The genus Trigonuropoda was described by TRAGARDH 1952, with type spec
ies Urodinychus polyphemus Vitzthum 1935. TRAGARDH and VITZTHUM based
their taxa on two different series of specimens. HIRSCHMANN later cons
idered that TRAGARDH and VITZTHUM had been examining two different spe
cies, and created the new name T. tragardhi Hirschmann 1975 for T. pol
yphemus sensu TRAGARDH. This action led to confusion as to the identit
y of the type species of the genus. However, the characters that HIRSC
HMANN used to separate the two species are not valid. T. tragardhi Hir
schmann 1975 is a synonym of T. polyphemus (Vitzthum 1935), and the la
tter is the type species of the genus.