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

Treatment

( 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)

References

Figures

Tables

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