Tropidophora zanguebarica ( Petit, 1850 )

Muratov, Igor V., 2010, Terrestrial molluscs of Cabo Delgado and adjacent inland areas of north-eastern Mozambique, African Invertebrates 51 (2), pp. 255-255 : 263

Tropidophora zanguebarica ( Petit, 1850)

Figs 8 , 57

Cyclostoma zanguebarica: Petit 1850: 53 , pl. 3, fig. 5 (Ile de Zanzibar; 10–12 × 10–12 mm).

Recorded from all three stations on Cabo Delgado, with a general coastal distribution from Kenya to Mozambique. Its relations with T. letourneuxi (Ancey in Bourguignat, 1887) should be re-evaluated (see remarks in Rowson 2007: 432). I prefer to use the earlier name here since variability of the shells from Cabo Delgado allows the application of both names. Resembles a small T. insularis but, unlike that species, co-occurs with T. ligata . Possibly just a coastal variation of T. insularis with size variability from 10.5×10.5 to 13.0×12.0 mm at a single locality.

Figures

Figs 3–14. Cyclophoridae: (3) Cyathopoma diegoense, 1.8×2.5 mm, stn 7. Maizaniidae: (4) Maizania wahlbergi, 11.5×15.2 mm, stn 3. Pomatiidae: (5) Tropidophora nyasana, 16.7×17.7 mm, stn 7; (6) T. ligata, 17.5×18.3 mm, stn 17; (7) T. insularis, 17.2×17.0 mm, stn 4; (8) T. zanguebarica, 11.0×10.8 mm, stn 9. Truncatellidae: (9) Truncatella marginata, 6.0×2.5 mm, stn 7. Pupillidae: (10) Pupoides coenopictus, 4.3×2.2 mm, stn 7. Gastrocoptidae: (11) Gastrocopta klunzingeri, 1.8×1.0 mm, stn 7. Vertiginidae (stn 7): (12) Nesopupa peilei, 1.7×1.0 mm; (13) Nesopupa corrugata, 2.0×1.0 mm; (14) Nesopupa bisulcata, 1.3×0.8 mm.Scale bar 1 mm in Figs 3, 10–14; 10 mm in Figs 4–8; 2 mm in Fig. 9.

Figs 56–61. Pomatiidae: (56) Tropidophora ligata, shell 15.5×15.3 mm, stn 7; (57) T. zanguebarica, shell 10.0×9.5 mm, stn 7; Cerastidae: (58) Rhachistia catenata, shell 10.0×6.3 mm, subadult, stn 1; Achatinidae:(59) Achatina immaculata,shell 102×56 mm,stn 1; Subulinidae:(60)Kempioconcha boivini, shell 16.0×8.4 mm, stn 1; (61) K. conradti, shell 13.7×6.2 mm, stn 8.