Dicerapanorpa lativalva, 2019

Hu, Gui-Lin, Gao, Kai, Wang, Ji-Shen, Hebert, Paul D. N. & Hua, Bao-Zhen, 2019, Molecular phylogeny and species delimitation of the genus Dicerapanorpa (Mecoptera: Panorpidae), Zoological Journal of the Linnean Society 187, pp. 1173-1195 : 1180-1187

DICERAPANORPA LATIVALVA HU & HUA SP. NOV.

( FIGS 3D, 4D, 5D, 6C, 10, 11)

lsid:zoobank.org:act: D8E5BA1A-D5FF-4F79-B543- E3D5AB367B6B

Type material

Holotype: CHINA: ♂, Menghuocheng (29.00°N, 102.30°E), 2600 m, Shimian County, Sichuan, 26 July 2016, leg. Lu Jiang.

Paratypes: Six ♂, five ♀, Menghuocheng and Liziping Nature Reserve , Shimian County, Sichuan, 22–26 July 2016, leg. Lu Jiang.

Etymology

The specific epithet is composed of the Latin latus, wide or broad, and valvae, valves or doors, referring to the broad dorsal valves of the male aedeagus.

Diagnosis

The new species resembles D. diceras , but can be distinguished from the latter by the following characters: (1) basal branch of male paramere slender and straight (cf. broadened basally); (2) lateral branches semicircular at basal two-thirds and parallel at distal one-third (cf. curved inward); (3) dorsal valve of male aedeagus broad, reaching basal process of gonostylus (cf. slender, short); and (4) main plate of female medigynium pear-shaped (cf. rounded).

Description

Head: Head yellow. Vertex pale yellow. Ocellar triangle black. Rostrum yellow with two black

CV1 CV2

lateral longitudinal stripes. Antenna blackish brown ( Figs 10, 11A, B).

Thorax: Pronotum yellow, with long black setae along anterior margin and a black longitudinal stripe along each side. Meso- and metanotum yellow, with two black longitudinal stripes laterally. Pleura yellow. Legs cream coloured, with tarsomeres blackish ( Figs 10, 11A, B).

Wings: Male holotype: forewing length 14.6 mm, width 3.7 mm; hindwing length 13.9 mm, width 3.5 mm; wing membrane hyaline, without distinct markings ( Fig. 11A). Female: forewing length 15.4–16.6 mm, width 3.8–4.1 mm; hindwing length 14.2–15.2 mm, width 3.8 – 4.1 mm; similar to male in general appearance ( Figs 10B, 11B).

Abdomen: Terga I–V (T1–T5) yellowish, with two black longitudinal lateral stripes; sterna and pleura yellow ( Figs 10, 11). Male: notal organ of T3 slightly prominent, bearing black setae posteriorly ( Fig. 4D); T6 yellowish brown, with a pair of anal horns on posterior margin ( Figs 3D, 11A); abdominal segments VII and III (A7–A8) brownish yellow, elongate, constricted at basal half and thickened at apical half, but A8 much thinner than A7 distally. Female: abdominal segments gradually narrowed distally ( Figs 10B, 11B).

Male genitalia: Genital bulb spherical, yellowish brown. Epandrium broad basally and narrowed distally, terminating with a shallow, broad, U-shaped emargination, extending over apex of gonocoxite ( Fig. 11C). Hypovalve greatly broadened toward apex and slightly curved inward distally, bearing long bristles along inner margin ( Figs 5D, 11D). Gonostylus smoothly curved, bearing a developed basal process and a sharp median tooth along inner margin. Parameres trifurcate: basal branches slender and straight, nearly parallel, reaching basal process of gonostylus; mesal branches divergent at base and convergent at apex, reaching median tooth of gonostylus; lateral branches semicircular at basal two-thirds and parallel at distal one-third. Ventral valves of aedeagus membranous and slender, reaching apex of gonocoxite; dorsal valves broadened and elongate, reaching basal process of gonostylus.

Female genitalia: Subgenital plate broad, trapezoidal, terminating in a ligulate process ( Fig. 11E). Medigynium elongate and pear-shaped, folded ventrally on each side. Main plate nearly rectangular, twice as long as posterior arms. Axis concealed in main plate, slightly protruding at apex ( Figs 6C, 11F).