Aphis (Toxoptera) sennae Cheng & Huang, sp. nov., apterous viviparous female A dorsal view of body B dorsal view of head C antennal segments I–III D antennal segments V–VI E mesosternal furca F ultimate rostral segment G siphunculus H genital plate I cauda J ventro-lateral stridulatory ridge of abdominal segments IV–VI K stridulatory ridge L anal plate M peg-shaped hairs on hind tibia N marginal tubercle on prothorax O marginal tubercle on abdominal segment I P marginal tubercle on abdominal segment VII Q gonapophyses. Scale bars: 0.10 mm. (D, J, Q from HL_zld20171111_7_A; B, H, M from HL_zld20171111_7_B; L from HL_zld20171111_7_C; A, E, G, I, K, N, O, P from HL_zld20171111_7_D; B from HL_zld20171111_7_G; F from HL_zld20171111_7_H.).