Kakuna lii, 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 : 31-33

Kakuna lii sp. nov.

( Figs 1–11 )

Description. Body length (from apex of vertex to tip of forewings): male 5.50–5.60 mm (N = 11); female 6.20–6.70 mm (N = 21).

Coloration. General color brown. Ocelli reddish brown, eyes black brown. Antennae with apex of basal segment and base of second segment, fuscous. Rostrum with apex fuscous. Forewing ( Fig. 3 ) yellowish brown, with a large, longitudinal, fuscous marking from base of costal area to apex in male, apex of I A blackish brown. Legs brown, except apex of digitus fuscous. Abdomen fuscous. Body color of female yellowish brown. Forewing with a brown marking between R2+M1 and Cu1+M2. Dorsal areas of abdomen and ovipositor fuscous.

Head and thorax. Vertex including eyes narrower than pronotum (0.81:1). Vertex shorter in middle line than wide at base (0.83:1), broad at apex narrower than at base (0.83:1). Frons 2.4 times longer in middle line than widest part, wider at base than at apex (1.05:1). Antennae with basal segment 1.75 times as long as broad, shorter than second segment (0.44:1). Pronotum as long as vertex. Mesonotum 1.41 times as long as vertex and pronotum together in middle line. Forewing longer in middle line than broad at widest part (2.93:1). Posttibial 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. 5 ), ventral margin without process. Pygofer in profile ( Fig. 4 ) with dorsal margin shorter than ventral margin, laterodorsal angle strongly produced caudad, posterior margin slightly concave; in posterior view ( Figs 5, 6 ), with opening V-like, ventral margin broadly concave. Suspensorium ( Figs 7, 8 ) ring-like, basal stalk shorter in middle line than total length (0.19:1), shorter in middle line than broad at base (0.38:1). Aedeagus ( Figs 8, 9 ) tubular, slightly broadly curving dorsad, expanding apically, dorsal margin having six spine-like processes. Diaphragm ( Fig. 6 ) with dorsal margin broadly produced dorsad, median part with two spine-like processes, which slightly curving laterad apcially. Genital styles ( Figs 10, 11 ) slender, long, slightly broad at base, narrowing apically, in posterior view ( Fig. 11 ), apex beak shaped.

Type material. Holotype: 3, China: Guizhou, Jiangkou, Fanjingshan National Natural Reserve (27˚55´N, 108˚41´), Jinding, 2200 m, 31 May 2002, X.-S. Chen; paratypes: 2 3, data same as holotype; 1 3, Guizhou, Suiyang, Kuankuoshui National Natural Reserve (27°58´N, 107°11´E), 4 Aug. 1984, Z.-Z. Li; 1 Ƥ, Fanjingshan National Natural Reserve, 25 Jul. 1986, Z.-Z. Li; 2 3, 1 Ƥ, Fanjingshan National Natural Reserve, 9 Aug. 1994, Z.-Z. Li; 1 3, 3 ƤƤ, Fanjingshan National Natural Reserve, Jinding, 11 Aug. 1994, Z.- Z. Li; 2 3, 13 ƤƤ, Fanjingshan National Natural Reserve, 29 Jul. 2001, X.-S. Chen; 1 3, Fanjingshan National Natural Reserve, 500-800m, 1 Jun. 2002, X. -S. Chen; 1 3, 3 ƤƤ, Guizhou, Daozhen, Dashahe Provincial Natural Reserve (28°53´N, 107°36´E), 1400m, 18 Aug. 2004, X. -S. Chen.

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

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

Remarks. This new species is very closely related to K. kuwayamai but differs in: i) dorsal margin of diaphragm of male with processes curved latrad (in the latter, apex of processes straight); ii) aedeagus relatived slender, slightly curved medianally, apex with spinous processes at dorsal margin (in the latter, aedeagus relatively thick, straight, apex with spinous processes both at dorsal and ventral margin); iii) basal stalk of suspensorium short, about fifth of total length (in the latter, basal stalk of suspensorium long, about half of total length).

Etymology. This species name is derived from the last name of one of the collectors of the species, Prof. Z.-Z. Li.

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 1 – 11. Kakuna lii sp. nov. (1) Head and thorax, dorsal view; (2) Frons and clypeus; (3) Forewing (3); (4) Male genital segment, lateral view; (5) Male genital segment, posterior view; (6) Pygofer, posterior view; (7) Suspensorium; (8) Aedeagus and suspensorium, lateral view; (9) Aedeagus, ventral view; (10) Right genital style, lateral view; (11) Right genital style, posterior view. Scale bars = 0.5 mm (Figs 1 – 2, 4 – 6); 2.0 mm (Fig. 3); 0.2 mm (Figs 7 – 11).