16) Impatiophila medivittata Fu & Gao, sp. nov.

(Fig. 26; Pl. 2G)

Diagnosis. Abdominal tergites III −V each with broad, black caudal band protruded medially (Pl. 2G). Setae of middle row on 2nd costal section all heavy, peg-like setae, present beyond tip of R2+3. Hindleg tibia without black, apically blunt, stout spine at outer apex on underside. Male abdominal sternite VI somewhat quadrate, slightly longer than wide, nearly straight or slightly concave on posterior margin. Paramere with 6 sensilla arranged more sparsely distally (Fig. 26 E, F).

Description (♂). Head: Cibarium with 3 medial and 5−6 posterior sensilla per side.

Thorax (Pl. 2G): Postpronotum yellowish brown; scutum and scutellum glossy black; pleura yellowish brown to dark brown.

Wing (Pl. 2G) pale brown, paler proximally; veins dark brown. C1 setae 2, ventral one shorter and thinner. Haltere whitish yellow.

Abdomen: Sternites grayish yellow.

Male terminalia (Fig. 26 A −F): Epandrium posteriorly pubescent on dorsal 1/2, ventrally with ca. 14 long setae; caudoventral lobe prominent, somewhat pointed apically, with ca. 20 setae. Surstylus with 3 thick, long setae in addition to 2 stout, upturned prensiseta around to above caudodorsal corner, 5 apically converging prensisetae along distal margin and 2 short setae near ventral apex. Tenth sternite narrow, medially slightly projected on dorsal margin. Cercus pubescent in small patches on anterior portion, with ca. 25 long setae. Hypandrium slightly narrower than long, with distinct hypandrial apodeme on anteromedial margin. Gonopod somewhat triangular in lateral view. Paramere much longer than twice of width. Aedeagal basal process longer than 1/2 length of paramere.

Measurements: BL = 2.60 mm, ThL = 1.28 mm, WL = 2.65 mm, WW = 1.12 mm.

Indices: arb = 2−3/1, FW/HW = 0.44, ch/o = 0.12, prorb = 1.00, rcorb = 0.65, orbito = 0.93, vb = 0.41, dcl = 0.61, dcp = 0.47, sterno = 0.71, m-sterno = 0.82, sctl = 1.02, sctlp = 1.08, C = 2.89, 4c = 0.70, 4v = 1.40, 5x = 1.47, ac = 2.32, M = 0.38, C3F = 0.32.

Holotype. ♂ (#01558), Hesong Village, Xiding Town, Menghai County, Xishuangbanna District, Yunnan, China, 21°49′57′′N, 100°06′09′′E, 17.iv.2010, by sweeping above fallen trunks along waterside, J.J. Gao (KIZ).

Distribution. China (Yunnan).

Etymology. Referring to the dorsomedian (medius), dark, longitudinal vitta (vittatus) on abdominal tergites.