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Table 3 Mean and standard deviation of the parameters of the three species of Rhodnius

From: Immature instars of three species of Rhodnius Stål, 1859 (Hemiptera, Reduviidae, Triatominae): morphology, morphometry, and taxonomic implications

Instars Species Characters
   TL HL XL AL IO AO PO
  R. marabaensis 2.55 ± 0.08A 0.87 ± 0.02A 0.38 ± 0.01A 1.17 ± 0.07A 0.30 ± 0.01A 0.52 ± 0.02A 0.22 ± 0.02A
First R. prolixus 2.66 ± 0.14AB 0.89 ± 0.03AB 0.37 ± 0.02A 1.29 ± 0.10B 0.29 ± 0.02A 0.55 ± 0.03B 0.21 ± 0.01B
  R. robustus 2.51 ± 0.15AC 0.85 ± 0.02AC 0.56 ± 0.02A 1.09 ± 0.11A 0.29 ± 0.03A 0.49 ± 0.03A 0.23 ± 0.02A
  R. marabaensis 4.49 ± 0.38A 1.24 ± 0.03A 0.65 ± 0.03A 2.22 ± 0.14A 0.36 ± 0.01A 0.81 ± 0.02A 0.26 ± 0.02A
Second R. prolixus 4.56 ± 0.33AB 1.27 ± 0.04AB 0.68 ± 0.04AB 2.42 ± 0.19B 0.37 ± 0.02A 0.83 ± 0.03AB 0.26 ± 0.01A
  R. robustus 4.22 ± 0.36AC 1.20 ± 0.07AC 0.63 ± 0.05AC 2.11 ± 0.22A 0.34 ± 0.02B 0.78 ± 0.06AC 0.25 ± 0.02A
  R. marabaensis 6.53 ± 0.30A 1.77 ± 0.07A 0.96 ± 0.05A 3.21 ± 0.20A 0.43 ± 0.03A 1.13 ± 0.05A 0.37 ± 0.02A
Third R. prolixus 6.63 ± 0.26AC 1.62 ± 0.05B 0.99 ± 0.04AC 3.45 ± 0.34A 0.45 ± 0.02AC 1.16 ± 0.03A 0.33 ± 0.02B
  R. robustus 6.84 ± 0.39B 1.81 ± 0.09A 1.02 ± 0.06BC 3.44 ± 0.19A 0.46 ± 0.02BC 1.16 ± 0.06A 0.33 ± 0.02B
  R. marabaensis 10.19 ± 0.46A 2.74 ± 0.16A 1.78 ± 0.12A 5.13 ± 0.34A 0.63 ± 0.03A 1.94 ± 0.12A 0.51 ± 0.03A
Fourth R. prolixus 10.51 ± 0.40A 2.60 ± 0.09BC 1.78 ± 0.08A 5.31 ± 0.28A 0.65 ± 0.02A 1.84 ± 0.06B 0.47 ± 0.02B
  R. robustus 10.57 ± 0.54A 2.69 ± 0.12AC 1.83 ± 0.08A 5.31 ± 0.44A 0.65 ± 0.03A 1.93 ± 0.08A 0.49 ± 0.02C
  R. marabaensis 13.63 ± 0.50A 3.88 ± 0.19A 2.95 ± 0.15A 7.34 ± 0.40A 0.82 ± 0.04A 2.72 ± 0.12A 0.67 ± 0.05A
Fifth R. prolixus 13.33 ± 0.40A 3.57 ± 0.16B 2.86 ± 0.13AB 7.31 ± 0.39A 0.82 ± 0.03AC 2.48 ± 0.11B 0.59 ± 0.02B
  R. robustus 13.39 ± 0.70A 3.94 ± 0.19A 3.01 ± 0.16AC 7.39 ± 0.49A 0.86 ± 0.03BC 2.73 ± 0.14A 0.65 ± 0.02A
  1. Means with different superscripts at each site are significantly different from each other (one-way ANOVA followed by a Tukey test). In bold, we present statistically significant measurements for all three comparisons in Tukey’s pairwise test for differentiation of the species. Mean in millimeters
  2. TL total length, HL head length, XL thorax length, AL abdomen length, IO interocular distance, AO anteocular distance, PO postocular distance