27. Burnupia trapezoidea (O. Boettger, 1910)

Distribution and year: Matopa Pan, Ngamiland N/A (Connolly 1939).

Geographic range: Botswana, Namibia, South Africa.

Habitat: Freshwater.

Notes: The species occurs in sufficiently oxygenated waterbodies (Kristensen & Appleton 2010). De Kock and Wolmarans (2017) further mention the potential of the molluscs as an indicator of the freshwater ecosystem health.

Type locality: “Witkop in British Bechuanaland near the German border”, Limpopo Province, South Africa (Boettger 1910). The type locality of this species seems erroneously attributed to Botswana (see Discussion for suggested correction) .

Sources: Connolly (1939: 517, as a subfossil); van Bruggen (1966 a: 109); Brown (1994: 177); de Kock & Wolmarans (2017: 260).

Conservation status: Data Deficient. The species is possibly facing threat due to habitat loss and degradation (de Kock & Wolmarans 2017).