Plekocheilus (Eurytus) taylorianus ( Reeve, 1848 )

Borrero, Francisco J. & Breure, Abraham S. H., 2011, The Amphibulimidae (Mollusca: Gastropoda: Orthalicoidea) from Colombia and adjacent areas, Zootaxa 3054, pp. 1-59 : 42-43

Plekocheilus (Eurytus) taylorianus ( Reeve, 1848)

( Figs 15 C–D)

Bulimus taylorianus Reeve 1849 : pl. 81 fig. 602. Type locality: Ecuador, near Quito, Chimborazo. Lectotype BMNH 1874.12.11.271 ( Breure 1978). Plekocheilus taylorianus (Reeve) ; Richardson 1995: (references, synonymy; see remarks).

Material. Ecuador. Chimborazo, Mt. Chimborazo, 21424 ft [6424 m, in error], ex Evezard Colln ex Henderson Colln: USNM 316070; Cotopaxi, Sigchos, W Latacunga: DMNH 141642; Imbabura, Ibarra: DMNH 128769; Napo, Nachiyacu : DMNH 141669; Topo: DMNH 76772, DMNH 128672, DMNH 151005); Pastaza, Mera: FMNH 202059, DMNH 141649, DMNH 183697; Puyo: DMNH 141684; Pichincha: DMNH 141681; Milpe: UF 166225 [not seen], DMNH 141658; Mindo: DMNH 141664, UF 166226 (near Rio Blanco) [not seen]; Nanegal: EPN; Pacto: EPN; Pintag: EPN; Gualea: FMNH 61138, FMNH 31173, CM 106225 (A. Cousin leg./1898); Quito, Stearns Colln: UMMZ 13841.?, “ Ecuador:” CMC C11056, CMC C11057, FMNH 100722, RMNH.? “ Peru,” F.M. Hele leg.: UMMZ 147732.

Remarks. The records available suggest that P. taylorianus is confined to Ecuador, but it may extend into northernmost Peru. Köhler (2007): 127, fig. 5 mentioned a paralectotype in Berlin (ZMB 112.722). However, the picture shown is a different species of Plekocheilus . The lots available do not have actual records of altitude, but several of the localities listed are in the ~ 2200–2890 m range. However, Archidona and Puyo are lower (605 and 950 m), and a wide range of altitudes exists around Mindo (1400–4780 m). The label of lot USNM 316070 is clearly in error as the maximum elevation of Mt. Chimborazo is 6310 m; it is likely that those specimens were collected at a much lower elevation in the foothills of Chimborazo.

Figures

FIGURE 15. Plekocheilus (Eurytus). A – B. P. (E.) jimenezi (Hidalgo, 1872), lectotype of oligostylus Pilsbry, ANSP 170696 (H 71 mm). C – D. P. (E.) taylorianus (Reeve, 1848), lectotype BMNH 1874.12. 11.271 (H 57.5 mm), photo P. Crabb. E – F. P. (E.) cardinalis (Pfeiffer, 1853), lectotype ZMB 112721 (H 42 mm), photo L. Matias. G – H. P. (E.) castaneus (Pfeiffer, 1845), ANSP 78580 (H 65 mm). I – J. P. (E.) doliarius (Da Costa, 1898), lectotype BMNH 1907.11. 21.117 (H 55.5 mm), photo P. Crabb. K – M. P. (E.) lugubris (Dunker, 1882), MZSP 49310 (H 56 mm). N – O. P. (E.) incognitus spec. nov., holotype UAM (H 56 mm).