Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 96. (Budapest 2004)

Verdcourt, B.: New and little known species of terrestrial Mollusca from East Africa and Congo (Kinshasa)

ANNALES HISTORICO-NATURALES MUSEI NATIONALIS HUNGARICI Volume 96 _ _ Budapest, 2004 pp. 299-315. New and little known species of terrestrial Mollusca from East Africa and Congo (Kinshasa) B. VERDCOURT Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, United Kingdom Abstract - Hydrocena tanzaniensis sp. n., Nesopupa bisulcata sinistra ssp. n., Edentulina parensis sp. n., Tayloria leroyi depressa ssp. n., Gidella kimbozae sp. n., G. pseudolkokolae sp. n., G. eoryi sp. n. and G. afrooccidentalis sp. n. are described as new taxa and further information is given about Nesopupa minutalis (MORELET, 1881), N. bisulcata bisulcata (JlCKELl, 1874), Cecilioides callipeplum (CONNOLLY, 1923), C. tribulationis PRESTON, 1911, Gulella ingloria (PRESTON, 1913), G. meruensis (D'AILLY, 1910), G. peakei VAN BRÜGGEN, 1975, G. olkokolae ADAM, 1965, G. hildae VAN BRÜGGEN, 2001, G. habibui TATTERSFIELD, 1998, G. coarctata (D'AILLY, 1910), Trachycystis lamellosa K. L. PFEIFFER, 1952, T. ariel (PRESTON, 1910) and Pisidium reticulatum KUIPER, 1966. With 20 figures. Key words - Mollusca, Pulmonata, Hydrocenidae, Vertiginidae, Ferussaciidae, Streptaxidae, Charopidae, Sphaeriidae, East Africa, Congo Kinshasa. INTRODUCTION In February, 2002, Dr. ZOLTÁN FEHÉR of the Hungarian Natural History Museum (HNHM) asked me to examine a collection of non-marine Mollusca which had been made by several Hungarian naturalists whilst working in mostly East Africa. Just over 300 lots of material were involved mostly consisting of one species but others with up to ten different species. Much of this material consisted of small mostly indeterminate juveniles, indeterminate worn specimens or of species belonging to genera in need of revision. Even with abundant good material it would be foolish to describe supposedly new species in such genera. There were for example hundreds of a species of Thapsia a genus (or more likely a group of several genera) which cannot be revised until a great deal of anatomical work has been done on topotypes of numerous mostly ± identical - appearing 'species' described from shells alone. There are, however, some very distinctive species in better known genera which appear to be undescribed, some unfortunately represented by only one specimen; several of these are described below. Mention is also made of specimens, which add to our knowledge of previously described species.