Flata truncata, Peng, Ling-Fei, Fletcher, Murray J. & Zhang, Ya-Lin, 2012

Peng, Ling-Fei, Fletcher, Murray J. & Zhang, Ya-Lin, 2012, Review of the Oriental planthopper genus Flata Fabricius (Hemiptera: Fulgoroidea: Flatidae) with the description of five new species, Zootaxa 3399, pp. 1-22 : 17-21

10. Flata truncata sp. nov.

( Figs. 13 , 14 )

Color. Body and tegmina greenish, stramineous or greyish white; head and legs faded stramineous; eyes dark brown; tegmina with many small round black spots ( Fig. 13 ).

Morphology. Body length: 17–18 mm.

Head: Vertex 5.2 times wider than long; frons slightly longer than wide; frontoclypeal suture shallowly convex; rostrum extending to meso-trochanter ( Fig. 13 ).

Thorax: Pronotum anterior margin convex; lateral margin extending lateral-ventrally, almost articulated with postocular eminence. Mesonotum posterior angle about 85° ( Fig. 13 A). Metatibia with seven spines apically; basal segment of metatarsi with nine spines apically. Tegmina with costal margin of elongate convex; apical and sutural margins truncate; apical angle about 80°; sutural angle about 90°; vein Cu once forked, the branches joining postclaval margin ( Fig. 13 D).

Male genitalia: Pygofer trapezoid in lateral view; anterior margin S-shape; dorsal margin slightly concave ( Fig. 14 E). Genital style triangular; a short process positioned at dorsalocaudal median; ventral margin truncate ( Fig. 14 E). Anal tube in lateral view slender and long; apex inflated, bent down at midlength ( Fig. 14 E). Phallobase in lateral view tubular at base; dorsolateral lobe long ( Fig. 14 G); apex each side with two processes, inner one short, outer one longer than inner one ( Figs. 14 G, H); lateral emargination deeply concave; ventral lobe short, triangular, with a single process ( Fig. 14 G). Theca with one small forked process at middle of flank ( Fig. 14 F); two teeth positioned at apical third of ventral margin ( Fig. 14 F); apex bipartite, each side with two processes, anterior one long and heavily branched, posterior one simple and slightly circled ( Figs. 14 F, I).

Type material. Holotype, 3, Jiangfengling, Hainan Province, China, 05.v.2008, Men Qiulei, 800 m, light trap ( NWAFU); paratypes, CHINA, Hainan Province: 1Ƥ, Jianfengling, 6.vi.2007, Wang Yinglun & Zhai Qing ( NWAFU); 13, Jiangfengling, 05.v.2008, Men Qiulei, 800 m, light trap ( NWAFU); 13, Jiangfengling, 08.v.2008, Men Qiulei, 800 m, ( NWAFU); 13, Wufenqu, Jiangfengling, 06.vii.1981 ( SYSU); 13, Sanfenqu, Jiangfengling, 12.vii.1982, Hua Lizhong ( SYSU).

Etymology. The specific name is derived from the English word “truncate”, which means the apical and sutural margins of tegmen are truncate.

Distribution. China (Hainan).

Remarks. This new species differs from other similar species of the genus by the male anal tube being oval inflated at the apex ( Figs. 14 E, J) and the ventral lobe of the phallobase being triangular in lateral view, without processes ( Fig. 14 G).

Figures

FIGURE 13. Flata truncata sp. nov.; A. head and thorax, dorsal view; B. face; C. head and thorax, left lateral view; D. tegmen.

FIGURE 14. Flata truncata sp. nov.; A. head and thorax, dorsal view; B. face; C. head and thorax, left lateral view; D. tegmen; E. male genitalia, left lateral view; F. theca, left lateral view; G. phallobase, left lateral view; H. phallobase, dorsal view; I. theca, dorsal view; J. anal tube, dorsal view. (a: dorsolateral lobe of phallobase; b: inner process of phallobase; c: outer process of phallobase; d: lateral emargination of phallobase; e: ventral lobe; f: process of thecal flank; g: ventral teeth of thecal margin; h: anterior process of theca; i: posterior process of theca).