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. 2016 Sep 1;16(1):176. doi: 10.1186/s12862-016-0747-4

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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. 7 — Female oviscapt valves are asymmetrically twisted during copulation and symmetric in resting position. a Genitalia of a D. pachea female in resting position. b Genitalia of a D. pachea female at 10 min after the start of copulation, with the male removed, in ventral view; c in left lateral view and d in right lateral view. Note the impressions left by the male’s epandrial lobes, lateral of the oviscapt, in panels b–d (arrows). Abbreviations: es, eversible sheath (intersegmental membrane between 7th sternite and oviscapt valves); ovv, oviscapt valves; S7, 7th sternite; T7, 7th tergite; vu, vulva. Scale bar is 100 μm