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) taylorianus (Reeve, 1849)
Figs 5F, 6
D-F
, 9B, 15
Bulimus taylorianus
Reeve 1849 [1848-1850]: pl. 81 fig. 602;
Breure and Ablett 2011
: 42, figs 24
A-C
, 24i.
Eurytus taylorioides minor
Miller 1878
: 181, pl. 4 fig. 1;
Miller 1879
: pl. 7 fig. 1.
Plekocheilus taylorianus
;
Richardson 1995
: 322 (references, synonymy).
Plekocheilus (Eurytus) taylorianus
;
Koehler
2007
: 127, fig. 5;
Breure and Borrero 2008
: 7;
Borrero and Breure 2011
: 42, figs 15
C-D
.
Type locality.
[Ecuador] "Environs of Quito".
Type material.
NHMUK 1874.12.11.271, lectotype (
Breure 1978
: 16).
Diagnosis.
Shell relatively large, with reddish-brown oblique zigzags on the penultimate whorl, becoming irregularly spaced dots on the last whorl which is sculptured with fine granulation (Fig. 6F), suture descending in front, rapidly descending behind lip, aperture ovate, peristome simple.
Dimensions.
Shell height 58.5, diameter 31.0 mm.
Distribution.
Ecuador, Prov. Chimborazo, Mt. Chimborazo; Prov. Cotopaxi, Sigchos; Prov. Imbabura, Ibarra; Prov. Napo, Nachiyacu; Prov. Pastaza, Mera; ibid., Puyo; Prov. Pichincha, Nanegal; ibid., Pacto; ibid., Pintag; ibid., Gualea; Prov. Tungurahua, Topo (all
Breure and Borrero 2008
).
Ecoregion.
Northwestern Andean montane forests [NT0145].
Remarks.
Pilsbry 1895 [1895-1896]: 88 regarded this species as closely resembling
Plekocheilus (Eurytus) piperitus
(Sowerby I, 1837), with which we concur. Also
Plekocheilus (Eurytus) roseolabrum
(E.A. Smith, 1877) may be added to this group.
Plekocheilus (Eurytus) taylorianus
differs mainly in its larger size and the fine granulation on the last whorl (Fig. 5F).