Achatina randabeli Bourguignat, 1889

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 randabeli Bourguignat, 1889

Fig. 20

Achatina randabeli: Bourguignat 1889: 84 , pl. 5, fig. 6 (Tabora, Ounyanyembé; 55× 28 mm).

A rather uncommon species, previously known only from the type locality in central Tanzania. Found at five stations inland and two station on Cabo Delgado. One of the smaller species of Achatina . The largest shell from north-eastern Mozambique is 51× 26 mm. Achatina arctespirata (57× 32 mm) described by Bourguignat (1889: 83, pl. 5, fig. 7) from the southern region of Tanganyika is probably a synonym based on a freak specimen. Both species were considered subspecies of the Tanzanian A. craveni Smith, 1881 (type: 81× 37 mm) by Bequaert (1950: 50). Differs from all other species of the genus by the narrow-conical apex with straight outlines. Can easily be separated from similar sized species of Limicolaria by the strongly truncated columella.

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.