Female genitalia of Synanthedonini. 7 Synanthedon auritinctaoidis Liang & Hsu, sp. nov. paratype (NTNU) 7a antrum. 8 Paranthrenella helvola Liang & Hsu, sp. nov. paratype (NTNU) 8a antrum. Scale bars: 1 mm; 0.1 mm (7a, 8a).