Umagillidae Wahl, 1910
Syndesmis aethopharynx Westervelt & Kozloff, 1990
Syndesmis albida Kozloff & Westervelt, 1990
Syndesmis alcalai Komschlies & Vande-Vusse, 1980
Syndesmis atriovillosa (Westblad, 1953)
Syndesmis cannoni Jondelius, 1996
Syndesmis clypeasteris Graff, 1882
Syndesmis collongistyla (Hertel, Duszynski & Ubelaker, 1990)
Syndesmis compacta Komschlies & Vande-Vusse, 1980
Syndesmis dendrastorum Stunkard & Corliss, 1951
Syndesmis dendrastroroum
Syndesmis echiniacuti Kozloff, 1997
Syndesmis echinorum Francois, 1886
Syndesmis evelinae Marcus, 1968
Syndesmis franciscana
Syndesmis glandulosa Hyman, 1960
Syndesmis inconspicua Westervelt & Kozloff, 1992
Syndesmis longicanalis Moens, Martens & Schockaert, 1994
Syndesmis mammilata Komschlies & Vande-Vusse, 1980
Syndesmis neglecta Westervelt & Kozloff, 1992
Syndesmis obhoriensis Beltagi & Mandura, 1991
Syndesmis philippinensis Komschlies & Vande-Vusse, 1980
Syndesmis rubida Kozloff & Westervelt, 1990
