Gyraulus costulatus

Gyraulus costulatus is a species of air-breathing freshwater snail, aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.

Distribution
Gyraulus costulatus is widespread in Africa and distribution of Gyraulus costulatus include Algeria, Angola, Benin, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Chad, Congo, Egypt, mainland of the Equatorial Guinea, Eswatini, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Liberia, Malawi, Mali, Mauritania; Mozambique, Namibia, Niger, Nigeria, Senegal, Sierra Leone, South Africa, Sudan, Tanzania, Togo, Uganda, Zambia and Zimbabwe.

Description
All species within family Planorbidae have sinistral shells.