Genus NEOPACHYGASTER Austen

Neopachygaster Austen, 1901: 245 . Type species, Pachygaster meromelaena Dufour, 1841, by original designation.

Neopachygaster stigma Lindner.

Neopachygaster stigma Lindner, 1938: 30 . ST 2 ♂, 1 ♀ [IRSNB], 1 ♂ [SMNS]: Zaire: Rutshuru; ST 1 ♀ [MRAC]: Zaire: Flandria .

Neopachygaster umbrifera Lindner, 1966a: 360 . ST 4 ♂ ♀ [MRAC], 1 ♂ ♀ [SMNS]: Zaire: Yangambi. Syn. nov.

We examined a female syntype [IRSNB] of Neopachygaster stigma (Fig. 7), the syntype series of N. umbrifera and additional material with an apical wing spot, and we could not find any differences among the specimens, so we therefore consider the two taxa as conspecific.