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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Samara Journal of Science</journal-id><journal-title-group><journal-title xml:lang="en">Samara Journal of Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Самарский научный вестник</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2309-4370</issn><issn publication-format="electronic">2782-3016</issn><publisher><publisher-name xml:lang="en">Samara State University of Social Sciences and Education</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">34546</article-id><article-id pub-id-type="doi">10.17816/snv202091117</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>General Biology</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Общая биология</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Legs morphometric characters of the <italic>Dolichopus</italic> Latreille species, 1796 (Diptera, Dolichopodidae)</article-title><trans-title-group xml:lang="ru"><trans-title>Морфометрические признаки ног видов рода <italic>Dolichopus</italic> Latreille, 1796 (Diptera, Dolichopodidae)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chursina</surname><given-names>Mariya Alexandrovna</given-names></name><name xml:lang="ru"><surname>Чурсина</surname><given-names>Мария Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>candidate of biological sciences, senior lecturer of Biology of Plants and Animals Department</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, старший преподаватель кафедры биологии растений и животных</p></bio><email>chursina.1988@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Negrobov</surname><given-names>Oleg Pavlovich</given-names></name><name xml:lang="ru"><surname>Негробов</surname><given-names>Олег Павлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>doctor of biological sciences, professor of Ecology and Systematics of Invertebrate Animals Department</p></bio><bio xml:lang="ru"><p>доктор биологических наук, профессор кафедры экологии и систематики беспозвоночных животных</p></bio><email>negrobov@list.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Voronezh State Pedagogical University</institution></aff><aff><institution xml:lang="ru">Воронежский государственный педагогический университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Voronezh State University</institution></aff><aff><institution xml:lang="ru">Воронежский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-02-28" publication-format="electronic"><day>28</day><month>02</month><year>2020</year></pub-date><volume>9</volume><issue>1</issue><issue-title xml:lang="en">VOL 9, NO1 (2020)</issue-title><issue-title xml:lang="ru">2020. Т. 9, №1(30)</issue-title><fpage>106</fpage><lpage>112</lpage><history><date date-type="received" iso-8601-date="2020-06-03"><day>03</day><month>06</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Chursina M.A., Negrobov O.P.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, Чурсина М.А., Негробов О.П.</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Chursina M.A., Negrobov O.P.</copyright-holder><copyright-holder xml:lang="ru">Чурсина М.А., Негробов О.П.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://snv63.ru/2309-4370/article/view/34546">https://snv63.ru/2309-4370/article/view/34546</self-uri><abstract xml:lang="en"><p>A comparative analysis of 30 species of the Dolichopodidae family in a phylogenetic context was conducted to examine interspecific variation in the legs morphometry. Five relative traits of legs from 12 and seven absolute traits from nine showed significant phylogenetic signal. A set of traits, such as relatively short hind tibia and relatively long fore and middle tibia and the first segments of the hind legs allowed to allocate <italic>Dolichopus</italic> species from the other ones. The projection of the phylogenetic tree of <italic>Dolichopus</italic> species into the morphospace allowed us to divide it into four individual areas: not closely related species, but species having similar modifications of males’ legs tended to cluster. This suggests that the legs morphometric traits should be mainly under pressure of sexual selection. It has also been revealed that the elongation of the first segment of hind tarsi in <italic>Dolichopus</italic> species is associated with the distal displacement of the insertion point of <italic>dm-m</italic> with <italic>M<sub>4</sub></italic> and the decrease of the length of <italic>R<sub>4+5</sub></italic> . The functional significance of these characters set is discussed.</p></abstract><trans-abstract xml:lang="ru"><p>Для оценки межвидовой изменчивости морфометрических признаков ног был проведён сравнительный анализ 30 видов из семейства Dolichopodidae с учётом их филогении. Пять из двенадцати относительных признаков ног и семь из девяти абсолютных продемонстрировали статистически значимый филогенетический сигнал. Был выделен комплекс признаков, который позволяет отделить виды <italic>Dolichopus</italic> от видов внешней группы: это относительно короткие задние голени и относительно длинные передние и средние голени, а также удлинённый первый членик задней лапки. Проекция филогенетического дерева видов <italic>Dolichopus</italic> на морфопространство позволила разделить его на четыре области: были кластеризованы не близкородственные виды, а виды, имеющие сходные модификации ног самцов. Это говорит о том, что морфометрические признаки ног в основном находятся под давлением полового отбора. Также было выявлено, что удлинение первого сегмента задних лапок у видов <italic>Dolichopus</italic> связано с дистальным смещением точки слияния <italic>dm-m</italic> с <italic>M<sub>4</sub></italic> и уменьшением длины <italic>R<sub>4+5</sub></italic> . Обсуждается функциональное значение этого сочетания признаков.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Diptera</kwd><kwd>Dolichopodidae</kwd><kwd>Dolichopus</kwd><kwd>legs morphometry</kwd><kwd>ornaments</kwd><kwd>phylogenetic signal</kwd><kwd>morphometric characters</kwd><kwd>morphological characters</kwd><kwd>femora</kwd><kwd>tibia</kwd><kwd>tarsi</kwd><kwd>sexual dimorphism</kwd><kwd>wing shape</kwd><kwd>modification of legs</kwd><kwd>modification of tibia</kwd><kwd>modification of tarsi</kwd><kwd>COI gene</kwd><kwd>phylogeny</kwd><kwd>phylogenetic tree</kwd><kwd>Diptera</kwd><kwd>Dolichopodidae</kwd><kwd>Dolichopus</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>морфометрия ног</kwd><kwd>украшения</kwd><kwd>филогенетический сигнал</kwd><kwd>морфометрические признаки</kwd><kwd>морфологические признаки</kwd><kwd>бёдра</kwd><kwd>голени</kwd><kwd>лапки</kwd><kwd>половой диморфизм</kwd><kwd>форма крыла</kwd><kwd>модификации ног</kwd><kwd>модификации голеней</kwd><kwd>модификации лапок</kwd><kwd>COI ген</kwd><kwd>филогения</kwd><kwd>филогенетическое дерево</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This article is published with the support of a grant from the Russian Foundation for Basic Research and the NSFC under Research Project No. 20-54-53005.</funding-statement><funding-statement xml:lang="ru">Статья публикуется при поддержке гранта РФФИ и NSFC в соответствии с исследовательским проектом № 20-54-53005.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Васильев А.Г., Васильева А.И., Шкурихин А.О. 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