Dasyhelea ludingensis Zhang & Yu

Dasyhelea ludingensis Zhang & Yu View in CoL

Dasyhelea ludingensis Zhang & Yu, 1996 View in CoL , 18(3): 202. Type locality: China: Sichuan, Luding .

Dasyhelea ( Prokempia) ludingensis View in CoL : Yu et al., 2005. Ceratopogonidae View in CoL of China ( Insecta View in CoL , Diptera ): 213.

3.1. Redescription

Diagnosis. Female: Body pale brown to dark brown. Head dark brown. Scutum dark brown uniformly ( Figure 2 A View FIGURE 2 ) or with yellow lines ( Figure 2 B View FIGURE 2 ), spots ( Figure 2 C View FIGURE 2 ) or areas ( Figure 2 D–F View FIGURE 2 ). Scutellum yellow-green, postscutellum pale brown. Halteres light brown, with white knob. Abdomen brown, membranes between sclerites and abdominal segments yellow. Legs light brown.

Description. Female: Eyes pubescent ( Figure 3 A View FIGURE 3 , 4 A–C View FIGURE 4 ), separated by less than 1 facet ( Figure 3 B View FIGURE 3 , 4 A, C View FIGURE 4 ). Frontal sclerite rhombic, with long processes ( Figure 3 B View FIGURE 3 , Figure 4 A View FIGURE 4 ). Antenna with 13 flagellomeres, without sculptured; flagellomeres cylindrical, with sensilla chaetica, sensilla trichodea and sensilla basiconica, terminal flagellomere without apical papilla ( Figure 3 A View FIGURE 3 , 4 D–F View FIGURE 4 ); AR 0.75–0.87 (0.80, n = 22). Apex of labrum with sensilla trichodea ( Figure 4 G View FIGURE 4 ). Maxillary palp with 5 segments ( Figure 3 C View FIGURE 3 ); segment 3 cylindrical, with 6–8 capitates sensillae scattered on the basal half surface ( Figure 4 H View FIGURE 4 ); segment 5 subcylindrical, with long setae ( Figure 4 I View FIGURE 4 ); PR 2.13–3.33 (2.87, n = 22). Clypeus with 3 pairs of setae ( Figure 3 C View FIGURE 3 ).

Thorax. Scutum dark brown uniformly ( Figure 2 A View FIGURE 2 ) or with yellow lines ( Figure 2 B View FIGURE 2 ), spots ( Figure 2 C View FIGURE 2 ) or areas ( Figure 2 D–F View FIGURE 2 ). Scutellum with 6–7 setae ( Figure 4 J View FIGURE 4 ). Wing ( Figure 3 D View FIGURE 3 ) membrane with microtrichia, macrotrichia especially on veins, distal portion and along wing margin; costa extending to about mid–length of wing; 1st radial cell completely obliterated, 2nd radial cell rectangular; wing length 0.69–0.88 (0.79, n = 22) mm, wing width 0.28–0.38 (0.34, n = 22) mm, CR 0.50–0.54 (0.52, n = 22). Legs light brown; tarsi with 5 tarsomeres, claws small, equal-sized, slightly curved inside, ( Figure 4 K View FIGURE 4 ); hind tibia with 5–7 terminal spines ( Figure 3 E View FIGURE 3 , Figure 4 L View FIGURE 4 ); prothoracic tarsal ratio 1.77–2.64 (1.99, n = 22); mesothoracic tarsal ratio 2.06–2.40 (2.26, n = 22); metathoracic tarsal ratio 1.97–2.41 (2.12, n = 22).

Abdomen. Brown. One ovoid spermatheca, measuring 27.50–55.00 (45.00, n = 22) μm×22.50–35.00 (30.00, n = 22) μm, with short and twisted neck and the subgenital plate arch-shaped. ( Figure 3 F View FIGURE 3 ). Cerci ovoid.

Male. Unknown

3.2. Distribution

China ( Beijing, Shanxi, Shandong, Henan, Shaanxi, Anhui, Jiangsu, Zhejiang, Jiangxi, Hunan, Hubei, Sichuan, Chongqing, Guizhou, Yunnan, Fujian, Taiwan, Guangdong, Guangxi, Hainan, Hong Kong).