Thrincostoma [!] (Thrincostoma [!]) emini Blüthgen, 1930: 498–499, 510, 514–515, 524, 533, MMM FFF. Male holotype : D.R. Congo, Albertville („am Westufer des Tanganijka”), leg. R. Mayné, XII.1918 (RMCA).
Thrincostoma [!] emini Blüthgen: Blüthgen 1933b: 375;
Thrinchostoma emini Blüthgen: Cockerell 1933p: 25.
Thrinchostoma (Thrinchostoma) emini (Blüthgen): Michener 1978b: 524; Pauly 1999a: 155, 173.

Thrincostoma [!] telekii Blüthgen, 1930: 498, 499, 509–511, 534, MMM. Male holotype : Kenya, Westside des Aberdare Gebirge, Landschaft Leikipia, 8300ft, 1.III.1911, leg. T.J. Anderson (BMNH).
Thrinchostoma telekii Blüthgen: Cockerell 1933: 25; Cockerell 1936: 7–9.
Thrinchostoma (Thrinchostoma) telekii Blüthgen: Michener 1978: 525; Pauly 1999: 155, 176.

Thrinchostoma michaelis Cockerell, 1933: 25, MMM. Male holotype : Elisabethville, 1.XII.1929, leg. Dr. M. Bequaert (RMCA). Pauly 1999: 155, 173, syn.
Thrinchostoma (Thrinchostoma) michaelis Cockerell: Michener 1978: 524.

Thrinchostoma undulatum Cockerell, 1936: 7–8, MMM. Male holotype : D.R. Congo, Katanga, Tenke, 30.VII-9.VIII.1931, leg. Miss A. Mackie (AMNH).
Thrinchostoma (Thrinchostoma) undulatum Cockerell: Pauly 1999: 155, 177.

Diagnosis. The male antenna with only 12 segments is very characteristic. The form of the last segment of the antennae in this species is more or less straight or flattened depending of the specimens. Then T. telekii falls within variations of T. emini.