Diagonozus sjoestedti Friese, 1909: 124–125, MMM FFF. Male lectotype : Tanzania, Kibonoto am Kilimandjaro, 1300-1900m, 1905, leg. Y. Sjostedt (MNHUB). Rasmussen and Ascher 2008: 100.
Halictus (Trichostoma) [!] sjoestedti (Friese): Friese 1909: 128, 152; Strand 1912: 131.
Thrinchostoma sjoestedti (Friese): Cockerell 1910: 506; Cockerell 1937: 106.
Thrincostoma [!] (Thrincostoma [!]) sjoestedti (Friese): Blüthgen 1930: 496, 498–499, 510, 513–514, 524, 533–534.
Thrinchostoma (Thrinchostoma) sjoestedti (Friese): Michener 1978: 521–524; Pauly 1999: 155, 176.

Diagonozus sjoestedti var. rufescens Friese, 1909: 125, MMM, FFF. Syntypes : Tanzania, Kibonoto am Kilimandjaro, 1300-1900m, 1905, leg. Y. Sjostedt, and Meru (NHRS). Rasmussen and Ascher 2008: 92.
Thrinchostoma sjoestedti var. rufescens (Friese): Cockerell 1916: 205, ?syn. torridum.
Thrincostoma [!] (Thrincostoma [!]) sjoestedti var. rufescens (Friese): Blüthgen 1929: 29 ; Blüthgen 1930: 496, 513–514, 524, 533.
Thrinchostoma sjoestedti rufescens (Friese): Cockerell 1936: 8.
Thrinchostoma (Thrinchostoma) sjoestedti var. rufescens (Friese): Michener 1978: 524; Pauly 1999: 155, 176.

Thrinchostoma millari Cockerell, 1916: 205–206, MMM. Male lectotype: South Africa, Durban, 24.XI.1915, leg. H.M. Millar (DMSA). Cockerell 1917: 45; Cockerell 1920: 304; Cockerell 1933: 25.
Thrincostoma [!](Thrincostoma [!]) millari Cockerell: Blüthgen 1930: 496, 499, 514, 524, 534.
Thrinchostoma (Thrinchostoma) millari Cockerell: Michener 1978: 524; Pauly 1999: 155.

Thrincostoma [!](Thrincostoma [!]) mwangai Blüthgen, 1930: 526–527, 535, FFF. Female holotype: Uganda, Entebbe, 22.viii.1911, leg. G.C. Gowdey (BMNH).
Thrinchostoma mwangai Blüthgen: Cockerell 1936: 9.
Thrinchostoma (Thrinchostoma) mwangai Blüthgen: Michener 1978: 524; Pauly 1999: 155, 174.

Thrincostoma [!] (Thrincostoma [!]) ugandae Blüthgen, 1930: 526–527, 536, FFF. Female holotype : Uganda, entre Seziwa River et Kampala, 3500-3750ft, 27-31.VIII.1911, leg. S.A. Neave (BMNH).
Thrinchostoma ugandae Blüthgen: Cockerell 1936: 9.
Thrinchostoma (Thrinchostoma) ugandae Blüthgen: Michener 1978: 525; Pauly 1999: 155, 177.

Thrinchostoma umtaliense Cockerell, 1936: 8, MMM. Male holotype : Zimbabwe, Xmas Pass, Umtali, 20-21.v.1932 (AMNH).
Thrinchostoma (Thrinchostoma) umtaliense Cockerell: Michener 1978: 525; Pauly 1999: 155.

Remarques :

T. ugandae: The type has the terga red and probably corresponds to the variety rufescens. The scutum bears few tomentum and setae on the last terga are pale.

T. umtaliellum cited in the index of Pauly (1999: 177), followed in the catalog of Urban & Eardley (2010), is a slip for T. umtaliense.