Plekocheilus (Eurytus) mundiperditi Haas, 1955

Breure, Abraham S. H., 2009, New Orthalicidae (Mollusca, Gastropoda) from Venezuelan Guayana: unravelling secrets from the Lost World, Zootaxa 2065, pp. 25-50 : 32-33

publication ID

https://doi.org/ 10.5281/zenodo.186920

DOI

https://doi.org/10.5281/zenodo.5618349

persistent identifier

https://treatment.plazi.org/id/CF1A2655-FFDE-BD60-E9A6-FA641A78FD21

treatment provided by

Plazi

scientific name

Plekocheilus (Eurytus) mundiperditi Haas, 1955
status

 

Plekocheilus (Eurytus) mundiperditi Haas, 1955

( Figs 6 View FIGURE 6 A─C, 9E)

Plecocheilus (Eurytus) mundi-perditi Haas, 1955: 378, fig. 80. Type locality: Venezuela, State of Bolívar, Chimantá massif near Río Tirica, 2100 m; holotype FMNH 52436.

Material. Venezuela, Estado Bolívar, Chimantá massif, 2100 m, J.A. Steyermark leg., 4.ii.1955 ( FMNH 52436/ holotype, 52437/1 paratype); Ibidem, central part of Chimantá massif, slopes bordering tributary of east branch of headwaters of Río Tirica, 2450 m, J.A. Steyermark & J.J. Wurdack leg., 27.iii.1955, in Bonnetia forest ( FMNH 52440/1 paratype); Ibidem, Aparamán-tepui above Río Tirica, 2120 m, J.A. Steyermark & J.J. Wurdack leg., 26.ii.1955 ( FMNH 52438/1 paratype); Ibidem, Toronó-tepui, bordering valley of Caño Mojado, 2250 m, J.A. Steyermark leg., 21.ii.1955 ( FMNH 52439/1 paratype); Ibidem, along trail between Río Tirica and lower summit camp, 1800 m, J.A. Steyermark & J.J. Wurdack leg., 26.ii.1955 ( FMNH 52441/1 paratype); Ibidem, Eruado-tepui [= Murey-tepui], 2300 m, R.W. McDiarmid leg., 24.ii.1978 (UF 22945/1 + 5 juv., 22946/2); Ibidem, summit of Apacará-tepui, ca. 2150 m, 5° 19’ N 62° 12’ W, S. Gorzula & O. Huber leg., 11─ 14.iii.1986, in herbaceous vegetation ( RMNH 112030 /1).

Shell dimensions are given Table 1 View TABLE 1 .

Remarks. This species is widespread on the Chimantá massif and is characterized by its dark brown colour and its sculpture of puckered spiral bands (Fig. 9E).

Plekocheilus (Eurytus) fusitorsus ( Oberwimmer., 1931) (n=2)

TABLE 1. Dimensions in selected species of Plekocheilus and Drymaeus in mm. Abbreviations: D, shell diameter; H, shell height; HA, height of aperture; LW, height of last whorl; M, mean; max, maximum; min, minimum; n, number of specimens measured; s, standard deviation; W, number of whorls; WA, width of aperture. For depositories of material, see section on material and methods.

  H D HA WA LW W
Plekocheilus (Eurytus) mundiperditi (Haas. 1955) (n=5)            
M s 47.3 3.3 26.1 1.6 26.2 1.5 15.2 1.1 40.7 2.3 4.4 0.1
max 52.3 28.4 28.4 16.9 43.9 4.6
min 44.0 24.5 24.9 14.3 38.3 4.3
FMNH

Field Museum of Natural History

RMNH

National Museum of Natural History, Naturalis

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Stylommatophora

Family

Orthalicidae

Genus

Plekocheilus

Loc

Plekocheilus (Eurytus) mundiperditi Haas, 1955

Breure, Abraham S. H. 2009
2009
Loc

Plecocheilus (Eurytus)

Haas 1955: 378
1955
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