Hainanthereua albilineata sp. nov., paratype. A Frontal view of hypopharynx, the labels *B, *D, and *E indicate the corresponding positions shown in panels B, D, and E respectively, and the proximal and distal orientations are also marked; B detail of A, proximal part of the hypopharynx, mouth and area between the median excavation and the converging flattened bars of the proximal fork; C detail of B, showing sensilla; D detail of A, flattened bristles of proximal part of excavation; E distal end of hypopharynx, showing flattened bristles and sensilla, the labels *F and *G indicate the corresponding positions shown in panels F and G; F detail of E, showing nipple-shaped sensilla; G detail of E, showing pectinate bristles on distal portion.