Tag Archives: types

Hispaniolan Weinlandipoma

Freshly pressed: a review by Thomas Watters of twenty Weinlandipoma species from Hispaniola, with description of seven new taxa: W. charybdis, W. corbis, W. formonense, W. gregoi, W. pruinosum, W. silmarilium, and W. tylotum. Species are distributed on either the Massif de la Hotte or the Massif de la Selle on the Tiburon Peninsula of the island. Most are locally endemic, often confined to a single mountain peak or slope or island. All are currently susceptible to extinction.

This is another sound contribution of Watters to the malacofauna of the Caribbean area.

Reference:
Watters, G.T., 2017. A review of Weinlandipoma (Gastropoda, Littorinoidea, Annulariidae) from the Tiburon Peninsula of Hispaniola: imperiled local endemics. – Basteria, 81 (4-6): 65-89.

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Montagu types

Oliver et al. have just published an impressive paper dealing with re-located type material of Colonel George Montagu (1753-1815).

“A complete list of new molluscan taxa introduced by Col. George Montagu (1753–1815) is presented. The available type material of these taxa are itemised and illustrated. The majority are present in the Royal Albert Memorial Museum & Art Gallery, Exeter with a smaller number in the Natural History Museum, London. The historic background of both collections is reviewed with special reference to the many non-British species spuriously introduced into Testacea Britannica and its Supplement”.

I know that locating historical collections doesn’t sound like rocket-science. but in our discipline where ‘every name counts’ it is really very helpful to have type material from our deceased colleagues available for study. And, of course, the further back in time the more difficult it becomes to locate this material and track its provenance.

In the paper also some Neotropical material turned up, quite unexpected for someone who worked on ‘Testacea Britannica’ (i.c. British shells)!

Here is his Helix detrita Montagu, 1803 not Müller, 1774. It proved to be a specimen of Drymaeus elongatus (Röding, 1789), a West Indian species…

Finally, it’s worth repeating here the last lines of their paper: “It is sad to report that those with a knowledge of historic conchology are diminising in numbers and that curatorial expertise throughout the museum sector is threatening the value and access of many collections”.

Reference:
Oliver PG, Morgenroth H, Salvador A (2017) Type specimens of Mollusca described by Col. George Montagu in the Royal Albert Memorial Museum & Art Gallery, Exeter and The Natural History Museum, London. Zoosystematics and Evolution 93(2): 363-412. https://doi.org/10.3897/zse.93.13073

Galapagos micromolluscs

An interesting paper was recently published by Miquel & Bungartz on micromolluscs found among Galapagos lichens and bryophytes, including a new species.

The new species is a carnivorous snail, Scolodonta rinae, and this family is reported for the firt time from the Galapagos. Other species that were encountered are Pupisoma galapagorum, P. dioscoricola, Tornatellides chathamensis, Helicina sp., and Succinea sp.

The new species was found on the island of Santa Cruz.

Reference:
Miquel, S.E. & Bungartz, F., 2017. Snails found among herbarium specimens of Galapagos lichens and bryophytes, with the description of Scolodonta rinae (Gastropoda: Scolodontidae), a new species of carnivorous micro-mollusk. – Archiv für Molluskenkunde, 146 (1): 173-186.

New Scutalus from Chile

Freshly published: a paper with the description of a new species from northern Chile. The species, of which only shells were collected, is tentatively assigned to the genus Scutalus. This genus is hitherto not recognised in Chile, but occurs more northern in the coastal area of Peru.

The abstract reads “A new species of Scutalus Albers, 1850 (Gastropoda: Bulimulidae), Scutalus chango sp. n., is described from a coastal area of northern Chile. Empty shells of this new species were found buried in sand and under boulders and rocks in the foothills of the Chilean Coastal Range at Paposo, Región de Antofagasta. This new species is distinguished from all other Chilean terrestrial snails by its slender shell with a flared and reflected aperture, and by the presence of a columellar fold. This is the first record of Scutalus in Chile, and the southernmost record for this endemic South American bulimulid genus. The presence of this species in Paposo highlights the need for further research and for conservation guidelines in coastal areas of northern Chile, which have comparatively high levels of biodiversity and endemism”.

Reference:
Araya, J.F. & Breure, A.S.H., 2017. A new terrestrial snail species (Gastropoda: Bulimulidae) from the Región de Antofagasta, northern Chile.  PeerJ 5: e3538 (11 p.).

Biosecurity officers alert!

On the “Mollusca” listserver the following newsitem was posted:

May I add another experience to it?

When Valentín Mogollón and I described a new species last year in our paper Synopsis…, viz. Thaumastus sumaqwayqu, I returned the three specimens (shells only) which served as paratypes to Peru.

Our museum staff, very well experienced in shipments of biological material, sent the material with registered mail addressed to Mogollón. And indeed, we were “very upset” when shortly after the package had been shipped, we learned that quarantaine officers in Lima had seized the package as there was a (new) form missing from the accompanying papers.

Not being able to import the type material into the country, we requested to have it returned. But to our astonishment this appeared impossible. For the return shipment too the same form about the ‘health’ of the material (shells only!) was needed…

A truly Catch-22 situation.

After some deliberation only one conclusion was possible: there was no way out and the specimens had to be destroyed. What indeed happened.

New Epiphragmophoridae from Brazil

Just published: a paper by Cuezzo & Pena describing a new genus and species of Epiphragmophoridae; their abstract reads as follows “We describe a new genus and a new species in the family Epiphragmophoridae, Minaselates paradoxa sp. n. The new species was found at the National Park Cavernas do Peruaçu, in northern portion of the state of Minas Gerais, Brazil. Minaselates paradoxa sp. n. is classified in Epiphragmophoridae based on the fact that it shares the following diagnostic features of the family: a dart apparatus with a single dart sac, and two unequal mucous glands at the terminal genitalia. Minaselates gen. n. differs from Epiphragmophora Doering, 1874 by having a granulose protoconch, shell spire with blunt apex, complex microsculpture on the teleoconch and closed umbilicus fused with the shell wall. Also, significant differences between the two genera are the presence of a long and thin kidney that extends more than half the length of the pulmonary cavity, the presence of a flagellar caecum, and a smooth jaw in Minaselates gen. n. The finding of this new species and genus is particularly significant to refine the definition of the family, since Epiphragmophoridae has been traditionally diagnosed using the same characters of Epiphragmophora. Dinotropis Pilsbry & Cockerell, 1937, the other valid genus in the family, is monospecific and is only known by the morphology of the shell. In many ways it is similar to Epiphragmophora. A cladistics analysis was made in the present study which supports Minaselates gen. n. as a different entity and as sister group of the Epiphragmophora within Epiphragmophoridae”.

Reference:
Cuezzo, M.G. & Pena, M.S., 2017. Minaselates, a new genus and new species of Epiphragmophoridae from Brazil (Gastropoda: Stylommatophora: Helicoidea). – Zoologia, 34: e13240 (12 pp.). DOI: 10.3897/zoologia.34.e13230

New fossil Pupoides

Cabrera & Martinez (2017) have just published a paper on minute pupillids. “A new species of Pupoides Pfeiffer 1854, subgenus Ischnopupoides Pilsbry 1926, is described for the Late Cretaceous of Uruguay (Queguay Formation), being the oldest record of the genus and subgenus. Pupoides (I.) gnocco new species is characterized by a small dextral fusiform shell, constituted by a spire comprising five slightly convex whorls, oblicuous axial ornamentation, subrounded aperture, and an expanded outer lip that lacks dentition”.

Reference:
Cabrera, F. & Martinez, S., 2017. Late Cretaceous Pupoides Pfeiffer 1854 (Gastropoda: Pupillidae) from  Uruguay (Queguay Formation). – Journal of Conchology, 42 (5):333-338.