Data/hora: 10/06/2024 06:36:50

Provedor de dados: | 16
País: | Netherlands
Título: | Revisionary notes on Negulus O. Boettger, 1889, a genus of minute African land snails (Gastropoda Pulmonata: Vertiginidae)
Autores: | Bruggen, A.C. van.
Data: | 1994
Ano: | 1994
Palavras-chave: | Gastropoda; Pulmonata; Vertiginidae; Negulus; Africa; St. Helena Is.; Taxonomy; 42.73.
Resumo: | 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.
Tipo: | Article / Letter to the editor

Identificador:

http://www.repository.naturalis.nl/record/318176

http://www.repository.naturalis.nl/document/149462

Formato: | application/pdf
Fonte: | Zoologische Mededelingen (0024-0672) vol.68 (1994) nr.2 p.5
Fonte: | (c) Naturalis