Clyporhynchus monolentis Karling, 1947 (additional source)
Gnathorhynchus krogeni Karling, 1947 (status source)
Promesostoma bilineatum Pereyaslawzewa, 1892 (additional source)
Provortex psammophilus Ax, 1951 (additional source)
Ptychopera avicularis Karling, 1974 (original description)

Danish Exclusive Economic Zone for Thylacorhynchus arcassonensis de Beauchamp, 1927 
Finnish Exclusive Economic Zone for Cicerina brevicirrus Meixner, 1928 
Finnish Exclusive Economic Zone for Gnathorhynchus conocaudatus Meixner, 1929 
Finnish Exclusive Economic Zone for Paramonotus hamatus (Jensen, 1878) Meixner, 1938 
Finnish Exclusive Economic Zone for Paramonotus hamatus (Jensen, 1878) Meixner, 1938 
Finnish Exclusive Economic Zone for Philosyrtis fennica Ax, 1954 
Finnish Exclusive Economic Zone for Proxenetes simplex Luther, 1948 
Finnish Exclusive Economic Zone for Ptychopera avicularis Karling, 1974 
Finnish Exclusive Economic Zone for Ptychopera avicularis Karling, 1974 
Massachusetts for Bothriomolus balticus Meixner, 1938 
Norwegian Exclusive Economic Zone for Balgetia semicirculifera Karling, 1962 
Norwegian Exclusive Economic Zone for Macrostomum tenuicauda Luther, 1947 
Russia for Thylacorhynchus filostylis Karling, 1956 
Sweden for Castrada (Castrada) subsalsa Luther, 1946 
Sweden for Gnathorhynchus conocaudatus Meixner, 1929 
Sweden for Haplovejdovskya subterranea Ax, 1954 
Sweden for Prognathorhynchus campylostylus Karling, 1947 
Sweden for Psammomacrostomum turbanelloides Karling, 1974 
Sweden for Psammomacrostomum turbanelloides Karling, 1974 
Sweden for Ptychopera westbladi (Luther, 1943) Den Hartog, 1964 
Sweden for Thylacorhynchus arcassonensis de Beauchamp, 1927 
Sweden for Thylacorhynchus filostylis Karling, 1956 
Sweden for Thylacorhynchus pyriferus Karling, 1950