{"status":"ok","message-type":"work-list","message-version":"1.0.0","message":{"facets":{},"total-results":14,"items":[{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T13:53:20Z","timestamp":1791554000772,"version":"4.3.4"},"reference-count":4,"publisher":"Zoological Institute of the Russian Academy of Sciences","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Zoosystematica Rossica"],"published-print":{"date-parts":[[2020,4,14]]},"abstract":"<jats:p>Petrobiellus sachalinensis sp. nov. from the northwest of Sakhalin Island (Russia) is described and illustrated. It is compared with the three other known species of the genus, P. takunagae Silvestri, 1943 from Honshu Island (Japan), P. curvistylis Uchida, 1954 from Hachijo-jima Island (Japan), and P. kusakini Kaplin, 1980 from Simushir Island (Russia). The new species can be distinguished from the congeners by the colour of body and scales, by distribution of pigment, by colour and shape of paired ocelli, and by structure of compound eyes, maxillary palps, legs, urites, and ovipositor.<\/jats:p>","DOI":"10.31610\/zsr\/2020.29.1.17","type":"journal-article","created":{"date-parts":[[2020,4,14]],"date-time":"2020-04-14T14:56:34Z","timestamp":1586876194000},"page":"17-22","source":"Crossref","is-referenced-by-count":6,"title":["A new species of bristletails of the genus Petrobiellus (Microcoryphia: Machilidae) from Sakhalin"],"prefix":"10.31610","volume":"29","author":[{"given":"V.G.","family":"Kaplin","sequence":"first","affiliation":[{"name":"All-Russian Institute of Plant Protection, 3 Podbelskogo Str., St Petersburg\u2013Pushkin 196608, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"14981","published-online":{"date-parts":[[2020,4,14]]},"reference":[{"key":"ref0","unstructured":"Kaplin V.G. 1980. New species of bristletails (Microcoryphia, Machilidae) from the Kuril Islands and Primorsky Krai. In: Lehr P.A. (Ed.). Taksonomiya nasekomykh Dal\u2019nego Vostoka [Taxonomy of insects of the Far East]: 3\u20139. Vladivostok. (In Russian)."},{"key":"ref1","doi-asserted-by":"publisher","unstructured":"Ma Y., He K., Yu P., Yu D., Cheng X. & Zhang J.Y. 2015. The complete mitochondrial genomes of three bristletails (Insecta: Archaeognatha): the paraphyly of Machilidae and insights into Archaeognathan phylogeny. PLoS One, 10(1): 1\u201319. https:\/\/doi.org\/10.1371\/journal.pone.0117669","DOI":"10.1371\/journal.pone.0117669"},{"key":"ref2","unstructured":"Silvestri F. 1943. Contributto alla conoscenza dei Machilidae (Insecta, Thysanura) del Giappone. Bollettino del Laboratorio di Zoologia, generale e agraria della R. Scuola superiore d\u2019Agricoltura in Portici, 32: 283\u2013306."},{"key":"ref3","unstructured":"Uchida H. 1954. Apterygota of the Hachijo-Jima and its adjacent islands. Science Reports of the Faculty of Literature and Science, Hirosaki University, 1(1): 1\u201317."}],"container-title":["Zoosystematica Rossica"],"language":"en","deposited":{"date-parts":[[2020,4,14]],"date-time":"2020-04-14T14:56:40Z","timestamp":1586876200000},"score":14.110231,"resource":{"primary":{"URL":"https:\/\/www.zin.ru\/journals\/zsr\/publication.asp?id=1356"}},"issued":{"date-parts":[[2020,4,14]]},"references-count":4,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2020]]},"published-print":{"date-parts":[[2020]]}},"URL":"https:\/\/doi.org\/10.31610\/zsr\/2020.29.1.17","ISSN":["2410-0226","0320-9180"],"issn-type":[{"value":"2410-0226","type":"electronic"},{"value":"0320-9180","type":"print"}],"published":{"date-parts":[[2020,4,14]]}},{"indexed":{"date-parts":[[2025,6,5]],"date-time":"2025-06-05T04:01:20Z","timestamp":1749096080125,"version":"3.41.0"},"reference-count":0,"publisher":"Federal Scientific Center of the East Asia Terrestrial Biodiversity, FEB RAS","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Far East. entomol."],"published-print":{"date-parts":[[2025,6,4]]},"abstract":"<jats:p>A new species Petrobiellus iturupiensis Kaplin, sp. n. is described from the\ncoast of Iturup Island. Among the described congeners, this new species is most similar to P.\ntakunagae Silvestri, 1943 but differs from latter in the structure of the eyes, ocelli, maxillary\npalps, urosternites and urocoxites, posterior angle of urosternites, and number of divisions in\nmale parameres.<\/jats:p>","DOI":"10.25221\/fee.523.3","type":"journal-article","created":{"date-parts":[[2025,6,4]],"date-time":"2025-06-04T03:11:35Z","timestamp":1749006695000},"page":"14-24","source":"Crossref","is-referenced-by-count":0,"title":["A NEW SPECIES OF THE BRISTLETAIL GENUS PETROBIELLUS SILVESTRI, 1943 (MICROCORYPHIA: MACHILIDAE, PETROBIELLINAE) FROM KURIL ISLANDS"],"prefix":"10.25221","volume":"523","author":[{"name":"All-Russian Institute of Plant Protection, St. Petersburg, Pushkin, 196608, Russia","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"V. G.","family":"Kaplin","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10855","published-online":{"date-parts":[[2025,6,4]]},"container-title":["Far Eastern entomologist"],"deposited":{"date-parts":[[2025,6,4]],"date-time":"2025-06-04T03:11:36Z","timestamp":1749006696000},"score":13.238586,"resource":{"primary":{"URL":"https:\/\/www.biosoil.ru\/FEE\/Publication\/2800"}},"issued":{"date-parts":[[2025,6,4]]},"references-count":0,"URL":"https:\/\/doi.org\/10.25221\/fee.523.3","ISSN":["1026-051X","2713-2196"],"issn-type":[{"value":"1026-051X","type":"print"},{"value":"2713-2196","type":"electronic"}],"published":{"date-parts":[[2025,6,4]]}},{"indexed":{"date-parts":[[2026,3,28]],"date-time":"2026-03-28T05:04:55Z","timestamp":1774674295188,"version":"3.50.1"},"reference-count":57,"publisher":"Pensoft Publishers","license":[{"start":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T00:00:00Z","timestamp":1765324800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ASP"],"abstract":"<jats:p>\n                    We examined the morphology of the male and female genitalic regions of\n                    <jats:italic>Petrobiellus akkesiensis<\/jats:italic>\n                    and describe its mating behavior as analyzed using video recordings.\n                    <jats:italic>Petrobiellus<\/jats:italic>\n                    belongs to the monogeneric subfamily Petrobiellinae (Machilidae), an enigmatic group known only from the Far East. Its male genitalic region shows remarkable specialization, leading to the inference that\n                    <jats:italic>Petrobiellus<\/jats:italic>\n                    performs direct spermatophore transfer through genital coupling. Video analysis revealed that, as expected, the male holds the female\u2019s ovipositor using both his penis and styli on the 9\n                    <jats:sup>th<\/jats:sup>\n                    abdominal segment: the penis grasps the basal region of the ovipositor with its hook-like tip and the styli hold the midsection of the ovipositor from above and below; the spermatophore is then discharged onto the dorsal side of the basal region of the ovipositor from the apex of the penis, and the sperm is taken into the ovipositor, thereby completing the direct sperm transfer from male to female. This is the first documented case of direct sperm (spermatophore) transfer via genital coupling in apterygote hexapods. Based on current and previous findings, we compared and characterized the mating behaviors of Archaeognatha and discuss their implications in terms of evolution of mating strategies in Hexapoda. The mating behavior of\n                    <jats:italic>Petrobiellus<\/jats:italic>\n                    represents one of the most derived modes within Machilidae and Archaeognatha, for which we propose the name \u201cdirect transfer of spermatophore by genital coupling\u201d.\n                  <\/jats:p>","DOI":"10.3897\/asp.83.e159694","type":"journal-article","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"page":"737-756","source":"Crossref","is-referenced-by-count":1,"title":["Mating behavior of the jumping bristletail Petrobiellus akkesiensis (Archaeognatha: Machilidae: Petrobiellinae): Direct spermatophore transfer via genital coupling"],"prefix":"10.3897","volume":"83","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0092-5823","authenticated-orcid":true,"given":"Shodo","family":"Mtow","sequence":"first","affiliation":[{"name":"Fukushima University, Fukushima, Japan"},{"name":"Meijo University, Nagoya, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3900-3412","authenticated-orcid":true,"given":"Ryuichiro","family":"Machida","sequence":"additional","affiliation":[{"name":"University of Tsukuba, Nagano, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2258","published-online":{"date-parts":[[2025,12,10]]},"reference":[{"issue":"1","key":"159694_B1","first-page":"31","article-title":"Description of a new genus and a new species of Machilidae (Insecta: Microcoryphia) from Turkey.","volume":"85","author":"Bach De Roca","year":"2013","journal-title":"Soil Organisms"},{"key":"159694_B2","first-page":"3755","article-title":"Le spermatophore de Lepidocampa (Diploures Campod\u00e9id\u00e9s).","volume":"260","author":"Bareth","year":"1965","journal-title":"Comptes Rendus de l\u2019Acad\u00e9mie des Sciences"},{"key":"159694_B3","first-page":"1","article-title":"El\u00e9ments pour une monographie des Collemboles 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of the Bugs: Evolution and the Rise of Insects."},{"key":"159694_B39","first-page":"283","article-title":"Contributo alla conoscenza dei Machilidae (Insecta, Thysanura) del Giappone. Bollettino del Laboratorio di Zoologia, generale e agraria della R.","volume":"32","author":"Silvestri","year":"1943","journal-title":"Scuola superiore d\u2019Agricoltura in Portici"},{"issue":"3","key":"159694_B40","doi-asserted-by":"crossref","first-page":"337","DOI":"10.1111\/j.1439-0310.1955.tb01532.x","article-title":"Beitr\u00e4ge zur Ethologie einiger mitteldeutscher Machiliden.","volume":"12","author":"Sturm","year":"1955","journal-title":"Zeitschrift f\u00fcr Tierpsychologie"},{"issue":"1","key":"159694_B41","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1111\/j.1439-0310.1956.tb01542.x","article-title":"Die Paarung beim Silberfischchen Lepisma saccharina.","volume":"13","author":"Sturm","year":"1956","journal-title":"Zeitschrift f\u00fcr Tierpsychologie"},{"key":"159694_B42","author":"Sturm","year":"1978"},{"issue":"3","key":"159694_B43","first-page":"507","article-title":"Aspekte des Paarungsverhaltens bei den Machiloidea (Archaeognatha, Insecta).","volume":"2","author":"Sturm","year":"1986","journal-title":"Braunschweiger Naturkundliche Schriften"},{"issue":"4","key":"159694_B44","first-page":"693","article-title":"Das Paarungsverhalten von Thermobia domestica (Packard) (Lepismatidae, Zygentoma, Insecta).","volume":"2","author":"Sturm","year":"1987","journal-title":"Braunschweiger Naturkundliche Schriften"},{"issue":"2","key":"159694_B45","first-page":"53","article-title":"Three genera of Machilidae from North America and Mexico: Leptomachilis, Meximachilis and Mesomachilis, with description of two new sense organs in Nesomachilis males (Insecta, Archaeognatha).","volume":"17","author":"Sturm","year":"1991","journal-title":"Steenstrupia"},{"key":"159694_B46","first-page":"60","article-title":"Mating behavior and sexual dimorphism in Promesomachilis hispanica Silvestri, 1923 (Machilidae, Archaeognatha, Insecta).","volume":"228","author":"Sturm","year":"1992","journal-title":"Zoologischer Anzeiger"},{"key":"159694_B47","first-page":"17","article-title":"Zum Paarungsverhalten von Tricholepidion gertschi Wygod., 1961, einer rezenten Art der Familie Lepidotrichidae (Zygentoma, Insecta).","volume":"1995","author":"Sturm","year":"1996","journal-title":"Verhandlungen des Westdeutschen Entomologentag D\u00fcsseldorf"},{"key":"159694_B48","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1016\/S0031-4056(24)02972-X","article-title":"The mating behavior of Tricholepidion gertschi Wygod., 1961 (Lepidotrichidae, Zygentoma) and its comparison with the behavior of other \u201cApterygota\u201d.","volume":"41","author":"Sturm","year":"1997","journal-title":"Pedobiologia"},{"issue":"4","key":"159694_B49","first-page":"447","article-title":"Zur Entwicklung und zum Paarungsverhalten zentralamazonischer Meinertelliden (Machiloidea, Archaeognatha, Insecta).","volume":"8","author":"Sturm","year":"1984","journal-title":"Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas"},{"key":"159694_B50","doi-asserted-by":"publisher","DOI":"10.1127\/entom.gen\/18\/1993\/55"},{"key":"159694_B51","author":"Sturm","year":"2001","journal-title":"Archaeognatha. 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Uchida","year":"1954","unstructured":"Uchida, H., Apterygota of the Hachijo-Jima and its adjacent islands, Science Reports of the Faculty of Literature and Science, \n               Hirosaki University, 1954, vol. 1, no. 1, pp. 1\u201317.","journal-title":"Hirosaki University"}],"container-title":["Biology Bulletin"],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1134\/S1062359025701031.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1134\/S1062359025701031","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1134\/S1062359025701031.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T00:57:52Z","timestamp":1773622672000},"score":12.499258,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1134\/S1062359025701031"}},"issued":{"date-parts":[[2025,12]]},"references-count":4,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2025,12]]}},"alternative-id":["10486"],"URL":"https:\/\/doi.org\/10.1134\/s1062359025701031","ISSN":["1062-3590","1608-3059"],"issn-type":[{"value":"1062-3590","type":"print"},{"value":"1608-3059","type":"electronic"}],"published":{"date-parts":[[2025,12]]},"assertion":[{"value":"22 November 2024","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"17 January 2025","order":2,"name":"revised","label":"Revised","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"18 January 2025","order":3,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"11 March 2026","order":4,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"This work does not contain any studies involving human and animal subjects.","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"ETHICS APPROVAL AND CONSENT TO PARTICIPATE"}},{"value":"The author of this work declares that he has no conflicts of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"CONFLICT OF INTEREST"}}],"article-number":"399"},{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T07:13:06Z","timestamp":1768806786349,"version":"3.49.0"},"reference-count":0,"publisher":"Akademizdatcenter Nauka","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"published-print":{"date-parts":[[2025]]},"abstract":"<jats:p>The small East Asian genus Petrobiellus Silvestri, 1943 has so far included three species: P. takunagae Silvestri, 1943 (Japan), P. sachalinensis Kaplin, 2020 (Sakhalin), and P. kusakini Kaplin, 1980 (Simushir Island, Kuril Islands). Two new species are added herewith: P. nematocerus sp. n. (Furugelm Island, Sea of Japan) and P. leleji sp. n. (Atlasov Island, Kuril Islands). Among them, the former new species seems to be particularly similar to P. sachalinensis, vs the latter new species which seems most similar to P. takunagae, the type species of the genus. Petrobiellus nematocerus sp. n. differs from P. sachalinensis in the color of the scales on the dorsal side of the body; the length ratio of the antennae to the body; the color of the paired ocelli and the distance between them relative to the total width of the compound eyes; the number of dentate setae on the dorsal side of the apical and pre-apical articles of the maxillary palps; the number of needle-shaped supporting setae on the 2nd article of the tarsi and tibiae; and the size of the apical angle of the abdominal sternites. Petrobiellus leleji sp. n. and P. takunagae differ in the distance between the paired ocelli relative to the total width of the eyes; the width to length ratio of the paired ocellus; the lengths of the last and penultimate articles of the maxillary palps, abdominal sternites and coxites, as well as the apical angle of the abdominal sternites and the number of articles in the parameres of the male.<\/jats:p>","DOI":"10.7868\/s3034545625050044","type":"journal-article","created":{"date-parts":[[2025,11,14]],"date-time":"2025-11-14T12:36:11Z","timestamp":1763123771000},"page":"35","source":"Crossref","is-referenced-by-count":0,"title":["TWO NEW SPECIES OF THE BRISTLETAIL GENUS PETROBIELLUS SILVESTRI, 1943 (MICROCORYPHIA, MACHILIDAE, PETROBIELLINAE) FROM THE RUSSIAN FAR EAST"],"prefix":"10.7868","volume":"104","author":[{"given":"V. G.","family":"Kaplin","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"4687","container-title":["\u0417\u043e\u043e\u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0436\u0443\u0440\u043d\u0430\u043b \/ Russian Journal of Zoology"],"language":"en","deposited":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T17:41:45Z","timestamp":1768758105000},"score":12.463472,"resource":{"primary":{"URL":"https:\/\/zoojournras.ru\/s30345456s0044513425050044-1\/?version_id=121622"}},"issued":{"date-parts":[[2025]]},"references-count":0,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2025]]}},"alternative-id":["1"],"URL":"https:\/\/doi.org\/10.7868\/s3034545625050044","ISSN":["3034-5456"],"issn-type":[{"value":"3034-5456","type":"print"}],"published":{"date-parts":[[2025]]}},{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T11:44:26Z","timestamp":1787226266795,"version":"build-2736575974"},"reference-count":55,"publisher":"Elsevier BV","issue":"6","license":[{"start":{"date-parts":[[2012,11,1]],"date-time":"2012-11-01T00:00:00Z","timestamp":1351728000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthropod Structure &amp; Development"],"published-print":{"date-parts":[[2012,11]]},"DOI":"10.1016\/j.asd.2012.06.003","type":"journal-article","created":{"date-parts":[[2012,7,2]],"date-time":"2012-07-02T09:49:21Z","timestamp":1341222561000},"page":"575-591","source":"Crossref","is-referenced-by-count":22,"title":["The exoskeleton of the female genitalic region in Petrobiellus takunagae (Insecta: Archaeognatha): Insect-wide terminology, homologies, and functional interpretations"],"prefix":"10.1016","volume":"41","author":[{"given":"Klaus-Dieter","family":"Klass","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natalia A.","family":"Matushkina","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.asd.2012.06.003_bib1","doi-asserted-by":"crossref","first-page":"3","DOI":"10.3897\/asp.64.e31640","article-title":"A\u00a0revised interpretation of the evolution of attachment structures in Hexapoda with special emphasis on Mantophasmatodea","volume":"64","author":"Beutel","year":"2006","journal-title":"Arthropod Systematics and Phylogeny"},{"key":"10.1016\/j.asd.2012.06.003_bib2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1163\/187631274X00010","article-title":"On the abdominal morphology of Thysanura (Archaeognatha and Thysanura s.str.)","volume":"6","author":"Birket-Smith","year":"1974","journal-title":"Entomologica Scandinavica Supplementum"},{"key":"10.1016\/j.asd.2012.06.003_bib3","first-page":"173","article-title":"Morphologie abdominale des machilides (Insecta Thysanura) \u2013 I. 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The ovipositor is held at the three points (arrows) by the male, with the penis and the styli IX of both sides. See the text for details. Numerals indicate the abdominal segment number to which each structure belongs. \u2014 Abbreviations: Ce \u2013 cercus; CF \u2013 caudal filament; S6\u20138 \u2013 sternites VI to VIII; T7\u201310 \u2013 terga VII to X.","reference-count":0,"publisher":"Pensoft Publishers","content-domain":{"domain":[],"crossmark-restriction":false},"DOI":"10.3897\/asp.83.e159694.figure6","type":"component","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"source":"Crossref","is-referenced-by-count":0,"title":["Figure 6 from: Mtow S, Machida R (2025) Mating behavior of the jumping bristletail Petrobiellus akkesiensis (Hexapoda: Archaeognatha, Machilidae, Petrobiellinae): Direct spermatophore transfer via genital conjugation. Arthropod Systematics &amp;amp; Phylogeny 83: 737-756. https:\/\/doi.org\/10.3897\/asp.83.e159694"],"prefix":"10.3897","author":[{"given":"Shodo","family":"Mtow","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuichiro","family":"Machida","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2258","published-online":{"date-parts":[[2025,12,10]]},"deposited":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:47Z","timestamp":1765369307000},"score":7.686947,"resource":{"primary":{"URL":"https:\/\/arthropod-systematics.arphahub.com\/article\/159694\/element\/2\/17\/"}},"issued":{"date-parts":[[2025,12,10]]},"references-count":0,"URL":"https:\/\/doi.org\/10.3897\/asp.83.e159694.figure6","relation":{"is-component-of":[{"id-type":"doi","id":"10.3897\/asp.83.e159694","asserted-by":"object"}]},"published":{"date-parts":[[2025,12,10]]}},{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:36:14Z","timestamp":1772253374908,"version":"3.50.1"},"description":"Figure 2 SEM micrographs of genitalic segments in Petrobiellus akkesiensis male, anterior to the top. A Venter of the abdominal segments VIII and IX, ventral view. B Venter of the abdominal segment IX, dorsal view. C Enlargement of the stylus IX, dorsal view. D Enlargement of a strong spine on the dorsomesally-concaved side of the stylus IX. E Penis and parameres IX, lateral view, dorsal to the right. F Enlargement of the distal article of the penis, lateral view. G Enlargement of a short seta on the dorsal side of the distal article of the penis. H Setation on the distal part of the paramere IX, lateral view. \u2014 Abbreviations: Cx8, 9 \u2013 coxites VIII and IX; Pa9 \u2013 paramere IX; Pe \u2013 penis; St8, 9 \u2013 styli VIII and IX. \u2014 Symbols: asterisk \u2013 dorsomesally-concaved side of stylus IX; star \u2013 genital opening. \u2014 Scale bars: A \u2013 1 mm; B \u2013 500 \u00b5m; C, E \u2013 200 \u00b5m; F \u2013 50 \u00b5m; D, H \u2013 10 \u00b5m; G \u2013 2 \u00b5m.","reference-count":0,"publisher":"Pensoft Publishers","content-domain":{"domain":[],"crossmark-restriction":false},"DOI":"10.3897\/asp.83.e159694.figure2","type":"component","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"source":"Crossref","is-referenced-by-count":0,"title":["Figure 2 from: Mtow S, Machida R (2025) Mating behavior of the jumping bristletail Petrobiellus akkesiensis (Hexapoda: Archaeognatha, Machilidae, Petrobiellinae): Direct spermatophore transfer via genital conjugation. Arthropod Systematics &amp;amp; Phylogeny 83: 737-756. https:\/\/doi.org\/10.3897\/asp.83.e159694"],"prefix":"10.3897","author":[{"given":"Shodo","family":"Mtow","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuichiro","family":"Machida","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2258","published-online":{"date-parts":[[2025,12,10]]},"deposited":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:47Z","timestamp":1765369307000},"score":7.6827736,"resource":{"primary":{"URL":"https:\/\/arthropod-systematics.arphahub.com\/article\/159694\/element\/2\/12\/"}},"issued":{"date-parts":[[2025,12,10]]},"references-count":0,"URL":"https:\/\/doi.org\/10.3897\/asp.83.e159694.figure2","relation":{"is-component-of":[{"id-type":"doi","id":"10.3897\/asp.83.e159694","asserted-by":"object"}]},"published":{"date-parts":[[2025,12,10]]}},{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:35:29Z","timestamp":1772253329652,"version":"3.50.1"},"description":"Figure 4 Sequential frames of mating in Petrobiellus akkesiensis, Case VI in Table 1 (captured from File S3), viewed from the bottom. Counters indicate the time from the commencement of the experiment. Arrows indicate the outline of the spermatophores, to show their approximate dimension. A At 45 sec after the commencement of the experiment (ACE), while exploring the ovipositor with his penis, the male has already prepared the styli IX to hold the ovipositor, i.e., the stylus on the side closer to the partner (left in this frame) is bent forward, whereas the other stylus (right in this frame) is stretched backward. B At 1 min 15 sec ACE, the male protrudes his penis at a right angle and grasps the basal part of the ovipositor with the distally-curved penis. The male\u2019s ventral sacs in the abdominal segments VII and VI begin to swell. C At 1 min 50 sec ACE, the ventral sacs in the abdominal segments V to III also swell, and the spermatophore becomes visible. D At 6 min 59 sec ACE, the spermatophore has reached its maximum size and is clearly visible at the basal part of the ovipositor. E At 8 min 3 sec ACE, the male\u2019s ventral sacs begin to deflate. F At 8 min 42 sec ACE, all ventral sacs have deflated. G At 9 min 1 sec ACE, the spermatophore begins to diminish. H At 9 min 28 sec ACE, the male\u2019s styli IX release the ovipositor, but the penis still maintains its hold. I At 13 min 35 sec ACE, the spermatophore has diminished to its minimum size. \u2014 Abbreviations: An \u2013 antenna; Ce \u2013 cercus; CF \u2013 caudal filament; Cx6\u20139 \u2013 coxites VI to IX; Ov \u2013 ovipositor; Pa9 \u2013 paramere IX; Pe \u2013 penis; Sp \u2013 spermatophore; St6\u20139 \u2013 styli VI to IX; T7\u201310 \u2013 abdominal terga VII to X; VS3\u20137 \u2013 ventral sacs III to VII. \u2014 Scale bars: A \u2013 2 mm; B, C, E, H, I \u2013 1 mm; D, F, G \u2013 500 \u00b5m.","reference-count":0,"publisher":"Pensoft Publishers","content-domain":{"domain":[],"crossmark-restriction":false},"DOI":"10.3897\/asp.83.e159694.figure4","type":"component","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"source":"Crossref","is-referenced-by-count":0,"title":["Figure 4 from: Mtow S, Machida R (2025) Mating behavior of the jumping bristletail Petrobiellus akkesiensis (Hexapoda: Archaeognatha, Machilidae, Petrobiellinae): Direct spermatophore transfer via genital conjugation. Arthropod Systematics &amp;amp; Phylogeny 83: 737-756. https:\/\/doi.org\/10.3897\/asp.83.e159694"],"prefix":"10.3897","author":[{"given":"Shodo","family":"Mtow","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuichiro","family":"Machida","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2258","published-online":{"date-parts":[[2025,12,10]]},"deposited":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:47Z","timestamp":1765369307000},"score":7.6757717,"resource":{"primary":{"URL":"https:\/\/arthropod-systematics.arphahub.com\/article\/159694\/element\/2\/14\/"}},"issued":{"date-parts":[[2025,12,10]]},"references-count":0,"URL":"https:\/\/doi.org\/10.3897\/asp.83.e159694.figure4","relation":{"is-component-of":[{"id-type":"doi","id":"10.3897\/asp.83.e159694","asserted-by":"object"}]},"published":{"date-parts":[[2025,12,10]]}},{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:35:32Z","timestamp":1772253332137,"version":"3.50.1"},"description":"Figure 3 Mating behavior of Petrobiellus akkesiensis captured from movies, viewed from the top. Counters indicate the time from the commencement of the experiment, i.e., when a male and a female were placed in the experimental arena. A\u2013C Sequential frames of mating in Case I from Table 1 (captured from File S1). A At 8 sec after the commencement of the experiment (ACE), the male positions himself to the right of the female, placing his maxillary palps on her thorax. B At 2 min 9 sec ACE, the male grasps the basal part of the ovipositor with his penis. C At 12 min 45 sec ACE, even after the penis releases the ovipositor, the male continues to hold and vibrate the female for a short while. D A single frame from Case V in Table 1 (captured from File S2), at 46 sec ACE. Soon after ovipositor-holding is established, the male\u2019s ventral sacs begin to swell; a pair of ventral sacs in each of the abdominal segments VII and VI can be observed. \u2014 Abbreviations: MxP \u2013 maxillary palp; VS6, 7 \u2013 ventral sacs VI and VII. \u2014 Scale bars: 5 mm.","reference-count":0,"publisher":"Pensoft Publishers","content-domain":{"domain":[],"crossmark-restriction":false},"DOI":"10.3897\/asp.83.e159694.figure3","type":"component","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"source":"Crossref","is-referenced-by-count":0,"title":["Figure 3 from: Mtow S, Machida R (2025) Mating behavior of the jumping bristletail Petrobiellus akkesiensis (Hexapoda: Archaeognatha, Machilidae, Petrobiellinae): Direct spermatophore transfer via genital conjugation. Arthropod Systematics &amp;amp; Phylogeny 83: 737-756. https:\/\/doi.org\/10.3897\/asp.83.e159694"],"prefix":"10.3897","author":[{"given":"Shodo","family":"Mtow","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuichiro","family":"Machida","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2258","published-online":{"date-parts":[[2025,12,10]]},"deposited":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:47Z","timestamp":1765369307000},"score":7.671791,"resource":{"primary":{"URL":"https:\/\/arthropod-systematics.arphahub.com\/article\/159694\/element\/2\/13\/"}},"issued":{"date-parts":[[2025,12,10]]},"references-count":0,"URL":"https:\/\/doi.org\/10.3897\/asp.83.e159694.figure3","relation":{"is-component-of":[{"id-type":"doi","id":"10.3897\/asp.83.e159694","asserted-by":"object"}]},"published":{"date-parts":[[2025,12,10]]}},{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:35:37Z","timestamp":1772253337247,"version":"3.50.1"},"description":"Figure 1 SEM micrographs of genitalic segments in Petrobiellus akkesiensis female, anterior to the top. A Venter of the abdominal segments VIII and IX, ventral view. B Enlargement of the basal part of the ovipositor, ventral view. C Enlargement of the distal part of the ovipositor, ventral view. D Venter of the abdominal segments VIII and IX, dorsal view. E Enlargement of the basal part of the ovipositor, dorsal view. F Enlargement of the distal part of the ovipositor (gonapophyses of right side only), dorsal view. \u2014 Abbreviations: Cx8, 9 \u2013 coxites VIII and IX; Gp8, 9 \u2013 gonapophyses VIII and IX; Ov \u2013 ovipositor; St8, 9 \u2013 styli VIII and IX. \u2014 Scale bars: A, D \u2013 1 mm; B, C, E \u2013 200 \u00b5m; F \u2013 100 \u00b5m.","reference-count":0,"publisher":"Pensoft Publishers","content-domain":{"domain":[],"crossmark-restriction":false},"DOI":"10.3897\/asp.83.e159694.figure1","type":"component","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"source":"Crossref","is-referenced-by-count":0,"title":["Figure 1 from: Mtow S, Machida R (2025) Mating behavior of the jumping bristletail Petrobiellus akkesiensis (Hexapoda: Archaeognatha, Machilidae, Petrobiellinae): Direct spermatophore transfer via genital conjugation. Arthropod Systematics &amp;amp; Phylogeny 83: 737-756. https:\/\/doi.org\/10.3897\/asp.83.e159694"],"prefix":"10.3897","author":[{"given":"Shodo","family":"Mtow","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuichiro","family":"Machida","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2258","published-online":{"date-parts":[[2025,12,10]]},"deposited":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"score":7.6700134,"resource":{"primary":{"URL":"https:\/\/arthropod-systematics.arphahub.com\/article\/159694\/element\/2\/11\/"}},"issued":{"date-parts":[[2025,12,10]]},"references-count":0,"URL":"https:\/\/doi.org\/10.3897\/asp.83.e159694.figure1","relation":{"is-component-of":[{"id-type":"doi","id":"10.3897\/asp.83.e159694","asserted-by":"object"}]},"published":{"date-parts":[[2025,12,10]]}},{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:35:32Z","timestamp":1772253332168,"version":"3.50.1"},"description":"Files S1\u2013S3","reference-count":0,"publisher":"Pensoft Publishers","content-domain":{"domain":[],"crossmark-restriction":false},"DOI":"10.3897\/asp.83.e159694.suppl2","type":"component","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"source":"Crossref","is-referenced-by-count":0,"title":["Supplementary Material 2 from: Mtow S, Machida R (2025) Mating behavior of the jumping bristletail Petrobiellus akkesiensis (Hexapoda: Archaeognatha, Machilidae, Petrobiellinae): Direct spermatophore transfer via genital conjugation. Arthropod Systematics &amp;amp; Phylogeny 83: 737-756. https:\/\/doi.org\/10.3897\/asp.83.e159694"],"prefix":"10.3897","author":[{"given":"Shodo","family":"Mtow","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuichiro","family":"Machida","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2258","published-online":{"date-parts":[[2025,12,10]]},"deposited":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:47Z","timestamp":1765369307000},"score":7.6636314,"resource":{"primary":{"URL":"https:\/\/arthropod-systematics.arphahub.com\/article\/159694\/element\/5\/32\/"}},"issued":{"date-parts":[[2025,12,10]]},"references-count":0,"URL":"https:\/\/doi.org\/10.3897\/asp.83.e159694.suppl2","relation":{"is-component-of":[{"id-type":"doi","id":"10.3897\/asp.83.e159694","asserted-by":"object"}]},"published":{"date-parts":[[2025,12,10]]}},{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:35:37Z","timestamp":1772253337073,"version":"3.50.1"},"description":"Figure 5 Genitalic segments of an alcohol-preserved female specimen of Petrobiellus akkesiensis, with a spermatophore attached to her ovipositor. A Venter of the abdominal segments VIII and IX, dorsal view, anterior at the top. B\u2013ESEM micrographs of the same specimen shown in A, dorsal view, non-coated. B The spermatophore is attached to the basal part of the ovipositor. C Enlargement of the spermatophore. D Enlargement of the area boxed in C. E Enlargement of the boxed area in D, showing numerous sperms. \u2014 Abbreviations: Cx8, 9 \u2013 coxites VIII and IX; Gp8, 9 \u2013 gonapophyses VIII and IX; Ov \u2013 ovipositor; S \u2013 sperm; Sp \u2013 spermatophore. \u2014 Scale bars: A, B \u2013 1 mm; C \u2013 200 \u00b5m; D \u2013 50 \u00b5m; E \u2013 10 \u00b5m.","reference-count":0,"publisher":"Pensoft Publishers","content-domain":{"domain":[],"crossmark-restriction":false},"DOI":"10.3897\/asp.83.e159694.figure5","type":"component","created":{"date-parts":[[2025,12,10]],"date-time":"2025-12-10T12:21:46Z","timestamp":1765369306000},"source":"Crossref","is-referenced-by-count":0,"title":["Figure 5 from: Mtow S, Machida R (2025) Mating behavior of the jumping bristletail Petrobiellus akkesiensis (Hexapoda: Archaeognatha, Machilidae, Petrobiellinae): Direct spermatophore transfer via genital conjugation. 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