Thagria irregularis Fan & Dai sp. nov.

(Figs. 119–129)

Description. Body length of male 7.0–7.2 mm, female unknown.

Slender, medium sized species (Fig. 119). Crown light yellow-green, midline deep color, coronal suture brown; ocelli and eyes dark brown (Fig. 121). Face with clypeus and clypellus yellow, central area of clypeus and remainder of face light yellow (Fig. 122). Pronotum brown, covered with light brown nubs (Fig. 121). Mesonotum brown (Fig. 121). Forewing yellowish brown, with irregular dark patches, venation brown to black (Figs. 119, 120).

Head anteriorly arced, crown wider than eye width, extended about 1/3 median length anterad of eyes, coronal suture evident, about half of midline (Fig. 121). Face with clypeus long and broad, lateral margins slightly convex; clypellus basal half broad and swollen, distal half constricted (Fig. 122). Crown, pronotum and mesonotum midline ratio about 1:1:1.4 (Fig. 121). Forewing long, apex rounded, appendix narrowed (Figs. 119, 120).

Male genitalia. Pygofer in lateral view with paired stout processes on caudodorsal margin, end pointed (Fig. 123). Segment X ventral processes in dorsal view concealed, slender (Fig. 124). Subgenital plate with marginal long setae (Fig. 125). Dorsal connective Y-shaped, stem short, rami long, distally attached to base of segment X ventral processes by membrance (Fig. 124). Aedeagus symmetrical, reaching subapex of paraphysis, in lateral view curved dorsad (Figs. 126, 127); paraphysis asymmetrical, nearly triangular, apex attenuate, spinelike, lamellate process with irregular edge below, in lateral view slightly curved dorsad (Figs. 126, 127). Style long, reaching about midlength of paraphysis, narrowed to apex (Figs. 128, 129).

Type material. Holotype: ♂, CHINA: Guangxi, Yuanbaoshan, Alt. 580–1300 m, 14 July 2004, coll. Yang Maofa (GUGC). Paratype: ♂, same as the holotype (GUGC).

Etymology. The specific name is derived from Latin “ irregularis ”, referring to the irregular edge of the lamellate process on the paraphysis.

Remarks. This species is similar to T. apiculata Xu & Kuoh, 1998 in color shape, but it mainly differs in having the paraphysis with a spine-like process and a lamellate process distally (Fig. 126) compared to one spine in T. apiculata (Xu & Kuoh 1998: 312, Fig. 2 e, f).