartog, 1966

Proxenetes deltoides den Hartog, 1965

Proxenetes fasciger Ehlers, 1974

Proxenetes flabellifer Jensen, 1878

Proxenetes flexus Ax, 1971

Proxenetes inflatus den Hartog, 1966

Proxenetes intermedius den Hartog, 1966

Proxenetes karlingi Luther, 1943

Proxenetes minimus den Hartog, 1966

Proxenetes monotubulus den Hartog, 1966

Proxenetes multidentatus Ax, 1971

Proxenetes pratensis Ax, 1960

Proxenetes puccinellicola Ax, 1960

Proxenetes quadrispinosus den Hartog, 1966

Proxenetes quinquespinosus Ax, 1971

Proxenetes segmentatus den Hartog, 1966

Proxenetes simplex Luther, 1948

Proxenetes trigonus Ax, 1960

Proxenetes tenuispinosus Ehlers, 1974

Proxenetes uncinatus Graff, 1882

Proxenetes unidentatus den Hartog, 1965

Byrsophlebidae

Kaitalugia lydieae Willems, Artois, Backeljau, & Schockaert, 2005

Kaitalugia falcata Willems, Artois, Backeljau, & Schockaert, 2005

Byrsophlebs thalassicola Diez, Reygel, & Artois, 3023

Byrsophlebs graffi Jensen, 1878

Byrsophlebs caligulachaena (Ehlers & Ehlers, 1981)

Byrsophlebs delamarei (Ax, 1956)

Byrsophlebs dubia (Ax, 1956)

Byrsophlebs lutheri (Marcus, 1952)

Byrsophlebs simplex (Ax, 1959)

Byrsophlebs uncinata (Ax, 1959)

Maehrenthaliella intermedia (Graff, 1882)

Parabyrsophlebs coeca (Luther, 1948)

Styloplanella strongylostomoides Findenegg, 1924

Thalassoplanella collaris Luther, 1946

Maehrenthalia americana Ax & Armonies, 1990

Maehrenthalia agilis (Levinsen, 1879)

Typhloplanidae

Syringoplana kolasai Artois, Willems, De Roeck, Jocque, & Brendonck, 2005

Carcharodopharynx schlitzensis Houben, Schwank, & Artois, 2015

Carcharodopharynx arcanus (Reisinger, 1924)

Cephalopharynx cannoni Hochberg, 2004

Mesophaenocorinae

Mesophaenocora polyova Norena, Brusa, Ponce de Leon & Damborenea, 2005