The species of the genus Gaeana Amyot & Serville occur in the Oriental region, and 16 species are presently known in this genus. | HỘI NGHỊ KHOA HỌC TOÀN QUỐC VỀ SINH THÁI VÀ TÀI NGUYÊN SINH VẬT LẦN THỨ 4 THE GENUS GAEANA Amyot & Serville, 1843 (HEMIPTERA: CICADIDAE) FROM VIETNAM WITH KEY TO SPECIES PHAM HONG THAI, TA HUY THINH Institute of Ecology and Biological Resources JENG-TZE YANG National Chung Hsing University, Taiwan INTRODUCTION The species of the genus Gaeana Amyot & Serville occur in the Oriental region, and 16 species are presently known in this genus. Distant (1888) described a new species from Vietnam, Gaeana delinenda, which was subsequently transferred to the genus Balinta). Distant (1913a) described 8 new species, including two species from Vietnam: Gaeana annamensis Distant, 1913 and Gaeana sultana Distant, 1913. Distant (1913b) described one more new vietnamese species: Gaeana vitalisi Distant, 1913. Distant (1917a) recorded 4 species: Gaeana vitalisi Distant, 1913; Gaeana maculata Drury, 1773; Gaeana sultana Distant, 1913 and Gaeana paviei Noualhier, 1896 (the latter transferred by Metcalf (1963a) to the genus Tosena Amyot and Audinet-Serville, 1843). Jacobi (1902) described one species from Vietnam: Gaeana electa Jacobi, 1902 (transferred by Boulard (2005d) to the genus Becquartina Kato, 1940). Lee, 2008 recorded six species for the fauna of Vietnam: Gaeana vitalisi Distant, 1913; Gaeana maculata Drury, 1773; Gaeana annamensis Distant, 1913; Gaeana sultana Distant, 1913; Gaeana laosensis Distant, 1917 and Gaeana vestita Distant, 1905. Pham & Yang, 2009 recorded two more species: Gaeana cheni Chou et Yao, 1985 and Gaeana hainanensis Chou et Yao, 1985. MATERIALS AND METHOD Specimens were collected by netting and light trapping. Previously collected specimens were included in our evaluations. Specimens are deposited at the Department of Insect Systematics of the Institute of Ecology and Biological Resources, Hanoi; in the Netherlands Centre of Biodiversity, Leiden and at the Royal Belgian Institute of Natural Sciences (Brussels). The tribal classification of this study .
