Synopsis of Central Andean Orthalicoid land snails (Gastropoda, Stylommatophora), excluding Bulimulidae Author Breure, Abraham S. H. Author Avila, Valentin Mogollon text ZooKeys 2016 588 1 199 http://dx.doi.org/10.3897/zookeys.588.7906 journal article http://dx.doi.org/10.3897/zookeys.588.7906 1313-2970-588-1 EC4E9A71F7B948D2B245F8DA8C0907FA Taxon classification Animalia Stylommatophora Amphibulimidae Plekocheilus (Eurytus) oligostylus Pilsbry, 1939 Figs 10 A-B , 14 Plekocheilus oligostylus Pilsbry 1939 : 3, fig. 6. Plekocheilus jimenezi ; Richardson 1995 : 315 (references, excl. synonymy). Plekocheilus (Eurytus) jimenezi oligostylus ; Breure and Borrero 2008 : 6. Type locality. "Colombia" , see remarks. Type material. ANSP 170696, lectotype (Baker, 1963). Diagnosis. Shell relatively large, solid, with oblique series of more or less spirally arranged reddish-brown spots, evenly and dense granulation, suture somewhat descending in front, aperture ovate. Dimensions. Shell height 71.0, diameter 47.0 mm. Distribution. Ecuador, Prov. Napo, Nachiyacu; ibid., Sarayacu; ibid., valley Rio Quijos; Prov. Pastaza, Puyo; ibid., Mera (all Breure and Borrero 2008 ). Ecoregion. Eastern Cordillera real montane forests [NT0121]. Remarks. Clench and Turner (1962 : 109) have pointed out that the original locality was erroneous; the type locality should be Nachiyacu. This taxon has been synonymized by Richardson (1995) with Plekocheilus (Eurytus) jimenezi , but without any comments. The shape of the aperture in the type specimen may not be entirely typical; it does not show the ascending suture behind the lip typical of Plekocheilus (Eurytus) jimenezi , and the aperture is different in shape. Tentatively we have retained this taxon as a separate species, as it may be sympatric with Plekocheilus (Eurytus) jimenezi , awaiting further studies in the area.