Dicerapanorpa yangqichengi, Wang, 2022

Wang, Ji-Shen, 2022, New and little-known species of the genus Dicerapanorpa from northwestern Yunnan, China (Mecoptera: Panorpidae), Acta Entomologica Musei Nationalis Pragae 62 (1), pp. 1-13 : 10-12

Dicerapanorpa yangqichengi sp. nov.

( Figs 40–45 )

Type material. Hඈඅඈඍඒඉൾ: CHINA: Yඎඇඇൺඇ: ♁ ( DALU: CN- 21Di00025), Nujiang Lisu Autonomous Prefecture, Lushui City, Yaojiaping, 2327 m, 13.v.2021, leg. Qi-Cheng Yang. Pൺඋൺඍඒඉൾඌ: 1 ♁ 1 ♀ ( DALU: CN 21Di00026, CN 21Di00027), same data.

Diagnosis. This new species can be readily recognized by the combination of the following characters: 1) head yellow without black spots ( Fig. 40 ); 2) wings without markings ( Fig. 40 ); in males, 3) paramere bifurcated, lacking middle branch ( Fig. 43 ); and in females, 4) medigynium with posterior arms longer than main plate ( Fig. 45 ).

Description. Measurements (mm). Male (holotype): AtL 11.3, AbL 12.0, BL 16.5, FL 14.5, FW 3.5, HL 13.5, HW 3.4. Male (paratype):AtL 11.2, AbL 11.5, BL 15.0, FL 14.3, FW 3.3, HL 13.2, HW 3.2. Female (paratype): AtL 12.2, AbL 9.8, BL 15.0, FL 16.5, FW 3.8, HL 15.4, HW 3.8.

Male. Head ( Fig. 40 ). Yellow without spots on vertex. Ocellar triangle enclosed by black arrow-shaped pattern. Rostrum yellow with two black frontal stripes.

Thorax ( Fig. 40 ). Pronotum with five black thick setae along each side of anterior margin. Meso- and metanotum black laterally, with broad yellow median stripe.

Wings ( Fig. 40 ). Membrane hyaline, lacking markings. Pterostigma indistinct.

Abdomen ( Fig. 40 ). T2–T5 mostly yellow, dark brown laterally. A6 yellowish brown with pair of divergent anal horns on dorsal apex. A7 and A8 greatly constricted at base, yellowish brown.

Male genitalia ( Figs 42, 43 ). Genital bulb spherical. Epandrium broad, deeply emarginated terminally and forming pair of finger-like processes laterally. Hypandrium split into pair of long, stripe-like hypovalves. Hypovalve slightly broadening towards apex, with row of long stout bristles along inner margin. Gonostylus shorter than gonocoxites, with well-developed basal lobe and elongated, acute middle tooth. Paramere bifurcate: ventral branch long and straight; median branch lacking; dorsal branch slightly longer than twice length of ventral branch and slightly curved subapically. Ventral valves of aedeagus membranous with rounded apex; dorsal valves subacute.

Female. Habitus ( Fig. 41 ) similar to males. Subgenital plate ( Fig. 44 ) subtriangular, bearing long stout setae in apical portion. Medigynium ( Fig. 45 ) with main plate rounded; posterior arms extremely elongated, longer than main plate.

Etymology. The new species is named after the author’s friend Mr. Qi-Cheng Yang, who collected and donated the precious specimens. Noun in the genitive case.

Distribution. China: Yunnan (Lushui) ( Fig. 54 ).

Figs 46–53. Habitats and habitus of Dicerapanorpa spp. 46, 48, 50, 52 – habitats. 47, 49, 51, 53 – habitus. 47 – female. 49, 51, 53 – male. 46, 47 – D. nakhi Wang , sp. nov. 48, 49 – D. tenuis Hu, Wang & Hua, 2019 . 50, 51 – D. tjederi Carpenter, 1938 . 52, 53 – D. triclada ( Qian & Zhou, 2001) . Red arrows indicate positions where the specimens were caught.

Remarks. Dicerapanorpa bifurcata Hu & Hua, 2020 was thought to be the only member of Dicerapanorpa that bears bifurcated parameres in the male genitalia, while all its congeners bear trifurcated parameres; D. yangqichengi is the second known species which shares this trait.

Figures

Figs 40–45. Dicerapanorpa yangqichengi sp. nov. 40, 42, 43 – male. 41, 44, 45 – female. 40, 41 – habitus, dorsal view. 42 – genital bulb, ventral view. 43 – right paramere, ventral view. 44 – subgenital plate, ventral view. 45 – medigynium, ventral view.

Fig. 54. Distribution of Dicerapanorpa spp. in Yunnan, China.