Plekocheilus (Eurytus) tricolor (Pfeiffer, 1853)

Breure, Abraham S. H. & Avila, Valentin Mogollon, 2016, Synopsis of Central Andean Orthalicoid land snails (Gastropoda, Stylommatophora), excluding Bulimulidae, ZooKeys 588, pp. 1-199 : 18-19

Taxon classification Animalia Stylommatophora Amphibulimidae

Plekocheilus (Eurytus) tricolor (Pfeiffer, 1853) Figs 2 K–M, 13 C–D, 16

Bulimus tricolor Pfeiffer 1853: 325; Pfeiffer 1853 in Küster and Pfeiffer 1840-1865: 95, pl. 32 figs 17-18.

Bulimus semipictus Hidalgo 1869: 188.

Plekocheilus tricolor ; Richardson 1995: 323 (references, synonymy).

Plekocheilus (Eurytus) tricolor ; Breure and Borrero 2008: 7; Borrero and Breure 2011: 43, figs 17 A–B.

Type locality.

"Gualea, Neu Granada".

Type material.

Not located.

Additional material.

MHNH 28113, lectotype (Breure 1975: 1139); MNCN 15.05/3161 (2) and 15.05/6943 (6), paralectotypes of Bulimus semipictus Hidalgo.

Diagnosis.

Shell relatively medium-sized, with reddish-brown oblique zigzags on the penultimate and last whorl, becoming irregularly spaced dots on the dorsal side of last whorl which is sculptured with longitudinal striae and finely impressed spiral lines, resulting in coarse, oblong granules; suture regularly descending in front, peristome narrowly expanded and reflexed.

Dimensions.

Shell height 37.7, diameter 21.6 mm ( semipictus Hidalgo).

Distribution.

Ecuador, Prov. Bolivar, N of Bucay; Prov. Cotopaxi, Sigchos; Prov. Imbabura, Ibarra; Prov. Los Rios, Cerro Samana; Prov. Napo, Beaza; Prov. Pichincha, Santo Domingo de las Colorados; Prov. Tungurahua, Topo (all Breure and Borrero 2008).

Ecoregion.

Eastern Cordillera real montane forests [NT0121], Napo moist forests [NT0142], Northwestern Andean montane forests [NT0145].

Remarks.

Of the two taxa mentioned only type material of the junior subjective synonym Bulimus semipictus Hidalgo has been located.