Paratetricodes Zhang & Chen

Zhang, Zheng-Guang & Chen, Xiang-Sheng, 2010, Two new genera of the tribe Parahiraciini (Hemiptera: Fulgoromorpha: Issidae) from China, Zootaxa 2411, pp. 44-52 : 45-47

Paratetricodes Zhang & Chen , gen. nov.

( Figs 1–10 )

Type species. Paratetricodes sinensis Zhang & Chen , here designated.

Diagnosis. The genus is readily separated from others in the tribe Parahiraciini by metope ( Fig. 2 ) subrectangulate, median keel absent, with a hemispheroidal protuberance distad, lateral margins ridged, approximately parallel.

Description. Body length (from apex of coryphe to tip of forewing) 3 6.8 mm, Ƥ 8.7 mm.

Head and thorax. Coryphe ( Fig. 1 ) subquadrate, broader than long (1.6:1). Metope ( Fig. 2 ) subrectangulate, longer than widest (1.6:1), with a hemispheroidal protuberance distad, median keel absent, basal margin strongly excavate, lateral margins ridged, approximately parallel. Clypeus not in the same plate as metope, disc convex, median keel absent, frontoclypeal suture slightly impressed, rostrum attaining posttrochanters. Pronotum in middle line slightly longer than coryphe (2.0:1). Mesonotum subtriangular, in middle line slightly longer than pronotum (1.4:1). Forewings ( Fig. 4 ) with costal and sutural margins parallel, longer than widest (2.6:1), obtuse distally, longitudinal veins distinct, transverse veins absent, claval suture present, Cu1 simple to apex. Hindwings ( Fig. 5 ) larger than tegmina, with reticulated venation, margin deeply cleft in Cu, anal lobe absent. Fore femora and tibiae strongly flattened. Hind tibia with two lateral teeth near apex.

Male genitalia. Anal segment ( Fig. 16 ) subtriangular, expanding distally, apex with lobe-shaped process and turned down (in lateral view). Penis short and broad near middle. Genital styles subtriangular, with strongly process in dorsal margin, caudo-dorsal angle rounded. Aedeagus slightly curved in lateral view, with lateral hooks, curved, directed caudo-dorsalad.

Etymology. The genus name, which is masculine, is a combination of “para-” (similar to) and “ Tetricodes ” (name of the related genus), indicates the new genus is similar to the genus Tetricodes Fennah.

Host plant. Unknown.

Distribution. Southwest China (Guizhou, Guangxi) ( Fig. 21 ).

Remarks. This new genus is similar to Tetricodes , but differs in: (i) coryphe in dorsal view with anterior margin roundly concave, metope relatively narrow and long, 1.6 times longer in middle line than broad at widest part, lateral margins approximately parallel, with a hemispherical protuberance distad, which in profile distinctly extended out of lateral margins of metope, in dorsal view not visible, basal margin strongly excavate (in Tetricodes coryphe in dorsal view with anterior margin angularly convex medially, metope relatively broad and short, 1.3–1.4 times longer in middle line than broad at widest part, lateral margins shallowly convex laterad at apical third, with a hemispherical protuberance at basal half, which in profile slightly extended out of lateral margins of metope, in dorsal view visible, basal margin slightly excavate); (ii) fore femora and tibiae strongly flattened (in Tetricodes fore femora and tibiae normal not flattened); (iii) aedeagus with long lateral hooks near middle, genital styles with dorsal process larger, longer than broad of genital style body (in Tetricodes without any lateral hooks in aedeagus, genital styles with dorsal process small, shorter than broad of genital style body).

Figures

FIGURE 21. Geographic distribution of Paratetricodes and Fusiissus species in China: P. sinensis (˔); F. frontomaculatus (․).

FIGURES 1 – 10. Paratetricodes sinensis. (1) Head and thorax, dorsal view; (2) Metope; (3) Head, lateral view; (4) Forewing; (5) Hindwing; (6) Male genitalia, lateral view; (7) Anal segment, dorsal view; (8) Genital style, lateral view; (9) Aedeagus, lateral view; (10) Aedeagus, ventral view. Scale bars = 0.5 mm (figs 6 – 10), 1.0 mm (figs 1 – 5)

FIGURES 11 – 20. Fusiissus frontomaculatus. (11) Head and thorax, dorsal view; (12) Metope; (13) Forewing; (14) Hindwing; (15) Male genitalia, lateral view; (16) Anal segment, dorsal view; (17) Aedeagus, lateral view; (18) Aedeagus, ventral view; (19) Aedeagus, dorsal view; (20) Genital style, lateral view. Scale bars = 0.5 mm (figs 15 – 20), 1.0 mm (figs 11 – 14)