Kakuna zhongtuana, Chen, Xiang-Sheng & Yang, Lin, 2010

Chen, Xiang-Sheng & Yang, Lin, 2010, Oriental bamboo delphacid planthoppers: three new species of genus Kakuna Matsumura (Hemiptera: Fulgoromorpha: Delphacidae) from Guizhou Province, China, Zootaxa 2344, pp. 29-38 : 35-37

Kakuna zhongtuana sp. nov.

( Figs 23–34 )

Description. Body length (from apex of vertex to tip of forewings): male 5.55–6.00 mm (N = 4); female 6.25–6.60 mm (N = 6).

Coloration. General color yellowish brown to brown. Ocelli reddish brown, eyes blackish brown. Rostrum with apex fuscous. Antennae yellowish brown, except apex of basal segment and base of second segment, fuscous. Forewing ( Fig. 25 ) pale yellowish brown, with a fuscous large, longitudinal band from base of costal area to apex in male, apex of I A with a small blackish brown marking. Thorax with lateral and ventral areas pale brown. Legs yellowish brown, except apex of digitus fuscous. Abdomen brown to fuscous. Color of female paler than male, forewing ( Fig. 26 ) pale yellowish brown, apical part with a brown, broad, longitudinal band from front of transverse vein to apex.

Head and thorax. Vertex including eyes narrower than pronotum (0.79:1). Vertex shorter in middle line than wide at base (0.65:1), broad at apex narrower than at base (0.78:1). Frons longer in middle line than wide at widest part (about 2.30: 1). Antennae with basal segment 1.85 times as long as broad at apex, shorter than second segment (0.56:1). Pronotum as long as vertex in middle line. Mesonotum 1.78 times as long as vertex and pronotum together in middle line. Forewings longer in middle line than broad at widest part (3.37– 3.41:1). Post-tibial spur with about 27 teeth along hind margin. Basal segment of digitus longer than second and third combined (1.70:1).

Male genitalia. Anal segment of male ( Fig. 28 ) short, ring-like, almost sunk in the emargination of pygofer, ventral margin without process. Pygofer in profile ( Fig. 29 ) with dorsal margin shorter than ventral margin, laterodorsal angle strongly produced caudad, posterior margin slightly sinuate; in posterior view ( Fig. 30 ), with opening longer than wide, ventral margin broadly concave. Suspensorium ring-like. Aedeagus in profile ( Fig. 33 ) tubular, broadly curving medially, apex rounded; in ventral view ( Fig. 32 ) with apical half subtriangular, having two rows teeth along lateral margins. Diaphragm ( Fig. 31 ) with dorsal margin broadly produced dorsad, median part with two spine-like processes, which having a long common stalk basally. Genital style in profile ( Fig. 34 ) broad at base, narrowing apically, apex acute, inner margin with a nipple-like process at middle.

Type material. Holotype: 3, China: Guizhou, Leishan, Leigongshan National Natural Reserve (26o28′N, 108 o17′E), 1900 m, 2 Aug. 2004, D.-Y. Ge and P. Xu; paratypes: 1 3, 5 Ƥ, same data as holotype; 1 3, 1 Ƥ, Guizhou, Suiyang, Kuankuoshui National Natural Reserve (27o58′N, 107 o11′E), 4 Aug. 1984, Z.-Z Li; Guizhou, Daozhen, Dashahe Provincial Natural Reserve (28°53´N, 107°36´E), 1400 m, 17 Aug. 2004, X.-S. Chen; 1 3, Guizhou, Libo, Maolan National Natural Reserve (25°40´N, 108°05´E), 600 m, 4 Aug. 2006, F.-L. Xu.

Host plant. Bamboo [ Qiongzhuea communis Hsueh & Yi and Sinobambusa kunishii (Hayata) Naki ].

Distribution. Southwest China (Guizhou: Leishan, Suiyang, Daozhen, Libo) ( Fig. 35 ).

Remarks. This new species is similar to K. kuwayamai and K. nonspina , but can be distinguished by: i) body color paler, forewing with the marking of apex of IA unclear; ii) anal segment without process; iii) aedeagus with two rows teeth along lateral margin of apical half; iv) two processes of diaphragm with a long common stalk; v) genital style with a nipple-like process at middle of inner margin.

Etymology. The name is derived from transliteration of the Chinese “zhongtu”, meaning genital style having a nipple-like process at middle of inner margin.

Figures

FIGURE 35. Geographic distribution of Kakuna species: K. kuwayamai Matsumura (♦); K. lii sp. nov. (●); K. nonspina sp. nov. (․); K. yushaniae (Yang, 1989) (ˑ); K. zhongtuana sp. nov. (˔).

FIGURES 23 – 34. Kakuna zhongtuana sp. nov. (23) Head and thorax, dorsal view; (24) Frons and clypeus; (25) Forewing (3); (26) Forewing (Ƥ); (27) Hindwing; (28) Male anal segment, lateral view; (29) Male genital segment, lateral view; (30) Male genital segment, posterior view; (31) Diaphragm; (32) Aedeagus, ventral view; (33) Aedeagus, lateral view; (34) Left genital style, lateral view. Scale bars = 1.0 mm (Figs 23 – 24); 2.0 mm (Figs 25 – 27); 0.3 mm (Figs 29 – 30); 0.2 mm (Figs 28, 31 – 34).