Sinonissus longicaudus 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 longicaudus Chang & Chen sp. nov. Figs 7 , 8 , 51-60 , 61-69

Type material.

Holotype: ♂, China: Sichuan, Emeishan, Da’e Village (29°33'N, 103°24'E), 12-14 July 2010, Y-L Zheng leg.; paratypes: 1♂6♀♀, same data as holotype, Y-L Zheng and P Zhang leg.; 1♂1♀, Sichuan, Emeishan (29°30'N, 103°20'E), 3 Aug. 2012, H Li leg..

Diagnosis.

This species is similar to S. brunetus but can be distinguished from the latter by aedeagus ( Fig. 59 ) with long flagellate process in the middle in lateral view; phallobase ( Fig. 60 ) with ventral lobe triangular, apical margin extremely narrow, the basal part broad in ventral view.

Description.

Body length: male 3.38-3.63 mm, female 4.05-4.36 mm. Forewing: male 2.74-3.01 mm, female 3.27-3.62 mm.

Coloration. General color pale yellow to pale yellowish brown ( Figs 7 , 8 ). Vertex, pronotum and mesonotum ( Fig. 51 ) pale yellow. Eyes brown ( Fig. 52 ). Forewings ( Fig. 7 ) pale yellow or yellowish brown, longitudinal veins pale brown, transverse veins pale white. Legs yellow brown, with tips of spines on hind tibiae and tarsi black.

Head and thorax. Head ( Fig. 51 ) including eyes slightly narrower than pronotum (0.73: 1.00). Vertex ( Fig. 51 ) shorter in middle than the wide at base (1.00: 3.33). Frons ( Fig. 53 ) longer in middle than the widest breath (1.14: 1.00), median carina with the apical margin straight, nearly reaching to frontoclypeal suture. Clypeus triangular, with obscure median carina ( Fig. 53 ). Pronotum ( Fig. 51 ) with median carina obscure, lateral carina reaching to the posterior margin. Mesonotum ( Fig. 51 ) triangular, with median carina obvious. Forewings ( Fig. 54 ) elongate, 1.78 times as long as maximum breadth. Hindwings ( Fig. 55 ) reduced, small, with two veins. Hind tibiae each with two lateral spines, spinal formula of hind leg 8 –8– 2.

Male genitalia. Anal tube ( Fig. 57 ) irregularly pentagonal in dorsal view, widest in the middle, longer in midline than the width (1.41: 1.00), ventral margin nearly straight. Anal style sturdy and short, located at the base half of anal tube ( Fig. 57 ). Pygofer ( Fig. 56 ) with dorsal margin narrower than ventral margin. Genital styles ( Fig. 56 ) rectangular, dorsal margin and ventral margin nearly parallel. Capitulum of genital styles relatively short, irregularly triangular, neck obvious ( Fig. 58 ). Phallobase ( Figs 59 , 60 ) with dorsal lobe small horned cystiform process at apical part ( Fig. 59 : a), with relatively straight thin rod-like process in apical 1/4 ( Fig. 59 : b) in lateral view; lateral lobe splitting into two stout branches, the apical margin arced in ventral view; ventral lobe short, reaching to 5/6 of dorsal lobe in lateral view, in ventral view the apical part triangular, apical margin extremely narrow, the basal part broad ( Figs 59 : c, 60: c). Aedeagus with long flagellate process in the middle in lateral view, directed to dorso-anterior ( Fig. 59 : d).

Female genitalia ( Figs 61-69 ). Anal tube ( Fig. 64 ) nearly oval, longer in middle than the widest breadth (1.29: 1.00), the apical margin arced, with obvious membranous triangular protuberance, the widest near the basal 1/3. Anal style long, located at the basal third of anal tube ( Fig. 64 ). Anterior connective lamina of gonapophysis VIII with obviously sclerous triangular process in basal dorsal margin, with two lateral teeth bearing two or three keels in lateral group and two or three apical teeth ( Fig. 65 ). Posterior connective lamina of gonapophysis IX ( Figs 66 , 67 ) relatively narrow, median field asymmetrical, with tubercle-like prominences (medial dorsal process) ( Fig. 66 ); ventroposterior lobes bent at acute angle (posterior ventral lobes) ( Fig. 67 ). Gonoplacs ( Fig. 68 ) without keels. Hind margin of sternum VII median distinctly concave in ventral view ( Fig. 69 ).

Etymology.

This new species is named for the presence of one long flagellate process of aedeagus.

Host plant.

Unknown.

Distribution.

China (Sichuan).

Remarks.

This new species is distinguished from other species of this genus by: 1) aedeagus with long flagellate process in the middle in lateral view, directed to dorso-anterior ( Fig. 59 : d); 2) phallobase with dorsolateral lobe relatively straight, thin, rod-like process in lateral view ( Fig. 59 : b), ventral lobes triangular, apical margin extremely narrow, basal part broad in ventral view ( Fig. 60 : c); 3) female genitalia with posterior connective lamina of gonapophysis IX median field asymmetrical, with tubercle-like prominences ( Fig. 66 ).

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 51 - 60. Sinonissus longicaudus Chang & Chen, sp. nov. 51 head and thorax, dorsal view 52 head and thorax, lateral view 53 head, ventral view 54 forewing 55 hindwing 56 male genitalia, lateral view 57 anal segment, dorsal view 58 capitulum of genital styles, ventral view 59 phallobase and aedeagus, lateral view 60 phallobase and aedeagus, ventral view. Scale bars: 0.5 mm. Abbreviations: a, horned cystiform process; b, thin rod-like process; c, ventral lobe process; d, long flagellate process.

Figures 61 - 69. Female genitalia. Sinonissus longicaudus Chang & Chen, sp. nov. 61 dorsal view 62 lateral view 63 ventral view 64 anal segment, dorsal view 65 anterior connective lamina of gonapophysis VIII, lateral view 66 Posterior connective lamina of gonapophysis IX, dorsal view 67 Posterior connective lamina of gonapophysis IX, lateral view 68 Gonoplacs, lateral view 69 Sternum VII, ventral view. Scale bars: 0.5 mm.