Gundlachtudora Torre & Bartsch, 1941

Watters, G. Thomas, 2013, New taxa and distributional notes on Abbottella and related taxa (Gastropoda: Littorinoidea: Annulariidae), Zootaxa 3646 (1), pp. 1-22 : 8

Subgenus Gundlachtudora Torre & Bartsch, 1941

Type species by original designation Cyclostoma decoloratum Pfeiffer, 1859 .

Diagnosis. Like Abbottella s.s. but operculum with reflected lamellae. Operculum may not fit into aperture.

Remarks. Torre & Bartsch (1941) had created Gundlachtudora for a Cuban Abbottella -like species having an operculum with a reflected lamella forming a continuous surface. Bartsch (1946) then created Petasipoma for a Haitian species with the same characteristics. Watters (2006) synonymized the two genera and relegated Gundlachtudora to a subgenus of Abbottella . The species described here also has this characteristic operculum. However, it may be that these opercular features have evolved independently and the taxa are not actually closely related. Additional phylogenetic work is required to answer this question. For this reason this new species is placed in Gundlachtudora with reservations.