Neopanorpa nielseni Byers, 1965

(Figs. 2c, 18)

Neopanorpa nielseni Byers, 1965: 723, figs. 54–59; Wang & Hua, 2017a: 33, fig. 1B

Material examined. 6♂ 5♀, CHINA: Yunnan: Yongde County: Dedang town (24°1′30″N, 99°15′15″E, elev. 1600 m), 24.viii.2014, leg . Ji-Shen Wang; 9♂ 15♀, CHINA: Yunnan: Yongde County: Tangli Mountain (24°01′17″N, 99°14′23″E, elev. 1400–2000 m), 26.vii.2015, leg . Ji-Shen Wang; 2♂ 4♀, CHINA: Yunnan Province: Ximeng County (elev. 1230 m), 30.iv.2016 .

Diagnosis. Neopanorpa nielseni can be readily distinguished from its congeners by the following characters: (1) In wing markings, apical band notched posteriorly; pterostigmal band broad, slightly touching apical band along costal margin, apical branch sometimes absent or interrupted, basal branch narrowly constricted at base; (2) hypovalves extending beyond median tooth of gonostylus, the outer edges strongly infolded dorsad and the folded edges subparallel in ventral aspect.

Description. Female (Fig. 2c). T1–T6 black, A7–A9 yellowish brown (Fig. 2c). Subgenital plate broadly oval-shaped with V-shaped emargination (Fig. 18d). Genital plate with main plate projected laterad; axis not extending anteriorly beyond main plate; posterior arms spatulate-like, twisted and constricted at base (Fig. 18e–g).

Measurements. Female (n = 5), forewing length 16.49 ± 0.37 mm, width 3.77 ± 0.15 mm; hindwing length 14.72 ± 0.32 mm, width 3.52 ± 0.14 mm.

Remarks. The female of N. nielseni is described and illustrated here for the first time. The structure of aedeagus is also illustrated in ventral, lateral, and dorsal aspects (Fig. 18a–c).