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Taxon profile

species

Melanopsis magnifica Bourguignat, 1884

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  family Melanopsidae »  genus Melanopsis

Endangered EN

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Taxon in country check-lists*

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Description

Melanopsis magnifica is a very attractively ribbed melanopsid endemic to Morocco (approximately from Berkane to Fez to Ouadi Korifla); there have been Algerian records in the past but most likely extinct there nowadays. Its distribution is very patchy with small areas of distribution scattered around its range which totals up to less than 500km2. It is extremely variable with many subspecies / forms named, shown here is the subspecies M. m. expansa Pallary, 1920; it is not clear whether these merely reflect variations due to environment differences or distinct evolutionary lineages. A freshwater herbivorous / detritivorous grazer, it is found in medium-sized river streams with low water level and inhabit sandy to stony bottoms. Fresh specimens are covered by a layer of rather thick and very dark periostracum. Typical shell length around 25mm., very large specimens occasionally approach 40mm. It is listed as Endangered on the IUCN Red List, primarily due to habitat degradation as many of its patchy habitats are found close to areas of urbanisation.
Avon C. 2016 . Gastropoda Pacifica.
Author: Jan Delsing

Included taxa

Number of records: 4

varietas Melanopsis magnifica var. concolor P.M. Pallary, 1927

Melanopsis magnifica var. concolor

varietas Melanopsis magnifica var. expansa Pallary, 1920
varietas Melanopsis magnifica var. ingens Pallary, 1928

Links and literature

EN IUCN Red List of Threatened Species 2018-1 [184502]

IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [as Melanopsis magnifica Bourguignat, 1884]
Data retrieved on: 3 August 2018
EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Melanopsis magnifica (Bourguignat, 1884)]
Data retrieved on: 22 November 2013

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