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Yong Jung Kwon, Eun Yeop Huh and Sang Jae Suh Dept 2018년 한국곤충학회2020년 한국곤충학회 20202018년도년 한국곤충학회한국곤충학회추계정기심포지엄학술논문 발표대회 추계 학술논문 발표대회정기심포지엄 Taxonomic revision of the leafhopper genus Stirellus Osborn et Ball from Korea (Homoptera: Cicadellidae) Jin Hyung KWON1,2, Sang Jae SUH2, and Yong Jung KWON2 1 Illinois Natural History Survey, University of Illinois, Champaign, IL 61820, USA. 2 School of Applied Biosciences, Kyungpook National University, Daegu, Korea. 3. Stirellus yeongnamensis (Kwon & Lee, 1979) Abstract Doratulina yeongnamensis Kwon & Lee, 1979d, Nat. & Life 9(2): 100, 103 (Korea). So far, three leafhopper species of the genus Stirellus Osborn et Ball, 1902, belonging to Distribution. Korea (South). the tribe Stenometopiini Baker, 1923, have been known to be occurred in Korea: Stirellus Host plant. Gramineae spp. grandis (Matsumura, 1914), S. productus (Matsumura, 1902) and S. yeongnamensis Remarks. This species seems to be allied to Stirellus breviceps (Matsumura, 1914), hitherto known (Kwon et Lee, 1979). In the course of taxonomic survey on the leafhoppers in Korean from Taiwan based on the female holotype only. Both species have the vertex structure in being roundly produced apically. peninsula, the authors have found a further species new to science, dwelling on On the other hand, the distributional record in China of the species illustrated by Duan et al., (2016) gramineous maritime herbs in Southern island of the Korean peninsula: Stirellus koreanus as S. yeongnamensis is different apparently from the present one by having broad subtriangularly sp. nov. Descriptions, illustrations of morphological features and keys to the Korean produced vertex, and thus it may be belonging to another new species. species of the genus are provided respectively. Key words: Auchenorrhyncha, Cicadellidae, Deltocephalinae, taxonomy, morphology, identification. 4. Stirellus koreanus sp. nov. Description. General coloration yellowish brown, tinted with metalic greenish blue on dorsum, dark brown to black on venter. Head including eyes nearly as wide as pronotum, with anterior margin Systematics subconically and gentle roundly turned to face, more produced apically in female. Vertex subtriangularly produced apically, apparently longer than width between eyes (ratio, male 1.8:1.5, Genus Stirellus Osborn & Ball, 1902 female 2.1:1.7). Ocellus next to eye on anterior margin. Anteclypeus subparallel-sided, extending beyond normal curve of genae apically. Pronotum apparently shorter than vertex mesally (ratio, male Key to species of the genus Stirellus from Korea 1.4: 1.8, female 1.5:2.1). Forewings macropterous, generally reaching to apex of abdomen in male, 1. Head subtriangularly produced ·································································2 apparently shorter and reaching to before apex of ovipositor in female. – Head not acutely produced, anterior margin rounded to face ··········· S. yeongnamensis Male pygofer lobe without macrosetae, gentle roundly narrowed apically in lateral view. Subgenital 2. Head acutely produced. Body without metalic greenish blue tint on dorsum ············ 2 plates with outer side rather obliquely narrowed, truncate apically. Aedeagus ovoid basally, with – Head subtriangularly produced. Body tinted with metalic greenish blue on dorsum shaft bent at near base, straight distally, with apex slightly curved downwards. Styles narrow, with ·················································································· S. koreanus sp. nov. apophysis elongate and dully pointed, slightly meandering mesally. Connective stem rectangular in 3. Style apophysis moderately long ···················································· S. grandis dorso-ventrally, rather shorter than arms. Distribution. Korea (South). – Style apophysis very long ··························································S. producta Host plant. Gramineous maritime herbs Remarks. This new species is distinguished from other allied ones by having the body which is 1. Stirellus grandis (Matsumura, 1914) generally tinted with metalic greenish blue on dorsum, uniquely. Aconura grandis Matsumura, 1914, Journ. Coll. Agr. Tohoku Imp. Univ. 5: 229 (Japan). Distribution. Korea (Central, South, Jejudo), Japan (Honshu), China (Guangdong, Taiwan), Bonin Is. Host plant. Gramineae spp. 2. Stirellus productus (Matsumura, 1902) Aconura producta Matsumura, 1902, Termesz. Füz. 25: 385-386 (Japan). Distribution. Korea (Central, South, Jejudo), Japan (Honshu, Kyushu, Ryukyu), China (Taiwan). Host plant. Gramineae spp., Hordeum sativum, wheat, weed (all cf. Lee & Kwon, 1979; Kwon & Huh, 2001). Fig. 1. Stirellus koreanus sp. nov. A. male habitus, B. female habitus, C. face, D. male genitalia in lateral view, E. ditto, ventral view, F. ditto, dorsal view, G. aedeagal base in lateral view, H. style in dorsal view..
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