Fig. 9

Dorsal view of fourth-instar nymphs. Head, thorax, and abdomen. a, d, g: R. marabaensis; b, e, h: R. prolixus; c, f, i: R. robustus; ne neck, ju mandibular plate, ge maxillary plate, cl clypeus, ao anteocular distance, po postocular distance, mt metanotum, ms mesonotum, pr pronotum, I–X abdominal segments