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Zootaxa, Oriental Bamboo Delphacid Planthoppers 中国科技论文在线 http://www.paper.edu.cn Zootaxa 2344: 29–38 (2010) ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2010 · Magnolia Press ISSN 1175-5334 (online edition) Oriental bamboo delphacid planthoppers: three new species of genus Kakuna Matsumura (Hemiptera: Fulgoromorpha: Delphacidae) from Guizhou Province, China XIANG-SHENG CHEN1, 2, 3 & LIN YANG1, 2 1The Provincial Key Laboratory for Agricultural Pest Management of Mountainous Region of Guizhou, Guizhou University, Guiyang, Guizhou Province 550025, P. R. China 2Institute of Entomology, Guizhou University, Guiyang, Guizhou Province 550025, P. R. China 3Corresponding author. E-mail: [email protected] Abstract Three new species of the Oriental bamboo delphacid planthopper genus Kakuna Matsumura (Hemiptera: Fulgoromorpha: Delphacidae: Delphacinae: Delphacini), K. lii sp. nov. (Guizhou: Jiangkou, Suiyang, Daozhen), K. nonspina sp. nov. (Guizhou: Jiangkou, Leishan) and K. zhongtuana sp. nov. (Guizhou: Leishan, Suiyang, Daozhen, Libo), are described and illustrated from southwestern China. The generic characteristics are redefined. A checklist and a key to species of genus Kakuna are provided. Key words: Fulgoroidea, planthopper, bamboo pests, Oriental region Introduction The genus Kakuna was erected by Matsumura (1935) based on specimens from Sapporo, Hokkaido, Japan (type species: Kakuna kuwayamai Matsumura, 1935). Yang (1989) erected a new genus Parametopina for a new species from bamboo of Taiwan, China, Parametopina yushaniae Yang. Recently, Ding (2006) regarded Parametopina Yang as a new synonymy of Kakuna Matsumura, and Parametopina yushaniae Yang was transferred to Kakuna as the new combination Kakuna yushaniae (Yang). To date, only the two species, K. kuwayamai (Japan: Hokkaido; China: Zhejiang, Fujian) and K. yushaniae (China: Taiwan), are included in the genus Kakuna and restricted to Oriental region (Ding 2006) (Fig. 35). In this paper three new species of the genus Kakuna are described and illustrated from several national or provincial natural reserves (Fanjinshan, Kuankuoshui, Leigongshan and Dashahe) in China. The generic characteristics are redefined. A checklist and a key to known species of Kakuna are provided. Materials and methods The methods and morphological terminology used in this study follow Ding (2006). Spinal formula of hind leg means the numbers of spines of the tibia, plus the 1st and 2nd tarsomeres. The genital segments of the examined specimens were macerated in 10% NaOH and drawn from preparations in glycerin using a light microscope. Figures of the specimens were made using Leica MZ12.5 and edited and enhanced using Adobe Photoshop 7.0 (Adobe Systems). Type specimens are deposited in the Institute of Entomology, Guizhou University, Guiyang, Guizhou Province, China (IEGU). Accepted by M. Fletcher: 16 Dec. 2009; published: 26 Jan. 2010 29 转载 中国科技论文在线 http://www.paper.edu.cn Taxonomy Kakuna Matsumura, 1935 (Figs 1–34) Kakuna Matsumura, 1935: 76; Ding, 2006: 404. Parametopina Yang, 1989: 308, synonymized by Ding, 2006. Type species. Kakuna kuwayamai Matsumura, 1935, by original designation. Diagnosis. Body size relatively large (body length including forewing 5.5–8.0 mm); general color yellowish brown, dorsum with milk-white longitudinal median stripe from middle of vertex, via pro- and mesonotum, posterior margin, to middle of posterior margin of forewing; forewing with large, longitudinal, brown marking (in male, from base of costal margin to apex; in female, from transverse vein to apex); antennae long, reaching level with middle of postclypeus; male pygofer in profile, laterodorsal angle usually produced caudad; dorsal margin of diaphragm produced dorsad in spinous processes; aedeagus long, tubular; genital styles long, closely curving apically. Description. Body size relatively large, body length (from apex of vertex to tip of forewings): male 5.5– 7.0 mm, female 6.5–8.0 mm. Coloration. General color yellowish brown, dorsum of body with milk-white longitudinal median stripe from middle of vertex to middle of posterior margin of forewings, distinctly expanding at scutellum and narrow at forewing (Figs 1, 3, 12, 14, 23, 25, 26). Forewings with large, longitudinal, brown marking from base of costal area to apex in male (Figs 3, 14, 25) and with small, longitudinal, brown marking from transverse vein to apex in female (Fig. 26). Head. Head (Figs 1, 12, 23) including eyes narrower than pronotum (0.79–0.81:1). Vertex broad, as long in median line as broad at base, apically narrower than at base, lateral margins shallowly concave, diverging basally, carinae distinct, submedian carinae originating from middle of lateral margins, uniting at apex, slightly convex outer of apical margin of vertex. Frons (Figs 2, 13, 24) relatively long, longer in median line than widest part about 2.28–2.40:1, widest above the level of ocelli, wider at base than at apex, median carina forked at extreme base. Post clypeus long, wider at base than frons at apex. Antennae cylindrical, long, reaching to level with middle of post clypeus, with basal segment longer than wide at apex (about 1.85: 1.00), shorter than second segment (about 0.56: 1). Thorax. Pronotum (Figs 1, 12, 23) shorter than vertex in median line, with lateral carinae incurved, almost reaching to hind margin. Mesonotum distinctly longer in median line than vertex and pronotum together (1.85–1.90: 1), tricarinae, median carina disappearing before scutellum. Forewings (Figs 3, 14, 25, 26) long and narrow, longer than widest part (2.93–3.41:1). Hindwings subtriangular, M and Cu1a with long common stem after transverse vein, M+Cu1a not touching Cu1b (Fig. 15). Post tibial spur thin, with 27–30 teeth along hind margin, basal segment of digitus longer than second and third combined (1.70–1.85:1). Male genitalia. Anal segment of male (Figs 4, 5, 16–19, 28–30) deeply sunk into dorsal emargination of pygofer, short, ring-like, process of ventroapical margin present or absent. Pygofer in profile (Figs 4, 18, 29) slightly shorter dorsally than ventrally, laterodorsal angle usually strongly produced caudad, posterior margin straight or concave, in posterior view (Figs 5, 19, 30) with opening longer than wide, ventral margin broadly concave, without medioventral process. Diaphragm (Figs 6, 20, 31) narrow, with dorsal margin produced dorsad in two spinous processes or forked process. Suspensorium ring-like, with broad stalk. Aedeagus (Figs 8, 9, 21, 32, 33) tubular, long. Genital styles (Figs 10, 11, 22, 34) long, narrowing or tapering to apex, in posterior view (Figs 5, 19, 30) both converging apically. Host plant. Bamboo. Distribution. Oriental region (China and Japan) (Fig. 35). 30 · Zootaxa 2344 © 2010 Magnolia Press CHEN & YANG 中国科技论文在线 http://www.paper.edu.cn Checklist of species of Kakuna Matsumura, 1935 Kakuna kuwayamai Matsumura, 1935; China (Zhejiang, Fujian), Japan (Hokkaido). Kakuna lii sp. nov.; China (Guizhou). Kakuna nonspina sp. nov.; China (Guizhou). Kakuna yushaniae (Yang, 1989); China (Taiwan). Kakuna zhongtuana sp. nov.; China (Guizhou). Key to species of genus Kakuna (male) 1. Anal segment of male with processes (Figs 16, 17, 19); two processes of diaphragm very long, separated basally (Figs 19, 20); aedeagus in profile straight, without any process (Fig. 21); genital style in profile with apex subquad- rate, apical margin truncate (Fig. 22) .........................................................................................K. nonspinata sp. nov. - Anal segment of male without process (Figs 5, 28, 30); two processes of diaphragm relatively short, both touching at base or with a common stalk basally (Figs 6, 31); aedeagus in profile curving dorsally, apical half with spine-like processes (Figs 8, 9, 32, 33); genital style tapering apically (Figs 10, 11, 34) ............................................................ 2 2. Aedeagus with two rows teeth along apical half of lateral margin (Figs 32, 33); inner margin of genital style with a nipple-like process medially (Figs 30, 34) ............................................................................... K. zhongtuana sp. nov. - Aedeagus with several spine-like processes at apical part dorsally or ventrally (Figs 8, 9); genital style without pro- cess (Figs 10, 11) ......................................................................................................................................................... 3 3. Ventral margin of anal segment produced ventrally; pygofer in profile with laterodorsal angle not produced caudad; processes of diaphragm short; aedeagus not expanded at apex, apical part with five pairs of spine-like processes lat- erally; genital styles relatively broad and short ........................................................................... K. yushaniae (Yang) - Ventral margin of anal segment not produced ventrally (Fig. 5); pygofer in profile with laterodorsal angle strongly produced caudad (Fig. 4); processes of diaphragm long (Fig. 6); aedeagus in profile distinctly expanded at apex, api- cal part with six spine-like processes (Fig. 8); genital styles relatively slender and long (Figs 5, 10, 11) .................. 4 4. Processes of diaphragm straight; aedeagus with three spine-like processes both dorsally and ventrally; suspensorium with stalk longer in middle line than broad .........................................................................K. kuwayamai Matsumura - Processes of diaphragm with apex curving laterad (Fig. 6); aedeagus with six spine-like processes
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