Venezuelan tepuis are a fascinating environment for land snails, and several new species have been described during recent years. Material from tepuis previously unexplored for their malacofauna comes in occasionally. Earlier this year Phillippe Kok (Free University, Brussels) showed some material from Angasima tepui, and one of the species appeared to be new to science.
Today a new paper was published written together with Francisco Borrero (Borrero & Breure 2011). It revises the Amphibulimidae (genera Dryptus and Plekocheilus) from Colombia and adjacent areas.
The last species in this short series is Plekocheilus (P.) vlceki Breure & Schl??gl, 2010. As the mandibula appeared not clean enough to give good quality pictures, I here only give an overview of the radula and details of the central part and the marginal teeth.
The fourth species in this series is Plekocheilus (Eurytus) nebulosus Breure, 2009. Again, the mandibula and three photographs of the radula.
As continuation of this series, today photographs of Plekocheilus (Eurytus) breweri Breure & Schl??gl, 2010.
The second species for which I provide SEM pictures is Plekocheilus (Eurytus) tatei Haas, 1955. Again, photographs of the mandibula, of the central part of the radula, of the marginals, and overview to show the shape of the transverse rows.
For a review of the malacofauna from the tepuis in Southern Venezuela and the adjacent area in Brazil, I recently made a series of Scanning Electron Microscope photographs. As not all pictures will make it to the publication – being slight variations on the same theme – I choose to make the photographs available here.
In their book on the molluscan names introduced by C.F. Ancey, Wood & Gallichan (2008) gave many samples of handwritten labels by Ancey. The only label they held as an original Ancey type label that has been written on a type writer was Eurytus couturesi Ancey, 1900 (Wood & Gallichan, 2008: pl. 9 fig. x).
Another species of this genus, Plekocheilus (Eudolichotis) aurissciuri (Guppy, 1866), collected at Paramaribo, Suriname. From upper right clock-wise: half row (note that is probably a truncated radula), marginals 14-16, marginal 4, marginal 1, marginals 8-18, central and first eight lateromarginals.
Some old pictures again today, this time of Plekocheilus (P.) aurissileni (Born, 1780). From upper left, clock-wise: central part of radula, overview of half a row, lateromarginals 10-13, idem 43-51, interaction between rows, lateromarginals 27-35.