Sinonissus daozhenensis Chang & Chen

Chang, Zhi-Min, Yang, Lin, Long, Jian-Kun & Chen, Xiang-Sheng, 2019, Three new species of the planthopper genus Sinonissus Wang, Shi & Bourgoin, 2018 from southwest China (Hemiptera, Fulgoromorpha, Issidae), ZooKeys 870, pp. 117-135 : 117

Sinonissus daozhenensis Chang & Chen sp. nov. Figs 3 , 4 , 13-22 , 23-31

Type material.

Holotype: ♂, China: Guizhou, Daozhen County, Sanqiao Town (29°03'N, 107°30'E, 1300-1600 m), 22-24 May 2004, B Zhang and P Xu leg.; paratypes: 3♀♀, same data as holotype; 1♂, Guizhou, Daozhen County, Sanqiao Town (29°03'N, 107°30'E, 1500 m), 23 May 2004, X-S Chen leg.; 2♀♀, Guizhou, Daozhen County, Dashahe National Nature Reserve (26°38'N, 108°03'E, 600-700 m), 25-27 May 2004, B Zhang and P Xu leg.; 1♀, Guizhou, Daozhen County, Sanqiao Town (29°03'N, 107°30'E, 600-900 m), 16 Sept. 2005, Q-Z Song leg..

Diagnosis.

This species is similar to S. brunetus , but it differs from the latter by phallobase with ventral lobe with lobe-like process near middle in lateral view ( Fig. 21 : a); aedeagus with long flexuous process near middle in lateral view ( Fig. 21 : b); posterior connective lamina of gonapophysis IX with median field with symmetrical ear-shaped prominences ( Fig. 28 ).

Description.

Body length: male 3.85-4.04 mm, female 4.14-4.4 mm. Forewing: male 3.27-3.33 mm, female 3.38-3.54 mm.

Coloration. General color brown ( Figs 3 , 4 ). Vertex, pronotum and mesonotum ( Fig. 13 ) yellow brown. Eyes brown to black ( Fig. 14 ). Forewings ( Fig. 3 ) pale brown, longitudinal veins pale brown, transverse veins pale white. Hindwings brownish black. Legs yellow brown, with tips of spines on hind tibiae and tarsi black.

Head and thorax. Head ( Fig. 13 ) including eyes slightly narrower than pronotum (0.80: 1.00). Vertex ( Fig. 13 ) shorter in middle than the wide at base (1.00: 2.52). Frons ( Fig. 15 ) longer in midline than the widest breath (1.15: 1.00), median carina with the apical margin straight, nearly reaching to frontoclypeal suture. Clypeus ( Fig. 15 ) triangular, with distinct median carina. Pronotum ( Fig. 13 ) with median carina obscure, lateral carina reaching to the posterior margin. Mesonotum ( Fig. 13 ) triangular, with median carina obscure. Forewings ( Fig. 16 ) elongate, 1.67 times as long as maximum breadth. Hindwings ( Fig. 17 ) reduced, small, with one vein. Hind tibiae each with two lateral spines, spinal formula of hind leg (8-9) –(8-9)– 2.

Male genitalia. Anal tube ( Fig. 19 ) irregularly pentagonal in dorsal view, the widest in apical 1/3, longer in midline than the width (1.49: 1.00). Anal style ( Fig. 19 ) sturdy and long, located at the base 1/3 of anal tube. Pygofer ( Fig. 18 ) with dorsal margin slightly narrow than ventral margin, posterior margin convex in middle. Genital styles ( Fig. 18 ) relatively rectangular, dorsal margin and ventral margin nearly parallel. Capitulum of genital styles relative long, irregularly triangular, neck obvious ( Fig. 20 ). Phallobase ( Figs 21 , 22 ) with dorsal lobe cystiform at apical part, with stout rod-like process in apical half in lateral view; lateral lobe splitting into two stout branches; ventral lobe with one lobe-like process near middle in lateral view ( Fig. 21 : a), in ventral view, looking like three obvious lobes ( Fig. 22 : a), short, the apical margin arced convexly, reaching to 2/3 of dorsal lobe. Aedeagus with long flexuous process at middle in lateral view ( Figs 21 : b, 22: b).

Female genitalia ( Figs 23-31 ). Anal tube ( Fig. 26 ) nearly oval, longer in middle than the widest breadth (1.61: 1.00), the apical margin arced, with unobvious membranous triangular protuberance, the widest at the basal 1/2. Anal style long, located at the basal 1/4 of anal tube ( Fig. 26 ). Anterior connective lamina of gonapophysis VIII with obviously sclerous triangular process in basal dorsal margin, with three lateral teeth bearing three keels in lateral group and three apical teeth ( Fig. 27 ). Posterior connective lamina of gonapophysis IX ( Figs 28 , 29 ) relative broad, median field symmetrical, with two ear-shaped prominences (medial dorsal process) ( Fig. 28 ); ventroposterior lobes bent at obtuse angle (posterior ventral lobes) ( Fig. 29 ). Gonoplacs ( Fig. 30 ) without keels. Hind margin of sternum VII median slightly concaved in ventral view ( Fig. 31 ).

Etymology.

The new species is named for its collecting location in the Daozhen County (Guizhou Province).

Host plant.

Bamboo ( Qiongzhuea communis Hsueh & Yi).

Distribution.

China (Guizhou).

Remark.

This species is similar to S. brunetus , but it differs from the latter by: 1) the width of vertex ( Fig. 13 ) as long as 2.52 times in middle line; 2) phallobase with ventral lobe with lobe-like process near middle in lateral view, in ventral view ventral lobe tree lobes ( Figs 21 , 22 ); 3) aedeagus with long flexuous process near middle in lateral view ( Fig. 21 ); 4) female genitalia with posterior connective lamina of gonapophysis IX with median field with symmetrical ear-shaped prominences ( Fig. 28 ).

Figures

Figures 1 - 8. Habitus of Sinonissus species. 1, 2 Sinonissus brunetus Wang, Shi & Bourgoin, 2018 3, 4 Sinonissus daozhenensis Chang & Chen, sp. nov. 5, 6 Sinonissus hamulatus Chang & Chen, sp. nov. 7, 8 Sinonissus longicaudus Chang & Chen, sp. nov. Scale bars: 0.5 mm.

Figures 13 - 22. Sinonissus daozhenensis Chang & Chen, sp. nov. 13 head and thorax, dorsal view 14 head and thorax, lateral view 15 head, ventral view 16 forewing 17 hindwing 18 male genitalia, lateral view 19 anal segment, dorsal view 20 capitulum of genital styles, ventral view 21 phallobase and aedeagus, lateral view 22 phallobase and aedeagus, ventral view. Scale bars: 0.5 mm. Abbreviations: a, lobe-like process; b, long flexuous process.

Figures 23 - 31. Female genitalia. Sinonissus daozhenensis Chang & Chen, sp. nov. 23 dorsal view 24 lateral view 25 ventral view 26 anal segment, dorsal view 27 anterior connective lamina of gonapophysis VIII, lateral view 28 posterior connective lamina of gonapophysis IX, dorsal view 29 posterior connective lamina of gonapophysis IX, lateral view 30 gonoplacs, lateral view 31 sternum VII, ventral view. Scale bars: 0.5 mm. Abbreviations: lf, lateral field of posterior connective lamina of gonapophysis IX; mdp, medial dorsal process; mf, medial field of posterior connective lamina of gonapophysis IX; pvd, posterior ventral lobes; slf, sublateral field of posterior connective lamina of gonapophysis IX.