Ishiharella falcata Yu, Yang & Dietrich, sp. nov.

(Figs 10–18, 46–47)

Type material. Holotype: 1 ♂, Sakon Nakhon, Phuphan NP, forest, ca. Huay Nam Pung Dam, Thailand, 16°54.713’N, 103°54.294’E, 289m, Malaise trap, 19–25 November 2006, Sailom Tongboonchai leg (QSBG); 1 ♂, Phetchabun Nam Nao NP Hell evergreen, Thailand, 16°44.371’N, 101°34.549’E, height: 834m, Malaise trap, 20– 27 November 2006, Leng Jantiep leg (IEGU).

Length: ♂ 3.90–3.91mm.

Crown orange with brown longitudinal depression beside gray eyes, two yellowish patches inside depression (Fig. 46). Face yellow, anteclypeus black apically (Fig. 47). Pronotum posteriorly with black median triangular patch (Fig. 46).Scutellum yellowish, apex black, scutoscutellar sulcus brownish (Fig. 46). Forewing brown; hind wing hyaline (Fig. 46). Legs yellowish except claws black (Fig. 47).

Male ventral abdominal apodemes reaching posterior margin of segment 3 (Fig. 10). Male pygofer with 1/2 anterior margin involuted with few setae (Figs 12, 13). Subgenital plates extended beyond pygofer in lateral view, fused in basal 2/3, with 10 macrosetae in one row and ca. 35 microsetae in 3 rows, base slightly wider than width subapically (Fig. 11). Paramere robust, bent at nearly right angle preapcally with apex slender and evenly tapered, apophysis with lamellar process in basal 1/3 and dorsal tooth more distad (Fig. 14). Aedeagal shaft short, broad, ovoid, strongly compressed, basal process distinctly asymmetrical, branched near midlength with right branch longer and curved more strongly mesad than left branch (Figs 15, 16). Anal tube process sinuate in ventral view (Fig. 18). Connective U-shaped (Fig. 17).

Etymology. The name of the new species is based on the falcate shape of the paramere apex.

Remarks. The new species is similar to I. iochoui Dworakowska and I. hastata Qin & Zhang in having the aedeagal process branched, but differs in the position of the branching and in the structure of the branches (Figs 15, 16). It can be distinguished from I. iochoui by the paramere with a lamellar process and apex unbranched (Fig. 14) and the more extensively fused subgenital plates (Fig. 11). It also differs from I. hastata in having the anal tube process apically extend in lateral view (Fig. 18) and the paramere not bifurcated (Fig. 14).