Abstract
Two idolothripine genera, Bactrothrips and Megalothrips, from Asia between India and Taiwan are studied taxonomically. Ten species of Bactrothrips and four species of Megalothrips are recognized from this area. Among them two species are newly described and one species is recalled from synonymy: B. brevitubus Takahashi, B. flectoventris Haga & Okajima, B. furvescrus Dang & Qiao, B. honoris (Bagnall), B. idolomorphus (Karny), B. luteus Ananthakrishnan, B. malayanus sp. nov., B. pictipes Haga & Okajima, B. quadrituberculatus (Bagnall), B. serraticornis (Bagnall) stat. rev., M. andrei Mound & Palmer, M. curvidens Okajima, M. rotundus Guo, Cao & Feng and M. sulawesicus sp. nov. Two species are newly synonymized: B. elongatus Dang & Qiao is newly synonymized with B. honoris; B. brevitubus zhamanus Han & Zhang is newly synonymized with B. luteus, despite it was previously synonymized with B. pictipes. The female Bournier’s Apparatus of Bactrothrips species is briefly explained, and its taxonomic importance is mentioned. It is reported for the first time that the notopleural sutures of Megalothrips species show two distinct patterns. Two illustrated keys are provided for nine Bactrothrips species, and for four Megalothrips species from Asia.
References
- Ananthakrishnan, T.N. (1971) Mycophagous Thysanoptera – III. Oriental Insects, 5, 189–207. https://doi.org/10.1080/00305316.1971.10434008
- Ananthakrishnan, T.N. (1973) Mycophagous Tubulifera of India (Thysanoptera: Insecta). Occasional Publication of the Entomology Research Unit, Loyola College, No. 2, 1–144.
- Ananthakrishnan, T.N. & Dhileepan, K. (1984) Thrips-fungus association with special reference to the sporophagous Bactrothrips idolomorphus (Karny). (Tubulifera: Thysanoptera). Proceedings of Indian Academy of Science (Animal Science), 93 (3), 243–249. https://doi.org/10.1007/BF03186284
- Bagnall, R.S. (1908) On some new genera and species of Thysanoptera. Transactions of the Natural History Society of Northumberland, 3, 183–217.
- Bagnall, R.S. (1921) Brief descriptions of new Thysanoptera XII. Annals and Magazine of Natural History, (9) 8, 393–400. https://doi.org/10.1080/00222932108632598
- Bournier, A. (1962) L’apparell génital femelle de Caudothrips buffai Karny et sa pompe spermatique (Thysan.). Bulletin de la Société entomologique de France, 67 (9–10), 203–207. https://doi.org/10.3406/bsef.1962.20671
- Chen, L.S. (1982) Studies on the subfamily Idolothripinae (Thysanoptera: Phlaeothripidae) in Taiwan. NTU Phytopathologist and Entomologist, 9, 53–67.
- Dang, L. & Qiao, G. (2012) The genus Bactrothrips in China (Thysanoptera: Idolothripinae): morphological and molecular data, and a key with two new species. Zootaxa, 3449 (1), 47–61. https://doi.org/10.11646/zootaxa.3449.1.3
- Eow, L.X., Mound, L.A. & Ng, Y.F. (2011) genera of Spore-Feeding Thysanoptera from Southeast Asia (Phlaeothripidae, Idolothripinae), with a species checklist from Peninsular Malaysia. Zootaxa, 2928 (1), 1–19. https://doi.org/10.11646/zootaxa.2928.1.1
- Guo, F.Z., Cao, S.J. & Feng, J.N. (2010) A new recorded genus and a new species of Megalothrips Uzel (Thysanoptera, Phlaeothripidae) from China. Acta Zootaxonomica Sinica, 35, 733–735.
- Haga, K. (1972) Thysanoptera occurring on dead leaves and dead branches. The Annual Report of the Attached High School of Osaka Kyoiku University, 14, 99–112. [in Japanese, with English summary]
- Haga, K. (1975) Female reproductive system of megathripine species, Bactrothrips brevitubus (Thysanoptera: Insecta). Bulletin of the Sugadaira Biological Laboratory of Tokyo Kyoiku University, 7, 13–24.
- Haga, K. & Okajima, S. (1989) A taxonomic study of the genus Bactrothrips Karny (Thysanoptera, Phlaeothripidae) from Japan. Bulletin of the Sugadaira Montane Research Center, University of Tsukuba, 10, 1–23.
- Han, Y.F. (1997) Economic Insect Fauna of China. Fasc. 55. Science Press, Beijing, 513 pp.
- Han, Y.F. & Zhang, G.X. (1981) Thysanoptera. In: Wang, B.H. & Huang, F.S. (Eds.), Insects of Tibet. Vol. I. Science Press, Beijing, pp. 295–300.
- Hood, J.D. (1908) Three new North American Phloeothripidae. Canadian Entomologist, 40, 305–309. https://doi.org/10.4039/Ent40305-9
- Karny, H. (1919) Synopsis der Megathripidae (Thysanoptera). Zeitschrift für wissenschaftliche Insektenbiologie, 1, 113–118.
- Mound, L.A. (1968) A review of R.S. Bagnall’s Thysanoptera collections. Bulletin of the British Museum (Natural History). Entomology Supplement, 11, 1–181. [https://www.biodiversitylibrary.org/page/40874054] https://doi.org/10.5962/bhl.title.78614
- Mound, L.A. (1970) Convoluted maxillary stylets and the systematics of some Phlaeothripine Thysanoptera from Casuarina trees in Australia. Australian Journal of Zoology, 18, 439–463. https://doi.org/10.1071/ZO9700439
- Mound, L.A. & Palmer, J.M. (1983) The generic and tribal classification of spore-feeding Thysanoptera (Phlaeothripidae: Idolothripinae). Bulletin of the British Museum (Natural History), Entomology, 46, 1–174. [https://www.biodiversitylibrary.org/page/2355745]
- Mound, L.A. & Tree, D.J. (2011) Australian spore-feeding Thysanoptera of the genus Bactrothrips (Phlaeothripidae-Idolothripinae). Zootaxa, 3087 (1), 56–65. https://doi.org/10.11646/zootaxa.3087.1.2
- Mound, L.A. & Tree, D.J. (2014) Fungus-feeding phlaeothripine Thysanoptera in the genus Holothrips from Australia and New Caledonia, with a structurally similar new genus, Holoengythrips. Zootaxa, 3860 (2), 125–148. https://doi.org/10.11646/zootaxa.3860.2.2
- Mound, L.A., Tree, D.J. & Wells, A. (2022) Convoluted maxillary stylets among Australian Thysanoptera Phlaeothripinae associated mainly with Casuarinaceae trees, Zootaxa, 5190 (3), 301–332. https://doi.org/10.11646/zootaxa.5190.3.1
- Okajima, S. (1999) The significance of stylets length in Thysanoptera, with a revision of Oidanothrips (Phlaeothripidae), an Old World genus of large fungus-feeding species. Entomological Science, 2, 265–279.
- Okajima, S. (2006) The Insects of Japan. Vol. 2. The suborder Tubulifera (Thysanoptera). Touka Shobo Co Ltd., Fukuoka, 720 pp.
- Stannard, L.J. (1968) The Thrips, or Thysanoptera, of Illinois. Bulletin of the Illinois Natural History Survey, 29, 213–552. https://doi.org/10.21900/j.inhs.v29.166
- ThripsWiki (2023) ThripsWiki - providing information on the World’s thrips. Available from: http://thrips.info/wiki/Main_Page (accessed 10 January 2023)
- Ueda, T. & Haga, K. (1987) On the structure of Bournuer’s Apparatus of Bactrothrips (Thysanoptera, Phlaeothripidae). Bulletin of the Sugadaira Montane Research Center, University of Tsukuba, 8, 155–165. [in Japanese, with English summary]
- Uzel, H. (1895) Monographie der Ordnung Thysanoptera. Königratz, Bohemia, 472 pp.
- Wang, C.L., Chen, Y.J. & Lin, F.C. (2018) Taxonomic description of Idolothripinae (Thysanoptera: Tubulifera: Phlaeothripidae) of Taiwan. I. Tribe Idolothripini. Journal of Taiwan Agriculture Research, 67, 323–336. https://doi.org/10.6156/JTAR.2018_12.6(4).0001