Fig. 4From: Immature instars of three species of Rhodnius Stål, 1859 (Hemiptera, Reduviidae, Triatominae): morphology, morphometry, and taxonomic implicationsFourth-instar nymphs. R. marabaensis: a dorsal view, b ventral view; R. prolixus: c dorsal view, d ventral view; R. robustus: e dorsal view, f ventral viewBack to article page