Dicerapanorpa zhengkuni Hu & Hua, 2020

Hu, Gui-Lin & Hua, Bao-Zhen, 2020, Review of the scorpionfly genus Dicerapanorpa Zhong & Hua (Mecoptera: Panorpidae), with descriptions of two new species, European Journal of Taxonomy 711 (711), pp. 1-13 : 6-9

Dicerapanorpa zhengkuni Hu & Hua sp. nov.

urn:lsid:zoobank.org:act:D002EF64-9B01-4A06-B46A-0514533684CF

Figs 4–5

Diagnosis

This new species can be readily differentiated from its congeners by the following features: wings dusky hyaline, pterostigmal band with broad basal branch, gradually narrowing toward posterior margin, apical band greatly reduced ( Fig. 4 A–B); male hypovalve greatly elongated, extending far beyond basal process of gonostylus ( Fig. 4H ); basal branches of male paramere extremely short, mesal branches semicircular basally and convergent apically, lateral branches curved to dorsal side basally ( Fig. 5 A–B); and main plate of female medigynium rounded, folded ventrally into a circular plate ( Fig. 5C ).

Etymology

The specific name is dedicated to Mr. Zheng-Kun Hu for his generous help to this study.

Type material

Holotype

CHINA – Guizhou Province • ♂; Jiangkou County, Fanjinshan Nature Reserve ; 27.91° N, 108.65° E; 2200 m a.s.l.; 5 Jun. 2018; Gui-Lin Hu leg.; NWAU.

Paratypes

CHINA – Guizhou Province • 13 ♂♂, 65 ♀ ♀; same data as for the holotype; Gui-Lin Hu & Ning Li leg.; NWAU • 2 ♂♂, 1 ♀; Leishan County, Leigongshan Nature Reserve ; 26.37° N, 108.17° E; 1600 m a.s.l.; 28 May 2018; Gui-Lin Hu and Ning Li leg.; NWAU .

Description

Male

HEAD. Head mostly yellow. Rostrum yellow with pair of blackish lateral longitudinal stripes. Maxillary and labial palps yellowish brown, distal segment dark brown. Antenna black. Ocellar triangle black ( Fig. 4A, C ).

THORAX. Pronotum yellow with several stout setae along anterior margin and two black longitudinal stripes on lateral sides. Meso- and metanotum yellow, with black longitudinal stripe along each side. Pleura pale yellow. Legs brown with tarsomere darkening toward apex ( Fig. 4A ).

WINGS. Forewing length 15.0 mm, width 4.0 mm. Wing dusky hyaline with markings greatly reduced. Hindwing length 13.9 mm, width 3.9 mm, similar to forewing in color and pattern ( Fig. 4A ).

ABDOMEN. T1–T5 yellowish with two black longitudinal stripes laterally. Sterna and pleura yellow. Notal organ on T3 semicircular, prominent, bearing numerous setae posteriorly. Post-notal organ on T4 short, hook-shaped, protruding forward ( Fig. 4D ). A6 uniformly yellowish brown, with pair of parallel finger-like anal horns on posterior margin ( Fig. 4E ). A7 elongated, constricted at basal half and abruptly dilated at distal half. A8 similar to A7, but gradually broadened distally ( Fig. 4F ).

GENITALIA. Genital bulb ovoid, yellowish brown. Epandrium broad basally, tapering toward apex, with deep broad U-shaped terminal emargination between two parallel digital processes, almost reaching median tooth of gonostylus ( Fig. 4G ). Hypovalve greatly elongated, broad, with long bristles along inner margin, extending far beyond basal process of gonostylus ( Fig. 4H ). Gonostylus shorter than gonocoxite, bearing well-developed basal process and subtriangular median tooth ( Figs 4H , 5A ). Paramere trifurcated: basal branches very short, pointed; mesal branches elongated, curved convergently at apex, extending to median tooth of gonostylus; lateral branches sinuated to dorsal side basally, parallel apically, exceeding basal process of gonostylus. Aedeagus with paired ventral and dorsal valves: ventral valves short, narrow; dorsal valves sclerotized, separated distally, nearly reaching basal process of gonostylus ( Figs 4H , 5B ).

Female

HEAD, THORAX AND ABDOMEN. Similar to males in general appearance. Wing dusky hyaline, pterostigmal band with broad basal branch and reduced distal branch, extending to vein M 4; apical band grayish brown, greatly reduced, discontinuous. Forewing length 15.8–16.9 mm, width 3.9–4.5 mm; hindwing length 14.5–15.2 mm, width 3.9–4.3 mm ( Fig. 4B ).

GENITALIA. Subgenital plate ovoid, gradually tapering toward apex, terminating in truncated ligulate process, covered with long bristles caudally ( Fig. 4I ). Medigynium with main plate strongly sclerotized and ovoid, folded ventrally into round plate. Posterior arms smoothly curved inward, shorter than main plate. Axis almost entirely concealed in main plate, slightly pointed apically ( Figs 4J , 5C ).

Distribution

Wuling and Miaoling Mountains, Guizhou Province, China ( Fig. 1 ).

Figures

Fig. 4. Dicerapanorpa zhengkuni sp. nov. A. Ƌ, holotype, dorsal view, NWAU. B. ♀, paratype, dorsal view, NWAU. C. Head, frontal view. D. Ƌ, abdominal segments III and IV, showing the notal organ, dorsal view. E. Anal horns, dorsal view. F. Ƌ, A6–A8, lateral view. G–H. Ƌ, genital bulb in dorsal and ventral views, respectively. I. ♀, subgenital plate, ventral view. J. ♀, medigynium, ventral view. Scale bars: A–B = 5.0 mm; C–F = 0.5 mm; G–J = 0.2 mm.

Fig. 5. Scanning electron micrographs of genitalia of Dicerapanorpa zhengkuni sp. nov. A. Ƌ, genitalia in ventral view, with hypandrium removed. B. Magnification of A. C. ♀, medigynium, ventral view. Scale bars: A = 0.5 mm; B–C = 0.1 mm.

Fig. 1. Geographical distribution of Dicerapanorpa Zhong & Hua, 2013. The white dots represent the type locality of D. bifurcata sp. nov., the white asterisks indicate the type locality of D. zhengkuni sp. nov., and the red dots represent the distribution of the known species of Dicerapanorpa.