Ondina stocki (De Jong & Coomans, 1988) De Jong & Coomans, 1988

Pimenta, Alexandre D., Santos, Franklin N. & Cunha, Carlo M., 2018, Redescription and reassignment of Ondinasemicingulata to the Pyramidellidae, with review of the occurrence of genus Evalea in the Western Atlantic (Gastropoda), Zoosystematics and Evolution 94 (2), pp. 535-544 : 535

Ondina stocki (De Jong & Coomans, 1988) comb. n. Figure 3 c–e

Evalea stocki : De Jong and Coomans 1988: 124, pl. 6, fig. 655.

? Amoura hendersoni auct. non Bartsch 1909: Gundersen (1998: 13, figured).

? Amoura cf. hendersoni auct. non Bartsch 1909: Odé (1994: 39, fig. 4).

Type material.

Holotype: ZMA.MOLL. 138319 [original publication indicates ZMA 3.87.105]; two paratypes: ZMA.MOLL. 138320.

Type locality.

Curaçao /Aruba [according to Jong and Coomans (1988: 124), the holotype was selected from mixed material from those two localities].

Material examined.

Photographs of the types.

Geographic distribution.

Curaçao /Aruba (type locality).

Remarks.

Ondina stocki (Figure 3 c–e) was originally described in Evalea , based on a sample of shells from Aruba/ Curaçao; the original illustration is a simple drawning that precludes a precise generic allocation, but the photographs of the holotype (Figure 3c) and of a young and an adult paratypes (Figure 3 d–e) clearly shows that this species belong in the genus Ondina . The shell shape is similar to Ondina hendersoni , but the shell is narrower, and the spiral grooves are less numerous.

Lee (2009) recorded Evalea stocki from Jacksonville Beach, Florida, (USA) based on a young specimen. The author, in the same work, referred to a color illustration of that species, published by Gundersen (1998), but named by Gundersen (1998) as Amoura hendersoni . The figured shells from Sanibel Island in Gundersen (1998) and that from Jacksonville in Lee (2009) clearly can be ascribed to the genus Ondina , but the images provided by the authors as well as the drawing of Amoura cf. hendersoni by Odé (1994), do not allow a precise separation between O. stocki or O. hendersoni . Also, the simple drawing of Amoura cf. hendersoni from Texas in Odé (1994) does not allow a conclusive identification, in spite of the pattern of spiral grooves resembling that found in O. stocki .

Therefore, we consider that the only confirmed occurrence of O. stocki is that restricted to the type locality area.