Neopanorpa diancangshanensis, Wang & Hua, 2018

Wang, Meng & Hua, Bao-Zhen, 2018, High species diversity of the genus Neopanorpa (Mecoptera: Panorpidae) in Yunnan Province, China, Zootaxa 4483 (1) : -

Neopanorpa diancangshanensis sp. n.

( Figs. 10–11 )

LSID: urn: lsid: zoobank.org: act: 8C194F4F-5F7A-44ED-BB89-86B3AD19BC2B

Material examined. Holotype ♂, CHINA: Yunnan: Dali: Diancang Mountain (elev. 2200–2400 m), 08.vi.2014, leg. Chao Gao & Mei Liu, ME000079 ( NWAFU) . Paratypes 2♂ 2♀, same data as holotype, ME000080 – ME000083 ( NWAFU); 14♂ 19♀, CHINA: Yunnan: Shangri-La: Tiger Leaping Gorge (elev. 2400 m), 07.viii.2010, leg. Hao Xu, ME 000084 –ME000114 (NWAFU), 27636–27637 (ZMUG).

Diagnosis. Neopanorpa diancangshanensis sp. n. can be readily distinguished from its congeners by the following characters: (1) Vertex yellowish brown with longitudinal dark brown marking extending from ocellar triangle to occiput ( Fig. 10c ); (2) rostrum brown; (3) paramere with dorsal process greatly expanded into large subtriangular lobe ( Fig. 11b & c ); (4) female genital plate with well-developed posterior arms in two-thirds total length, proximal half straight, but apical half strongly curved dorsad ( Fig. 11e–g ).

Etymology. The specific name refers to the type locality, Diancang Mountain.

Description. Holotype ( Fig. 10a ).

Head ( Fig. 10c ). Vertex yellowish brown with longitudinal dark brown marking extending from ocellar triangle to occiput. Rostrum brown.

Thorax ( Fig. 10d ). Pronotum dark brown. Mesonotum yellow with brown narrow longitudinal median band extending to scutellum; metanotum with similar pattern.

Wings ( Fig. 10a ). Membrane hyaline with markings grayish brown; R2 bifurcated. In forewings, apical band incomplete, absent posteriorly; pterostigmal band broad at base, forked posteriorly, with apical branch interrupted as a small spot and basal branch interrupted as a large square spot; submedian band reduced to a spot on posterior margin. Hindwings similar to forewings, except for apical branch of pterostigmal band absent.

Abdomen. T1–T5 brown ( Fig. 10a & e ). Male A6 blackish brown narrowly bordered with yellowish brown posteriorly, A7–A8 yellowish brown ( Fig. 10f ). Notal organ expanded at base, elongated as a slender rod, extending caudad slightly less than half length of T4; T4 membranous anteriorly, bearing hirsute, flat post-notal organ ( Fig. 10e & f ).

Male genitalia. Yellowish brown. Hypandrium with a basal stalk and a pair of distal hypovalves, basal stalk half length of hypovalves; hypovalves slender, reaching caudal end of gonocoxite, twisted ventro-mesad and widely divergent at apices, bearing small hypandrial processes subbasally ( Fig. 10g ); in lateral aspect, hypovalve subelliptical apically, with hypandrial process a rounded projection ( Fig. 10i ). Epandrium tapering toward apex, abruptly narrowed and projected laterad at apical third, truncate apically ( Fig. 10h ), bearing a pair of rectangular epandrial lobes ( Fig. 10i ). Gonostylus brown, median tooth blunt; basal lobe cup-like, strongly concave, lining a row of dorsal setae ( Fig. 10j & k ). Ventral valves of aedeagus spatulate, widely divergent; dorsal valves broad and stout, concealed in ventral aspect ( Fig. 11a–c ). Paramere with long basal stalk, and bifurcated distally into ventral branch and dorsal branch; ventral branch short; dorsal branch very short, elongated dorso-laterad ( Fig. 11b ); lateral process broad, curved ventro-mesally, rounded apically, with small process on upper margin near apex ( Fig. 11b ); dorsal process greatly expanded into large lobe, subtriangular, projecting dorsad ( Fig. 11b & c ).

Female (Paratype) ( Fig. 10b ). Similar wing pattern and body coloration as in the male. TI–V blackish brown, A6–A9 dull yellowish brown ( Fig. 10b ). Subgenital plate elliptical with deep V-shaped emargination ( Fig. 11d ). Genital plate with axis broad, extending anteriorly beyond main plate for short length, forked proximally ( Fig. 11e– g ); posterior arms approximately two-thirds of total length, with proximal half straight and apical half conspicuously flexed dorsad in lateral aspect ( Fig. 11f ).

Measurements. Male (n = 10), forewing length 13.58 ± 0.70 mm, width 3.31 ± 0.18 mm; hindwing length 12.47 ± 0.71 mm, width 3.14 ± 0.15 mm. Female (n = 10), forewing length 13.66 ± 0.76 mm, width 3.36 ± 0.16 mm; hindwing length 12.63 ± 0.73 mm, width 3.18 ± 0.17 mm.

Variability. Some individuals with more extensive wing markings. In the forewings, apical band nearly complete with a small hyaline window near inner margin; pterostigmal band with apical branch and basal branch complete; submedian band reduced to spot on posterior margin. Hindwings with apical branch of pterostigmal band sometimes absent.

Remarks. This species resembles N. nielseni Byers, 1965 in wing markings, but is much smaller than the latter, and differs greatly in male genitalia and the female genital plate.

Figures

FIGURE 10. Neopanorpa diancangshanensis sp. n. (a) Male, dorsal view; (b) Female, dorsal view; (c) Head, frontal view; (d) Thorax, dorsal view; (e) Notal organ, dorsal view; (f) A4–A9, lateral view; (g) Male genital bulb, ventral view; (h) Male genital bulb, dorsal view; (i) Male epandrium and hypandrium, lateral view; (j) Gonostylus, ventral view; (k) Gonostylus, dorsal view. For abbreviations see legends of Figure 4. Scale bars: a–b = 5 mm; c– e, g–h = 0.5 mm; f = 1 mm; i–k = 0.25 mm.

FIGURE 11. Neopanorpa diancangshanensis sp. n. (a)–(c) Male aedeagal complex, ventral, lateral, and dorsal views; (d) Female subgenital plate, ventral view; (e)–(g) Female genital plate, ventral, lateral, and dorsal views. For abbreviations see legends of Figure 5. Scale bars: a–c = 0.2 mm; d–g = 0.1 mm.