Neosymplana Chen & Gong, 2020

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 View FIGURES 5–17 ) with anterior margin strongly produced roundly, posterior margin nearly right-angularly concave, disc slightly depressed. Frons ( Fig. 6 View FIGURES 5–17 ) 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 View FIGURES 5–17 ) with median carinae distinct. Rostrum long, reaching mesotrochanters. Ocelli present. Vertex and frons joint at acute angle in lateral view. Pronotum ( Fig. 5 View FIGURES 5–17 ) with length in midline shorter than length behind eyes, with anterior margin roundly convex, posterior margin broadly concave; lateral carinae distinct. Mesonotum ( Fig. 5 View FIGURES 5–17 ) with median carina obscure, lateral carinae weak and subparallel. Forewing ( Fig. 8 View FIGURES 5–17 ) 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 View FIGURES 5–17 ) 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 View FIGURES 5–17 ) bifurcated in dorsal view, with two stick-like processes. Pygofer ( Fig. 11 View FIGURES 5–17 ) in lateral view with dorsal margin distinctly shorter than ventral margin, latero-posterior margin strongly concave, medioventral plate ( Figs 13, 15 View FIGURES 5–17 ) broad and short. Genital style ( Fig. 14 View FIGURES 5–17 ) long and narrow, dorsal margin with apical half dorsally uplifted. Aedeagus ( Figs 16–17 View FIGURES 5–17 ) 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).