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

Lázari Cacini, Gustavo; de Oliveira, Jader; Belintani, Tiago; dos Santos Souza, Éder; Olaia, Nicoly; Pinto, Mara Cristina; da Rosa, João Aristeu

doi:10.1186/s13071-022-05200-2

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 ± 0.08^A	0.87 ± 0.02^A	0.38 ± 0.01^A	1.17 ± 0.07^A	0.30 ± 0.01^A	0.52 ± 0.02^A	0.22 ± 0.02^A
First	R. prolixus	2.66 ± 0.14^AB	0.89 ± 0.03^AB	0.37 ± 0.02^A	1.29 ± 0.10^B	0.29 ± 0.02^A	0.55 ± 0.03^B	0.21 ± 0.01^B
	R. robustus	2.51 ± 0.15^AC	0.85 ± 0.02^AC	0.56 ± 0.02^A	1.09 ± 0.11^A	0.29 ± 0.03^A	0.49 ± 0.03^A	0.23 ± 0.02^A
	R. marabaensis	4.49 ± 0.38^A	1.24 ± 0.03^A	0.65 ± 0.03^A	2.22 ± 0.14^A	0.36 ± 0.01^A	0.81 ± 0.02^A	0.26 ± 0.02^A
Second	R. prolixus	4.56 ± 0.33^AB	1.27 ± 0.04^AB	0.68 ± 0.04^AB	2.42 ± 0.19^B	0.37 ± 0.02^A	0.83 ± 0.03^AB	0.26 ± 0.01^A
	R. robustus	4.22 ± 0.36^AC	1.20 ± 0.07^AC	0.63 ± 0.05^AC	2.11 ± 0.22^A	0.34 ± 0.02^B	0.78 ± 0.06^AC	0.25 ± 0.02^A
	R. marabaensis	6.53 ± 0.30^A	1.77 ± 0.07^A	0.96 ± 0.05^A	3.21 ± 0.20^A	0.43 ± 0.03^A	1.13 ± 0.05^A	0.37 ± 0.02^A
Third	R. prolixus	6.63 ± 0.26^AC	1.62 ± 0.05^B	0.99 ± 0.04^AC	3.45 ± 0.34^A	0.45 ± 0.02^AC	1.16 ± 0.03^A	0.33 ± 0.02^B
	R. robustus	6.84 ± 0.39^B	1.81 ± 0.09^A	1.02 ± 0.06^BC	3.44 ± 0.19^A	0.46 ± 0.02^BC	1.16 ± 0.06^A	0.33 ± 0.02^B
	R. marabaensis	10.19 ± 0.46^A	2.74 ± 0.16^A	1.78 ± 0.12^A	5.13 ± 0.34^A	0.63 ± 0.03^A	1.94 ± 0.12^A	0.51 ± 0.03^A
Fourth	R. prolixus	10.51 ± 0.40^A	2.60 ± 0.09^BC	1.78 ± 0.08^A	5.31 ± 0.28^A	0.65 ± 0.02^A	1.84 ± 0.06^B	0.47 ± 0.02^B
	R. robustus	10.57 ± 0.54^A	2.69 ± 0.12^AC	1.83 ± 0.08^A	5.31 ± 0.44^A	0.65 ± 0.03^A	1.93 ± 0.08^A	0.49 ± 0.02^C
	R. marabaensis	13.63 ± 0.50^A	3.88 ± 0.19^A	2.95 ± 0.15^A	7.34 ± 0.40^A	0.82 ± 0.04^A	2.72 ± 0.12^A	0.67 ± 0.05^A
Fifth	R. prolixus	13.33 ± 0.40^A	3.57 ± 0.16^B	2.86 ± 0.13^AB	7.31 ± 0.39^A	0.82 ± 0.03^AC	2.48 ± 0.11^B	0.59 ± 0.02^B
	R. robustus	13.39 ± 0.70^A	3.94 ± 0.19^A	3.01 ± 0.16^AC	7.39 ± 0.49^A	0.86 ± 0.03^BC	2.73 ± 0.14^A	0.65 ± 0.02^A

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
TL total length, HL head length, XL thorax length, AL abdomen length, IO interocular distance, AO anteocular distance, PO postocular distance

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ISSN: 1756-3305

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