Favintiga polyacantha sp. nov.

(Figs. 1, 2)

Description. Body length (including tegmina), male: 4.8–5.1 mm, female: 5.2 mm.

Body color tawny. Crown (Fig. 1, A, B) yellow, extended to pronotum. Face (Fig. 1, C) yellowish. Scutellum (Fig. 1, A, B) with near middle and hind region yellow. Forewing (Fig. 1, A, D) with veins yellowish brown.

Face (Fig. 1, C) with transclypeal suture obscure, laterofrontal sutures (Fig. 1, C) reaching the corresponding ocelli. Fore femur with anteromedial (AM1) row of seta present, intercalary (IC) row with about 11 fine and long setae. Hind femur (Fig. 1, F) with apical setal formula 2+2+1.

Male pygofer side (Fig. 2, I) with apical margin broad, with numerous long macrosetae near caudal margin and several bristles subapically arising from ventral margin. Valve rectangular. Subgenital plate (Fig. 2, J) with lateral margin sharply constricted near the middle, with microsetae arising from basal to middle region; apical process long, digitate, strongly curved dorsad, inner margin with one or two short macrosetae. Style (Fig. 2, K) with apical process long and bent, beak-like, apex sharply constricted and pointed, lateral lobe prominent. Connective (Fig. 2, L, M) Y-shaped; stem about as long as anterolateral arms, with a long process subapically on ventral surface; process directed ventrolaterad and tapered apically, not bifurcated. Aedeagus (Fig. 2, M, N) situated dorsad of connective and linked to it by membrane from apex of stem; aedeagal shaft curved dorsad in lateral view, ventroposterior margin with a pair of long basal broad processes; process strikingly extending beyond apex of shaft, terminating in a long slim process; lateral margin of process with six to seven uneven long and slender processes near the middle, inner margin with three to four short dentate processes; dorsoatrium developed, apically membranous bifurcation; gonopore (Fig. 2, M, N) situated upper near middle on posterior surface. Anal tube (Fig. 2, I) short and stout, strongly sclerotized laterally and dorsally.

Female: First valvulae (Fig. 2, O, P) with sculpturing pattern strigate dorsally, reaching dorsal margin; second valvulae (Fig. 2, Q, R) with serrate teeth on apical 1/3 or more.

Material examined. Holotype: ♁, Hainan Province, Diaoluo Mountains, 18°40.440′N, 109°52.600′E, 494 m, 10-VIII-2010, Coll. Zheng Guo (NWAFU) . Paratypes: 1♁ 1♀, same data as the holotype .

Etymology. This new species epithet derives from the Latin combination “polyacantha” referring to the aedeagus with numerous similar spine-like processes.

Remarks. This species can be distinguished from other known species by the following unique characters: connective with a long process subapically on ventral surface,process not bifurcated;ventroposterior margin of aedeagal shaft with basal process extending well beyond apex of shaft, with several long or short similar spine-like processes.