Linnavuuri (1979) erected the leafhopper subfamily Mukariinae, in consequence of raising Mukariini, a tribe of Nirvaninae, to superior rank. This subfamily is small one of in the family Cicadellidae (Hemiptera). Until to now, 5 genera and 37 species of Mukariinae were described in the world, Mukaria Distant, 1908 (10 species), Buloria Distant 1908 (1 species), Mohunia Distant, 1908 (7 species), Pseudobalbillus Jacobi (18 species), and Bassareus Linnavuori (2 species), among which 4 genera 11 species, namely Mukaria Distant (6 species), Mohunia Distan (3 species), Neomohunia Chen et Li (1 species) and Paramohunia Chen et Li (1 species) were described from China (Chen et al., 2007; Distant, 1908; Government of the Southeast Guizhou Miao and Dong Autonomous Prefecture, 1989; Hayashi, 1996; Kuoh et al., 1983; Li et al., 1999). In the present paper, 1 new genus, Pseudomohunia gen. nov., and 1 new species P. nigrifascia sp. nov., are described and illustrated. The type specimens are deposited in the Institute of Entomology, Guizhou University.

1 Pseudomohunia gen. nov.

Type species: Pseudomohunia nigrifascia sp. nov..

Description. Medium-sized, delicate leafhoppers; pale yellow to white with blackish brown stripe dorsally.

Head. Head (Fig. 1-1) moderately produced, rounded to face, without marginal carina; crown slightly convex, median length subequal width between eyes, ocelli on crown, separated from anterad of eyes and near margin; coronal suture visible only at basal 1/3; apex of head in profile truncate (Fig. 1-2); frontoclypeus strongly convex at base, depressed apical-medially, without median carina; clypellus with lateral margins parallel; lorum broad (Fig. 1-3).

Thorax. Pronotum (Fig. 1-1) broad, longer than head, with lateral margins divergent posterad, posterior width greater than that of head including eyes; anterior margin weakly produced, posterior margin weakly angulately emarginated; mesonotum and scutellum (Fig. 1-1) wider than long, scutoscutellar sulcus slightly curving, short, not reaching to lateral margins; forewing (Fig. 1-4) with 4 apical cells, venation obscure except near apex; vein M₃₊₄ originating from inner anteapical cell, converging toward middle of appendix; appendix well developed; hindwing with 4 closed apical cells, veins R₄₊₅ and M₁₊₂ constalked basally; hind femur macrosetal formula 2+2+1.

Male genitalia. Male pygofer (Fig. 1-5) in profile with dorsal margin and ventral margin parallel, with macrosetae dorsocaudally, caudodorsal margin with 1 process inside; valve near broad triangular; subgenital plates (Fig. 1-6) near sharply triangular, with several rows macrosetae at lateral margin; aedeagus (Fig. 1-7) simple, dorsoatrium short, with 2 gonopores at apex; connective (Fig. 1-7) Y-shaped, fused with aedeagus; styles (Fig. 1-9) triangular basally, tapering apically.

Host plant. Chimonobambusa angustfolia C. D. Chu et C. S. Chao.

Distribution. Guizhou Province, China.

Remarks. Based on the structure of face, apical veins of forewing and hindwing, hind femur macrosetal formula, subgenital plates and styles, this genus belongs to the subfamily Mukariinae. It is closely related to Mohunia Distant, but can be distinguished from the latter by the forewing with 4 apical cells, the aedeagus with 2 gonopores, dorsoatrium short, and the connective Y-shaped.

Etymology. This genus name, which is feminine, is a combination of "pseud" (phony) and "mohunia" (name of the related genus), meaning that this genus resembles genus Mohunia.

2 Pseudomohunia nigrifascia sp. nov.

Body legth (incl.tegm.): ♂ 4.7~4.8 mm, ♀ 4.8~5.0 mm.

General color yellowish white. Head and thorax (Fig. 1-1) with a blackish brown longitudinal band from apex of crown to end of scutellum; forewing (Fig. 1-4) with clavus along outer margin, extending to apical cells, dark brown, in 4^th apical cell with a small blackish brown marking.

Structural characters as in generic description. Crown (Fig. 1-1) longer in median line than width between eyes about 1.10:1; pronotum (Fig. 1-1) longer than crown in median line about 1.17:1; mesonotum and scetullum with basal width greater than median length about 1.70:1.

Male genitalia. Male pygofer (Fig. 1-5) in profile with dorsal margin and ventral margin parallel, with macrosetae dorsocaudally, caudodorsal margin with 1 process inside, comb-shaped; valve near broad triangular; subgenital plates (Fig. 1-6) near sharply triangular, with 3 rows macrosetae at lateral margin; aedeagus (Fig. 1-7) simple, bifurcated basally, with 2 gonopores at apex; connective (Fig. 1-7) Y-shaped, fused with aedeagus; styles (Fig. 1-9) triangular basally, tapering apically.

Holotype ♂, paratypes 1♂, 3♀♀, Leigongshan National Nature Reserve (26°20′N, 108°10′E), Guizhou Province, 13-14 Aug. 2005, coll. Li Zizhong and Zhang Bin.

Host plant. Chimonobambusa angustfolia C. D. Chu et C. S. Chao.

Etymology. This specific name is derived from the Latin word "nigr" (dark, black) plus "fascia" (stripe), which refers to the dark brown stripe distributing from the apex of crown to the end of forewing.