Monthly Archives: March 2015

Working in Geneva

The past two weeks were spent in Geneva, where I was guest curator in the Muséum d’histoire naturelle (locally known as the “Muséum”, but they have more…). The museum dates back to the early 19th century, but is currently housed in a modern building and well equipped.

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When I entered the museum through the staff corridor, I saw that a few previous exhibitions had been (partly) devoted on snails.

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The collection is in the Invertebrates Department, and stored in ‘Compactus’ cabinets which allow efficient storage. Once inside, the cabinets are open and the shells are mostly in carton boxes, usually packed in plastic. The historical collection is integrated and has (parts of) the collections of Angrand, Bourguignat, Brot, Delessert, Favre, Jayet, Kehrli, Lamarck, Morelet, Moricand, Paladilhe, Piaget, Récluz. For my research I was mainly interested in those of Angrand/Morelet, Brot, Lamarck and Moricand.

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When one starts to dig in historical collections, one always wonders if a handwriting may be attributed to the person who described the taxon, or that the original label has been lost and the current label was written by a later person (e.g., a curator). Original labels of Moricand have been found, also of Lamarck, but those of Morelet’s taxa were different than the ones found in London; however, the material was from the “Angrand collection” on which Morelet based his descriptions. Perhaps some more archival research is needed, but budget reductions have this capacity in Geneva severely reduced.

Currently processing all data gathered and happy to say that this not only will result in a type catalogue (comparable to those I made for Brussels, London and Berlin museums), but also in a bio- and bibliography of Moricand senior and junior.

Finally, some pictures that I took in the exhibition, where on the second floor is a small representation of the Mollusca.

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New Ecuadorian Zilchistrophia

The Ecuadorian malacofauna is poorly known and the family Scolodontidae is not well-researched within South America. A new paper by Páll-Gergely & Asami (2014) supplies new data on both topics.

The abstract reads: “Two new species of the genus Zilchistrophia Weyrauch, 1960 are described from Eastern Ecuadorian rain forest: Zilchistrophia hilaryae sp. n. and Z. shiwiarorum sp. n. These two new species extend the distribution of the genus considerably northwards, because congeners have been reported from Peru only. For the first time we present anatomical data (radula, buccal mass, morphology of the foot and the genital structure) of Zilchistrophia species. According to these, the genus belongs to the family Scolodontidae, subfamily Scolodontinae (=“Systrophiini”). The previously assumed systematic relationship of Zilchistrophia with the Asian Corillidae and Plectopylidae based on the similarly looking palatal plicae is not supported”.

Pall&Asami_f3

The presentation of anatomical data for these two species makes this paper very interesting. The discussion of the systematic position within the family rests on relatively few data from the literature. Molecular data for this group are very scanty and are not given for this material, but having tried in vain to sequence orthalicid material from the same collector this leads to no surprise.

Reference:
Páll-Gergely, B. & Asami, T. (2014). Description of two new Ecuadorian Zilchistrophia Weyrauch, 1960, with the clarification of the systematic position of the genus based on anatomical data (Gastropoda, Stylommatophora, Scolodontidae). – ZooKeys 453: 1–17.