New data on the cockroaches previously attributed to the genus Duchailluia Rehn, 1933 (Dictyoptera: Blattidae: Blattinae)

The new species of the genus Duchailluia Rehn, 1933, D . ivindo sp. nov., is described from Gabon. The genus Distylopyga Bey-Bienko, 1965 is restored from synonymy with Duchailluia . Distylopyga beccalonii sp. nov. from Thailand is described. Neostylopyga yemenica (Bey-Bienko, 1969) comb. nov. is transferred from Duchailluia . A detailed morphological descriptions of the new species are given, N . yemenica is redescribed inclusive male genitalia. The male genitalia of N . yemenica is described for the first time. The subfamily Duchailluiinae Roth, 2003 synonymized with Blattinae Latreille, 1810.