Costigulella primennilus spec. nov. is the first representative of Costigulella reported from Cameroon. It is probably the smallest species of the family Streptaxidae known world-wide. Arguments are provided to consider Costigulella an independent radiation and genus, rather than a subgenus of Gulella. The mode of development of apertural barriers in juvenile shells in Costigulella and in other Streptaxidae is discussed.

Mollusca, Gastropoda, Gulella, Costigulella, new status, new species, distribution, Africa, Cameroon, shell development, apertural barriers
Zoologische Mededelingen

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Naturalis journals & series

de Winter, A.J. (2008). Costigulella primennilus spec. nov., a new minute western African terrestrial snail, with remarks on the genus Costigulella (Gastropoda Pulmonata: Streptaxidae). Zoologische Mededelingen, 82(23), 245–251.