Thornburghiella xinjiangensis Wagner 2003

Thornburghiella xinjiangensis Wagner, 2003 Fig. 5 A – H Thornburghiella xinjiangensis Wagner, 2003: 110 Material examined. • 1 ♂, China, Inner Mongolia, Tongliao City, Ganqika Town, Horqin Left Rear Banner, Daqinggou National Nature Reserve, Headwaters of Daqinggou, 42°45'45"N, 122°12'14.33"E, 193 m a. s. l., 2014. VIII. 20, leg. Yan Li. • 1 ♂, China, Inner Mongolia, Tongliao City, Ganqika Town, Horqin Left Rear Banner, Daqinggou National Nature Reserve, Headwaters of Daqinggou, 42°45'45"N, 122°12'14.33"E, 193 m a. s. l., 2014. VIII. 27, leg. Li Shi. Redescription. Measurements in mm (N = 1). Male. Body length 2.1 mm. Wing length 3.1 mm, width 1.1 mm. Head width 0.52 mm, length 0.55 mm; vertex 0.16 mm. Head. (Fig. 5 C) about the same length as width; vertex about 0.308 times length of head; with a row of ocular setae. Eye bridge with 7 facet rows, separated by 3 facet diameters; interocular suture inverted, broadly V-shaped; frontal scar patch concentrated on the antennal socket and extended, but not reaching interocular suture. Antennae (Fig. 5 D) 14 segments, scape length 0.2 mm, about 2.22 times longer than wide, distally widened; pedicel rounded, about the same length as width; flagellomere 1 length 0.12 mm, bearing row of 6 long spines. The first to fourth spines from the base are nearly equal in length, 0.07 mm, the fifth and sixth spines length 0.11 mm, which is 1.57 times the length of the first to fourth spines. Flagellomeres 4–13 fusiform, swollen at middle and narrowed distally; flagellomere 14 long cylindrical with an extension at the distal half; ascoids short; length of antennae segments 1–14: 0.2: 0.06: 0.12: 0.06: 0.06: 0.06: 0.06: 0.05: 0.05: 0.05: 0.04: 0.04: 0.04: 0.07; Clypeus margin slightly flat, clypeus scar patch no more than half of clypeus. Palp segment proportions 1: 1.5: 1.75: 2.25 (44-60 - 62 - 70 in Wagner 2003). Thorax with brown allurement organs from the prothorax (Fig. 5 E), short-stalked in lateral view; epimeron, anepisternum and katepisternum smooth, anepimeron basal and medial half setae. Wing (Fig. 5 B) brown; vein R 5 situated below the apical angle of the wing; dark brown spots present at the terminal junctions of all veins (except Sc) with the wing margin; The medial fork and radial fork are situated in the mid-wing region, with the medial fork positioned slightly more basally, with the medial fork slightly separated and the radial fork complete. Terminalia. (Fig. 5 F – H) Ejaculatory apodeme length 0.36 mm, narrow, long, broad at apex. Aedeagus with broad apex, surrounded by a translucent sac-like membrane; hypandrium slender, band-shaped, widened medially. Gonocoxite with many scar patches at apex margin, length and width nearly equal; gonostyli cylindrical, apex sharply pointed, base with dense clusters of scar patches. Gonostyli 0.19 mm in length, 1.72 times the length of the gonocoxite. Epandrium rectangular, width 1.47 times the length, with scar patches near the base, 1 big pseudospiracular opening of epandrium; hypoproct tongue-shaped in posterior view, broad at the base and gradually narrowing towards the apex. Surstylus approximately oblong, length 0.24 mm in lateral view, base slightly widened, apex slender; from the proximal half to the apex with approximately 16–19 tenacula (indicating that the number of tenacula is not perfectly symmetrical on both sides), varying in length, relatively dispersed, and inclined towards the base of the surstylus, slender and sharp at the apex, subtranslucent, the longest about 0.12 mm, the shortest 0.05 mm. Distribution. China (Inner Mongolia, Xinjiang). Remarks. The examined specimens agree with several important diagnostic characteristics of the original description in Wagner (2003) of this species: eye bridge 7 rows; antennae 14 segments; flagellomere 1 bearing a row of 6 long spines; thorax with short-stalked allurement organs; and surstylus from the proximal half to the apex with approximately 16–19 tenacula. Only the palpal ratio shows minor variation. This represents the first record of the species from Inner Mongolia, China.