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	Authors Year Title Journal
472	Bullini, L. and G. Nascetti. 1989 Speciation by hybridization in insects. Systematics Association Special Volume 39: 317-339.
475	Buntin, G.D. 1989 Dryinid (Hymenoptera: Dryinidae) parasites of leafhoppers and planthoppers (Homoptera) in forage-type bermudagrass. Journal of the Kansas Entomological Society 62(4): 602-606. pdf
535	Catindig, J.L.A., A.T. Barrion, and J.A. Litsinger. 1989 Life history and hosts of Sogatodes pusanus (Distant) (Hemiptera: Delphacidae). International Rice Research Newsletter 14(3): 41-42. pdf
572	Chelpakova, Z.M. 1989 New species of leafhoppers of the genus Celyphoma Em. (Homoptera, Issidae) from Issyk-Kul and Kochkorskaya hollows in Kirgizia. Entomologicheskoe Obozrenie 68(2): 308-309. pdf
573	Chen, B.H. 1989 Effect of a parasitoid and rice cultivars on the brown planthopper, Nilaparvata lugens (Stal) (Homoptera: Delphacidae). Bulletin of the Society of Entomology (Taichung) 22: 7-13.
575	Chen, B.H. and J.Z. Yu 1989 Anagrus incarnatus Haliday, a new record from eggs of brown planthopper in Taiwan. Journal of Agricultural Research of China 38(4): 458-462.
581	Chen, C.C. and R.J. Chiu. 1989 Transmission of rice wilted stunt virus by brown planthopper (Nilaparvata lugens Stal.). Bulletin of Taichung District Agricultural Improvement Station. 23: 3-10. pdf
583	Chen, C.C and W.H. Ko. 1989 Epidemiological studies or rice stripe virus disease in Taiwan. Plant Protection Bulletin (Taiwan) 31(3): 290-303.
599	Chen, Y.X. 1989 Investigation on Dryinyds of Rice Planthoppers in Sinan County, Guizhou Province. Entomological Knowledge 26(2): 77-79.
688	Chua, T.H. and E. Mikil. 1989 Effects of prey number and stage on the biology of Cyrtorhinus lividipennis (Hemiptera: Miridae): a predator of Nilaparvata lugens (Homoptera: Delphacidae). Environmental Entomology 18(2): 251-255.
693	Chun, L-C., T-Y. Chung, and M.R. Wilson. 1989 Achilidae of Taiwan (Homoptera: Fulgoroidea). Taiwan Museum Special Publication Series 8: 1-64.
696	Chung, T-Y. 1989 Ricaniidae of Taiwan (Homoptera: Fulgoroidea). Taiwan Museum Special Publication Series 8: 171-204.
801	Cook, A.G. and T.J. Perfect. 1989 The population characteristics of the brown planthopper, Nilaparvata lugens, in the Philippines. Ecological Entomology 14(1): 1-9.
812	Courcy Williams, M. de. 1989 A preliminary list of the Irish Auchenorrhyncha (Homoptera). Bulletin of the Irish Biogeographical Society 12: 135-148.
814	Cravedi, P. 1989 Infestazioni di Metcalfa pruinosa (Say) (Auchenorrhyncha Flatidae) in provincia di Piacenza (Emilia-Romagna) [ Metcalfa pruinosa (Say) (Auchenorrhyncha Flatidae) infestation in the province of Piacenza (Emilia-Romagna) (Italy).] Bollettino di Zoologia Agraria di Bachicoltura 21: 203-205.
875	Deitz, L.L. and L.M. Osegueda. 1989 Effectiveness of bibliographic data bases for retrieving entomological literature: a lesson based on Membracoidea (Homoptera). Bulletin of the Entomological Society of America 20: 33-39.
926	den Hollander, J. 1989 Electrophoretic studies on planthoppers and leafhoppers of agricultural importance. Systematics Association Special Volume 39: 297-315.
959	Denno, R.F., K.L. Olmstead, and E.S. McCloud. 1989 Reproductive cost of flight capability: A comparison of life history traits in wing dimorphic planthoppers. Ecological Entomology 14: 31-44.
1043	Ding, J.H., F. Zhang, and C.L. Hu. 1989 New records of Delphacidae from northeastern district, China (Homoptera: Fulgoroidae [Fulgoroidea]). Journal of Nanjing Agricultural University [Nanjing Nongye Daxue Xuebao] 12(2): 119-121.
1112	Dlabola, J. 1989 Neue Issiden und Andere Zikadenarten des Mediterraneums und vom Zuliegenden Eremial (Homoptera, Auchenorrhyncha). [New issids and other species of cicadas of the Mediterranean Region and the adjacent Eremian Region (Homoptera: Auchenorrhyncha).] Sbornik Narodniho Muzea V Praze Rada B Prirodni Vedy 45(1): 21-59. [German] pdf
1150	Çali, S., Y. Özdemir and A. Kalkandelen. 1989 Ankara’da domateslerde örülen Stolbur hastaliği üzerinde araştirmalar. Bitki Koruma Bülteni 29(1-2): 85-108. pdf
1251	Edwards, G.B. and M.C. Thomas. 1989 Insect Detection - an Issid Planthopper, Hysteropterum punctiferum Walker. Tri-Ology 28(3): 5.
1252	Egan, B.T., C.C. Ryan, and R.I.B. Francki. 1989 Fiji disease. In: C. Ricaud, B. T. Egan, A. G. Gillaspie and C. G. Hughes, (eds.). Diseases of sugarcane. Elsevier, Amsterdam, the Netherlands. Pp. 263-287
5040	Kalkandelen, A. 1989 Türkiye Cixiidae (Homoptera) Türleri Üzerinde Taksonomik Çalışmalar, I. Familyanın Morfolojik Özellikleri ve Cins Teşhis. Anahtarı. IV. Pentastirini Pseudoliarus ve Eumecurus. [Taxonomic studies on species of Cixiidae (Homoptera) from Turkey. 4. Pentastirini: Pseudoliarus and Eumecurus]. Bitki Koruma Bulteni 29(3-4): 117-132. pdf
1323	Emeljanov, A.F. 1989 New species of leafhoppers (Homoptera, Cicadellidae) from the Mongolian Peopl's Republic and adjacent regions of the USSR. Nasekomye Mongolii [Insects of Mongolia] 10: 118-125. [In Russian]

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