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| Author | A.C. van Bruggen | | Title | Revisionary notes on Negulus O. Boettger, 1889, a genus of minute African land snails (Gastropoda Pulmonata: Vertiginidae) |
| Journal | Zoologische Mededelingen |
| Volume | 68 |
| Year | 1994 |
| Issue | 2 |
| Pages | 5-20 |
| ISSN | 0024-0672 |
| Keywords | Gastropoda; Pulmonata; Vertiginidae; Negulus; Africa; St. Helena Is.; taxonomy |
| Abstract | The genus Negulus is reviewed; only four Recent species, restricted to continental Africa, are recognized.
The genus is extinct in Europe, being only recorded from Tertiary deposits. A key to the shells of the Recent species (all figured) is supplied. The anatomy is as yet unknown. A sinistral shell of N. abyssinicus is described from among a series of paralectotypes in the Leiden Museum, the first such abnormality in the genus (figured). A fair amount of shell material has become available (among which some historical specimens) so that metric data may be compared with greater confidence. Recent occurrence is established/confirmed for Eritrea, Ethiopia, Sudan, Kenya, Tanzania, Zaire, Zambia, Malaŵi, and Bioko (Fernando Poo). The small size of the shell necessitates sampling forest leaf litter, a technique that has not been widely applied in Africa; undoubtedly the genus occurs much more widely in the Afrotropical Region. Pupa obliquicostulata from St. Helena Is. is removed from the genus because of the presence of apertural dentition. |
| Classification | 42.73 |
| Document type | article |
| Download paper |  http://www.repository.naturalis.nl/document/149462
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