Achatina immaculata Lamarck, 1823

Muratov, Igor V., 2010, Terrestrial molluscs of Cabo Delgado and adjacent inland areas of north-eastern Mozambique, African Invertebrates 51 (2), pp. 255-255 : 267

Achatina immaculata Lamarck, 1823

Figs 19 , 59

Achatina immaculata: Lamarck 1822: 128 (height c. 152 mm).

A common, widespread eastern African species. Found at five stations inland and at one station on Cabo Delgado. Differs from all other species in the area by its large size (shell up to 200× 120 mm). Fresh shells differ from the similar most common A. fulica Bowdich, 1822 (not found in north-eastern Mozambique so far) by the pink columellar margin. Juvenile shells are even more common and can easily be separated from all other shells in the region by the large smooth protoconch.

Figures

Figs 15–25. Cerastidae: (15) Gittenedouardia metuloides, 6.0×3.6 mm, subadult, stn 1; (16) Rhachistia catenata, 13.2×7.8 mm, stn 11; (17) Rachis cunctatoris, 19.1×8.6 mm, stn 5; (18) Limicena nyasana, 11.8×9.1 mm, subadult, stn 7. Achatinidae: (19) Achatina immaculata, 11.3×9.3 mm, juvenile, stn 1; (20) A. randabeli, 43.8×23.0 mm, stn 9. Subulinidae: (21) Kempioconcha cf. obtusa, 39.1×17.5 mm, two shells composite subadult, stn 14; (22) K. kirki, 30.2×13.9 mm, stn 6; (23) K. boivini, 17.8×9.1 mm, stn 5; (24) K. cf. subolivacea, 19.6×7.3 mm, stn 19; (25) K. conradti (von Martens, 1895), 15.4×6.4 mm, stn 5.

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.