Ampullaria cousini, Jousseaume, 1887

Cowie, Robert H. & Héros, Virginie, 2012, Annotated catalogue of the types of Ampullariidae (Mollusca, Gastropoda) in the Muséum national d’Histoire naturelle, Paris, with lectotype designations, Zoosystema 34 (4), pp. 793-824 : 801

cousini Jousseaume, 1887 , Ampullaria

( Fig. 2E )

Ampullaria cousini Jousseaume, 1887: 185 , pl. 3, fig. 3.

CURRENT TAXONOMIC STATUS. — Pomacea (Pomacea) . Valid species.

TYPE SPECIMEN. — Lectotype (here designated) MNHN 4483 .

TYPE LOCALITY. — “la République de l’Équateur” [ Equador].

REMARKS

Cowie & Thiengo (2003: 61) cited the date of publication in error as 1877, and indicated two lots totaling three specimens, considering them all to be syntypes, as they were so indicated on their labels. However, Jousseaume indicated that only two specimens were known (“Les deux seuls exemplaires que nous connaissons de cette espèce”) and the original description gives a range of measurements (e.g., height “ 44 à 51 mm ”). MNHN 4483 is labeled as “type figuré”. This shell corresponds very well to Jousseaume’s original illustration, and its measurements correspond to the smaller measurements given by him. We therefore here designate it as the lectotype to stabilise the name.Contrary to Cowie & Thiengo (2003), the two shells in MNHN 4482 cannot be considered type material because neither is large enough to be Jousseaume’s second specimen.

Figures

FIG. 2. — A, Ampullaria castelnaudi Hupé, 1857, lectotype MNHN 23076, 103.9 mm; B, Ampullaria celebensis Quoy & Gaimard, 1834, lectotype MNHN 23077, 70.5 mm; C, Ampullaria chariensis Germain, 1905, lectotype MNHN 4478, 38.7 mm; D, Ampullaria columbiensis Reeve,1856,syntype MNHN 4480, 36.8 mm;E, Ampullaria cousini Jousseaume,1887,lectotype MNHN 4483, 43.0 mm; F, Ampullaria decocta Mabille, 1887, lectotype MNHN 23078, 29.7 mm; G, Ampullaria decussata Moricand, 1836, possible syntype MNHN 23079, 28.0 mm.