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Record: oai:ARNO:318176

AuthorA.C. van Bruggen
TitleRevisionary notes on Negulus O. Boettger, 1889, a genus of minute African land snails (Gastropoda Pulmonata: Vertiginidae)
JournalZoologische Mededelingen
Volume68
Year1994
Issue2
Pages5-20
ISSN0024-0672
KeywordsGastropoda; Pulmonata; Vertiginidae; Negulus; Africa; St. Helena Is.; taxonomy
AbstractThe 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, MalaƔi, 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.
Classification42.73
Document typearticle
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