Abbottella (Abbottella) crossei (Pilsbry, 1933)

Watters, G. Thomas, 2013, New taxa and distributional notes on Abbottella and related taxa (Gastropoda: Littorinoidea: Annulariidae), Zootaxa 3646 (1), pp. 1-22 : 14

Abbottella (Abbottella) crossei (Pilsbry, 1933)

Figures 3 S–W, 7 G

Type material. ANSP 7951, holotype. ANSP 373769, paratype.

Type locality. Santo Domingo. Bartsch (1946: 133) believed Pilsbry’s specimen came from “somewhere on the Samaná Peninsula,” which is shown here to be correct.

Other material examined. UF 216146, 4 km E of Samaná, Samaná Province, Dominican Republic; UF 216134, 8 km S of Las Galeras, Samaná Province, Dominican Republic; UF 216139, 2.9 km S of Las Galeras, Samaná Province, Dominican Republic; UF 216128, 6.5 km S of Las Galeras, Samaná Province, Dominican Republic; GTW 9432a, limestone area, at side of road to Cape Samaná, 0.6 km before Cape, Samaná Province, Dominican Republic.

Distribution and habitat. This species is found along the coastal limestone bluff on the eastern tip of the Samaná Peninsula in the Sierra de Samaná of the Cordillera Septentrional, possibly to Sánchez. Bartsch (1946) added localities at 0.8 km from the sea, 2.4 km E of Puerto Francés, Samaná Province and at a cave 3.2 km NW of Sánchez, Samaná Province. I have not seen the Sánchez specimens, which seem to be out of the range of this species. Specimens have been found at the base of limestone outcrops and cliffs.

Comparison with other species. Abbottella crossei belongs to the group of small, heavily sculptured taxa on the Samaná Peninsula. It differs in having finer sculpture and less developed keels. It never has the fimbriated lip usually found in A. rosaliae ( Figure 4 A–E ) and A. abbotti ( Figure 3 A–E ).

Figures

FIGURE 3. A – E. Abbottella (Abbottella) abbotti Bartsch, 1946. A – C. UF 215980, 5.6 mm width. D. UF 215983, 6.0 mm width. E. UF 215981, 5.2 mm width. F. Choanopoma adolfi Pfeiffer, 1852. Pfeiffer, 1854: pl. 48, fig. 8. G – I. Abbottella (Abbottella) cf. adolfi adolfi (Pfeiffer, 1852). GTW 7020 c, 5 mm width. J – L. Abbottella (Abbottella) adolfi peninsularis Bartsch, 1946. GTW 9430 a, 7.8 mm width. M. Abbottella (Abbottella) newcombi (Crosse, 1873). Syntype (MNHN 5436), 5.7 mm length. Photo courtesy of MNHN. N – R. Abbottella (Abbottella) aenea Watters, 2010. N – P. GTW 14181 a, 6.5 mm width. Q. GTW 14181 a, 6.1 mm width. R. Paratype (OSUM 35490), 6.0 mm width. S – W. Abbottella (Abbottella) crossei (Pilsbry, 1933). S – U. GTW 9432 a, 7.3 mm width. V. UF 216146, 7.6 mm width. W. UF 216146, 7.2 mm width. X – BB. Abbottella (Abbottella) milleacantha Watters & Duffy, 2010. X – Z. Holotype (UF 420728), 7.5 mm width. AA. Grego, 7.4 mm width. BB. Grego, 8.1 mm width.

FIGURE 4. A – E. Abbottella (Abbottella) rosaliae (Pfeiffer, 1858). A – C. UF 216191, 9.2 mm width. D. UF 216135, 9.9 mm width. E. UF 216125, 9.3 mm width. F – I. Abbottella (Abbottella) samanensis Bartsch, 1946. F – H. GTW 7085 c, 8.7 mm width. I. GTW 7085 d, 8.0 mm width. J – N. Abbottella (Abbottella) sanchezi Bartsch, 1946. J – L. UF 216154, 9.1 mm width. M. UF 216154, 8.1 mm width. N. UF 216154, 7.6 mm width. O – S. Abbottella (Abbottella) sosuaensis Bartsch, 1946. O – Q. UF 218136, 6.9 mm width. R. UF 218136, 7.7 mm width. S. GTW 9431 a, 7.6 mm width. T – X. Abbottella (Abbottella) wilhelmi (Pfeiffer, 1858). T – V. UF 216150, 8.5 mm width. W. UF 216150, 8 mm width. X. UF 216150, 7.6 mm width. Y – CC. Lagopoma lagopoma Bartsch, 1946. Y – AA. GTW 10081 a, 9.7 mm width. BB. GTW 10081 a, 7.6 mm width. CC. UF 216120, 7.7 mm width.