SubFamily: RHYTIDOPOMINAE - Genus: Opisthosiphon W.H. Dall, 1905 (syn: Leptopisthosiphon, Opisthosiphona, Mirisiphon - DB: 56 SP, 11 IMG)
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SubFamily: RHYTIDOPOMINAE - Subgenus: Opisthosiphon (Bermudezsiphona) C. de la Torre & P. Bartsch, 1941 (DB: 4 SP, 1 IMG)
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SubFamily: RHYTIDOPOMINAE - Genus: Rhytidopoma E.R. Sykes, 1901 (syn: Colonina, Crossepoma, Ctenopoma, Orcuttipoma, Torrella, Torrellisca - DB: 16 SP, 5 IMG)
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SubFamily: RHYTIDOPOMINAE - Subgenus: Rhytidopoma (Torrella) J. Henderson & P. Bartsch, 1920 (DB: 5 SP, 1 IMG)
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