Dicerapanorpa hualongshana, 2019

DICERAPANORPA HUALONGSHANA HU & HUA View in CoL SP. NOV.

( FIGS 3M, 4M, 5M, 6N, 12, 13)

lsid:zoobank.org:act: 81200120-41F3-43F6-94B2- AD9AA32EA0FD

Type material

Holotype: CHINA: ♂, Hualongshan Mountain (32.01°N, 109.36°E), 2100 m, Pingli County, Shaanxi, 12 July 2015, leg. Bao-Zhen Hua. GoogleMaps

Paratypes: Seven ♀, Mount Nangongshan (32.29°N, 109.06°E), Langao County, Shaanxi, 11 June 2013, leg. Jing Chen and Qin-Xiao Chen GoogleMaps ; Five ♂, three ♀, Hualongshan Mountain , Pingli County, Shaanxi, 24 June 2018, leg. Kai Gao, Yuan Hua and Yu-Ru Yang; one ♂, 21 ♀, Mount Nangongshan , Langao County, Shaanxi, 26 June 2018, leg. Yuan Hua and Kai Gao ; four ♂, ten ♀, Chengkou County (31.84°N, 109.107°E), Chongqing, 20 June 2018, leg. Kai Gao. GoogleMaps

Etymology

The specific epithet refers to the type locality, Hualongshan Mountain.

Diagnosis

This new species resembles D. shennongensis , but can be readily differentiated from the latter by the following characters: (1) mesal branches of male parameres convergent distally (cf. parallel); and (2) main plate of female medigynium broad, posterior arms short (cf. slender and long).

Description

Head: Head mostly yellow. Vertex yellowish. Ocellar triangle black. Rostrum yellow, without distinct black longitudinal stripes.Antenna blackish brown ( Fig. 12A, B).

Thorax: Pro-, meso- and metanotum yellowish, bearing black stout setae anteriorly and two black longitudinal stripes laterally. Pleura pale yellow. Legs yellowish brown ( Fig. 12A, B).

Wings: Male holotype: forewing length 15.8 mm, width 4.2 mm, yellowish with dark brown markings; apical band enclosing a large hyaline window; pterostigmal band with a broad basal branch and a reduced separated distal branch; basal band extremely reduced; marginal and basal spots indistinct; hindwing length 13.9 mm, width 4.0 mm, with more degenerated markings ( Fig. 12A). Female: forewing length 14.8–17.2 mm, width 4.0– 4.9 mm, basal band reduced, extending from vein R 1 to 1A; pterostigma and apical bands complete; marginal spot extending from vein R 1 to R 4 + 5. Hindwing length 13.8–16.1 mm, width 4.0– 4.8 mm, similar to forewing in general appearance ( Fig. 12B).

Abdomen: T1–T 5 pale yellow, with two black longitudinal stripes laterally ( Fig. 12A, B). Male: notal organ of T3 well developed, bearing thick setae on posterior margin ( Fig. 4M); T6 yellowish brown, with a pair of digitate anal horns posteriorly ( Fig. 3M); abdominal segment VII (A7) yellowish brown, elongate, constricted basally and abruptly dilated distally; A8 similar to A7, but much thinner apically ( Fig. 12A). Female: abdominal segments gradually narrowed distally ( Fig. 12B).

Male genitalia: Genital bulb yellowish brown, elliptic. Epandrium broad at base, gradually narrowing toward apex, with a deep U-shaped terminal emargination ( Fig. 12C). Hypovalve not reaching apex of gonocoxite, with long bristles along inner margin ( Figs 12D, 13C). Gonostylus shorter than gonocoxite, with a developed pentagon-shaped basal process and a small, sharp median tooth ( Fig. 12C, D). Parameres trifurcate: basal branches short, nearly parallel; mesal branch elongate, curved inward at apex, reaching basal process of gonostylus; lateral branch incurved, reaching or exceeding apex of ventral valve. Ventral valves of aedeagus long, slender; dorsal valves sclerotized, not reaching apex of gonocoxite ( Fig. 12D).

Female genitalia: Subgenital plate ovoid, terminating in a ligulate process, covered with long bristles caudally ( Fig. 12E). Main plate of female medigynium broad, nearly rectangular ( Fig. 12F). Posterior arms shorter than main plate. Axis concealed in main plate, slightly protruding beyond main plate at apex.

Remarks

Different individuals of this species exhibit variations in male aedeagus, paramere ( Figs 4M, 13A, B), female subgenital plate ( Fig. 13D, E) and medigynium ( Figs 6N, 13F, G).