Sinistrexcisa, a New Genus of Land Snail from Central West Africa with Four New Species (Gastropoda: Pulmonata: Streptaxidae) |
| |
| Authors: | De Winter AJ; Gomez BJ; Prieto CE |
| |
| Institution: |
1 Institute of Evolutionary and Ecological Sciences, c/o National Museum of
Natural History, P.O. Box 9517, 2300 RA Leiden, The Netherlands;
2 Universidad del País Vasco, Dpto. de Zoología y
Dinámica Celular Animal, Apdo 644, 48080 Bilbao, Spain |
| |
| Abstract: | A new genus of Streptaxidae with four new species is describedfrom Central West
Africa, viz. Sinistrexcisa cameruniae (typespecies) from Southwest Cameroon, and S. iradieri, S. cogoensisand S. fang from Equatorial Guinea. In addition to the
shells,the genital anatomy of three species and the radula of one speciesare described. The
species of Sinistrexcisa resemble some taxaof the heterogeneous genus Ptychotrema s.l., but differ conchologicallyby, among others, the extremely long and
displaced aperturalsinus and the sinistrally coiled last quarter whorl, and anatomicallyby the
morphology of the penis, especially the inner spinulation.A spermatophore was observed in the
lower (distal) portion ofthe penis of a specimen of S. fang. This is probably the first
recordof a spermatophore in the family Streptaxidae. (Received 9 October 1997; accepted 1 July 1998) |
| |
| Keywords: | |
| 本文献已被 Oxford 等数据库收录！ |
|
