Pupisoma costulata, Hausdorf, 2007

Hausdorf, Bernhard, 2007, Revision of the American Pupisoma species (Gastropoda: Pupilloidea), Journal of Natural History 41 (21 - 24), pp. 1481-1511 : 1494-1497

Pupisoma ( Pupisoma ?) costulata sp. n.

( Figures 8, 13 )

Type material examined

Holotype: Colombia, Cundinamarca: La Calera 0.5 km towards Bogota´, farm Las Cabreras , Vereda San Rafael , Andean forest , 2830–2840 m alt., 04 ° 429300N, 73 ° 589200W ( ZMH 37621, leg. B. Hausdorf, 11 March 2000, measurements: D 51.6 mm, D2W51.0 mm, H 52.2 mm, da 50.75 mm, dh 50.75 mm) . Paratypes: Colombia, Distrito Capital: Bogota´, forest near brook above Escuela Militar de Caballeria , 2750 m alt., 04 ° 419150N, 74 ° 019330W ( ZMH 4319 ) . Cundinamarca: La Calera 0.5 km towards Bogota´, farm Las Cabreras, Vereda San Rafael, Andean forest, 2830–2840 m alt., 04 ° 429300N, 73 ° 589200W ( ANSP; FLMNH; FMNH; NNM; SMF; UNAL; ZMH 4031 , 4063 ); Bosques de Torca, Andean forest , W slope, 2800 m alt., 04 ° 499180N, 74 ° 019070W ( ZMH 4331 ) . Boyaca´: Villa de Leiva, oak forest near Manantiales de Iguaque , W slope, 2600 m alt., 05 ° 419150N, 73 ° 289530W ( ZMH 4198 ) .

Shell ( Figure 8)

Conical; apex obtuse; teleoconch with coarse growth-wrinkles, without incised spiral striae; corneous; shining; subtranslucent; 4.25–5 moderately inflated whorls separated by a deep suture; body whorl slightly descending towards the aperture, basally flattened; aperture truncate-rounded, edentate; peristome neither expanded nor reflexed nor thickened; columellar margin slightly dilated, partly covering the narrow umbilicus. Shell measurements and ratios are listed in Tables I and II.

Diagnosis

Pupisoma costulata differs from all other Pupisoma species in the conical shell with more whorls, a flattened base, and coarse growth-wrinkles. In shell shape and size it is most similar to P. mediamericanum .

Remarks

Pupisoma costulata occurs sympatrically with P. comicolense . The range of P. costulata overlaps that of P. mediamericanum , the conchologically most similar species.

Etymology

The species is named after its finely ribbed (Latin costulatus, used as an adjective) shell. Type locality

Colombia, Cundinamarca: La Calera 0.5 km towards Bogota´, farm Las Cabreras, Vereda San Rafael, Andean forest , N slope, 2840 m alt., 04 ° 429300N, 73 ° 589200W .

Distribution ( Figure 13 )

Pupisoma costulata is known from Andean forests at 2600–2840 m altitude in the Departamentos Cundinamarca and Boyacá and the Distrito Capital in Colombia .

Figures

Figure 13. Distribution of Pupisoma (Pupisoma?) costulata sp. n. (2°-grid).