Cerapanorpa yanggashana sp. nov.

urn:lsid:zoobank.org:act: 3D6DAD98-3214-47D2-A9C9-CFAB08E58F80

Figs 11–12

Diagnosis

The new species can be readily distinguished from its congeners by the following characters: rostrum uniformly brownish black (Fig. 11C); hypovalves slender and prominently elongate, extending beyond the apex of gonocoxite (Fig. 12A); parameres columnar, bearing a column of long golden spines along dorsal side and a brown stout spine apically (Fig. 12A, E); the main plate of medigynium broad at basal half, gradually tapering distally, slightly infolded dorsad (Fig. 12F); ventral basal plates fused into membrane enfolding the main plate, covering almost two-thirds of the main plate in both ventral and dorsal views (Fig. 12F).

Etymology

The specific epithet refers to its type locality, Yanggashan, Wenxian County, Gansu Province.

Type material

Holotype CHINA • ♂; Gansu Province, Wenxian County, Mount Yanggashan; 32°51′41′′ N, 104°33′13′′ E; 2100 m a.s.l.; 7 Jun. 2018; Kai Gao & Yu-Ru Yang leg.; NWAU.

Paratypes CHINA • 7 ♂♂, 3 ♀♀; same data as for holotype; NWAU .

Description

Male

HEAD. Frons, vertex and occiput entirely brownish black. Rostrum uniformly brownish black, mandibles, labial and maxillary palps dark brown (Fig. 11C). Antennae filiform, brownish black, with 38–42 flagellomeres.

THORAX. Pronotum light brown, with 10–12 black setae along its anterior margin; Meso- and metanotum dark brown (Fig. 11D). Pleura pale and legs ivory, tibia with a pair of apical spurs; tarsi darkened toward apices. Forewing length 12.2–13.0 mm, width 3.0– 3.3 mm. Wing membrane hyaline and almost without marking, pterostigmal band pale. Hindwing length 11.8–12.1 mm, width 2.9–3.2 mm, similar to forewings in pattern (Fig. 11A).

ABDOMEN. T1–T5 brownish black, the corresponding sterna slightly pale. Notal organ of T3 semicircular (Fig. 11E). T4 bearing a small barb-shaped postnotal organ near the anterior margin. T6 entirely brownish black, with a yellow finger-like anal horn on posterior margin. A7 and A8 yellowish and elongate, with basal half slightly constricted and gradually thickening toward the distal portion (Fig. 11E).

GENITALIA. Genital bulb globular and yellowish orange (Fig. 12 A–B). Epandrium broad at base, gradually narrowing toward apex, with a nearly trapezoidal emargination distally (Fig. 12B). A pair of parallel hypovalves slender and dramatically elongate, extending beyond the apex of gonocoxite, with long bristles along inner margins (Fig. 12A). Gonocoxite bearing a bundle of long setae on inner portion of ventral apex, and two prominently subtriangular subapical teeth on ventro-distal apex (Fig. 12A). Gonostylus much shorter than gonocoxite, medially curved, with a large basal process and an indistinct median tooth on inner margin (Fig. 12A). Parameres columnar, slightly curved dorsal, extending to base of gonostylus, and bearing a column of long golden spines along dorsal side and a brown stout spine apically (Fig. 12A, E). Dorsal valves of aedeagus short, curved ventrally, with distal part pediform (Fig. 12 C–D); ventral valves membranous; lateral process auriform and prominent (Fig. 12 C–D).

Female

HEAD, THORAX AND ABDOMEN. Similar to males in coloration and patterns. Forewing length 13.0– 13.4 mm, width 3.1–3.4 mm, markings and venations similar to male; hindwing length 12.8–13.1 mm, width 3.0– 3.2 mm, similar to forewing (Fig. 11B).

GENITALIA. Subgenital plate long elliptical and not pointed, ended with a small V-shaped incision, bearing long setae on distal portion (Fig. 12G). Medigynium weakly sclerotized; main plate broad in basal half, gradually narrowing distally, slightly infolded dorsad. Paired posterior arms tapering apically, forming a deep U-shaped emargination (Fig. 12F). Ventral basal plates translucent, fused into membrane enfolding the main plate, covering approximately two-thirds of main plate in both ventral and dorsal side. Paired dorsal basal plates large, semicircular and poorly sclerotized. Axis elongate and bifurcate, slightly extending beyond the main plate (Fig. 12F).

Distribution

Gansu Province, China.

Remarks

Cerapanorpa yanggashana sp. nov. resembles C. liupanshana Gao, Ma & Hua, 2016 in appearance from the Liupan Mountains, Ningxia, but is readily recognized from the latter by the distinct slender and elongate hypovalves, the specific shape of parameres and the foot-shaped dorsal valves of aedeagus.

Cerapanorpa yanggashana sp. nov. has a similar geographical distribution in southern Gansu to C. bonis (Cheng, 1949), which was described based only on a single female specimen. The male of C. bonis remains unknown to date. C. yanggashana differs from the latter by subgenital plate long elliptical and not pointed at apex; main plate of medigynium broad at basal half, and slightly infolded dorsad (cf. subgenital plate is pointed; main plate is slender).