Lestes concinnus was described in 1862 jointly by
Hagen and
Sélys. Sélys described a new species,
Lestes umbrina in 1891 from the specimens he purchased that are collected by
Atkinson.
Laidlaw and
Fraser considered that this can be a synonym of
L. concinna. M.A. Lieftinck (1934) synonymised these two species and after that these two species were considered synonyms until 1960; he himself restored the status of these as two different species. Laidlaw also described another species,
Lestes thoracicus. Dumont et al. compared the specimens of these three species and concluded that they are synonyms as no structural differences were found among the color forms, varying from pale sand-coloured to greenish-blue. ==Etymology==