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. 2016 Sep 21;9:511. doi: 10.1186/s13071-016-1796-7

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© The Author(s). 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 8 — Principal components analysis (PCA) of the body and setal measurements of the larvae of Ornithodoros rietcorreai n. sp., Ornithodoros guaporensis, Ornithodoros rioplatensis and Ornithodoros talaje, using the features detailed in Table 4. Morphometric variables for the larvae of O. guaporensis, O. rioplatensis and O. talaje were retrieved from Nava et al. [17]. Each point represents the position of a measured specimen in the reduced morphometric space. a Analysis including O. rietcorreai purebred larvae from homologous crosses of Paraiba (PB) and of Piauí (PI). b Analysis including O. rietcorreai purebred larvae from homologous crosses of Paraíba (PB) and Piauí (PI), and hybrid larvae from heterologous crosses (♂PB × ♀PI; ♂PI × ♀PB)