Hainanthereua albilineata sp. nov., paratypes. A Internal view of epipharynx, the labels *B–*G indicate the corresponding positions shown in panels B–G, and the lateral orientation is marked; B detail of A, distal part of the epipharynx, distal cluster of sensilla of the medial labral part; C lateral (left) part of the epipharynx, labral bristles, present on both sides; D detail of A, proximal part of the epipharynx, proximal cluster of sensilla of the medial labral part; E detail of A, field of branching spines on clypeal part of epipharynx; F detail of E, showing the chevron-shaped spine row; G sensilla proximal to dense field of branching spines on clypeal triangle, corresponding to the proximal part of the structure shown in panel E; H detail of A, sensilla on lateral (right) part of epipharynx, present on both sides, situated within a depression.