Neosymplana Chen & Gong, gen. n.

Type species. Neosymplana vittatum sp. n., here designated.

Description. Head with eyes narrower than width of pronotum. Vertex (Fig. 5) with anterior margin strongly produced roundly, posterior margin nearly right-angularly concave, disc slightly depressed. Frons (Fig. 6) with length in midline distinctly longer than maximum width, median carina and sublateral carinae complete, widest at level of second segment of antennae. Clypeus (Fig. 6) with median carinae distinct. Rostrum long, reaching mesotrochanters. Ocelli present. Vertex and frons joint at acute angle in lateral view. Pronotum (Fig. 5) with length in midline shorter than length behind eyes, with anterior margin roundly convex, posterior margin broadly concave; lateral carinae distinct. Mesonotum (Fig. 5) with median carina obscure, lateral carinae weak and subparallel. Forewing (Fig. 8) subhyaline, relatively narrow; veins distinct, claval suture present, ScP+R and M united in basal sixth, ScP+R forking close to nodal transverse line; MP with three branches after nodal line; CuA with two branches after nodal line; Pcu uniting A 1 at basal 1/2 of clavus; four subapical cells and eight apical cells. Hindwing (Fig. 9) hyaline, as long as forewing, with 3 lobes, cubital cleft weakly, anal cleft deep; ScP and RP single, MP and CuA each with 2 branches. Legs relatively long, hind tibia with single lateral spine medially and with 7 apical spines.

Male genitalia. Anal segment (Figs 10–12) bifurcated in dorsal view, with two stick-like processes. Pygofer (Fig. 11) in lateral view with dorsal margin distinctly shorter than ventral margin, latero-posterior margin strongly concave, medioventral plate (Figs 13, 15) broad and short. Genital style (Fig. 14) long and narrow, dorsal margin with apical half dorsally uplifted. Aedeagus (Figs 16–17) strongly curved, fused with connective, both forming Cshaped, with a pair of long spines beside of aedeagal shaft.

Remarks. This new genus is closely related to Symplana, but differs in: 1) vertex tilted down (vertex tilted up in Symplana); 2) anal segment bifurcated, with paired stick-like processes (anal segment simple in Symplana); 3) pygofer with medioventral plate (without medioventral plate in Symplana).

Etymology. The genus name is a combination of the Latin words “ neo (means new)” and “ Symplana (similar genus)”, related to the similar appearance to the genus Symplana . Gender masculine.

Host plant. Bamboo.

Distribution. Southwestern China (Yunnan).