A Allacta transversa Bey-Bienko, 1969. Female B Allacta bimaculata Bey-Bienko, 1969. Female C Allacta robusta Bey-Bienko, 1969. Female D Allacta bruna He, Zheng, Qiu, Che & Wang, 2019. Female A–D supra-anal plate, dorsal view. Scale bars: 1 mm. Abbreviations: a.a. anterior arch, bsv. basivalvula, intc.s. intercalary sclerite, ltst.sh. laterosternal shelf, pp. paraprocts, pt. paratergites, sp.pl. spermathecal plate, vlf.I first valvifer, v.I first valves, v.II second valves, v.III third valves.