Andes bifidus Wang, Zhi & Chen sp. nov.

urn:lsid:zoobank.org:act: BC21B093-CE42-4E6E-BAA8-9A3A1FCAB00F

Figs 3–4

Diagnosis

The salient features of this new species include: middle part of apical margin of gonostyli deeply emarginate, forming two processes (Fig. 3G); ventral margin of periandrium with a sub-triangular process, apical left side of process with a short, small spinose process (Fig. 3K, M); basal ⅓ of right side of periandrium with a horn-like spinose process (Fig. 3J).

Etymology

The specific name is derived from the Latin adjective ‘ bifidus ’, referring to the deeply emarginate (bifurcate) apex of the gonostyli.

Type material

Holotype CHINA • ♂; Yunnan Province, Pingbian County, Dawei Mountain National Park; 22.9° N, 103.7° E; 18–20 Aug. 2017; Yan Zhi leg.; GUGC.

Paratypes CHINA • 55 ♂♂, 19 ♀♀; same collection data as for holotype but Yan Zhi, Qiang Luo, Nian Gong and Yong-Jin Sui leg.; GUGC .

Description

MEASUREMENTS. Body length: male 6.2–7.0 mm (N = 56), female 7.2–7.7 mm (N = 19).

COLORATION. General color yellowish brown (Fig. 3A–B). Eyes blackish brown, ocelli faint yellow, semi-translucent.Antenna, vertex, face and rostrum generally blackish brown. Pronotum and mesonotum blackish brown. Forewing semi-translucent, costal vein with a small dark brown spot; posterior to stigma, in centre of forewing and posterior to clavus with an irregular puce spot, respectively; basal and middle part of forewing with two inner oblique yellow stripes; apical half of forewing with brown patches. Stigma light brown. Veins yellowish brown. Tubercles brown. Hind tibiae yellowish brown. Ventral abdomen blackish brown.

HEAD AND THORAX. Vertex (Fig. 3A, C) 1.1× as long as wide; lateral carinae strongly elevated, median carina absent. Frons (Fig. 3D) 3.1× as long as wide. Pronotum (Fig. 3A, C) 1.7× as long as vertex; posterior margin forming an obtuse angle. Mesonotum 1.1× as long as pronotum and vertex combined. Forewing (Fig. 3B, E) 2.5 × as long as wide, with thirteen apical cells and seven subapical cells; RP with 4 branches; MP with 5 branches (MP 11, MP 12, MP 2, MP 3, and MP 4); fork MP 1 +MP 2 basad of fork MP 3 +MP 4. Metatibiotarsal formula 7/8, second segment of hind tarsus with three platellae.

MALE GENITALIA. Pygofer (Fig. 3F–G) in ventral view symmetrical; in lateral view, lateral lobes arcuate and extended caudally. Medioventral process rectangular (much wider than long). Anal segment (Fig. 3F, H) flat tubular, dorsal margin almost straight, ventral margin straight (parallel to dorsal margin), bending 90 degrees into apical lobe; 1.6× as long as wide in dorsal view; anal style strap-shaped, not extending beyond anal segment. Gonostyli (Fig. 3G, I) symmetrical in ventral view; in inner lateral view, base of dorsal margin concave, ventral margin with a small process, middle part of apical margin of gonostyli deeply emarginate, forming two processes: a large process around ventral margin, apical margin rounded; another small, around dorsal margin, apical margin pointed. Aedeagus (Fig. 3J–M) with six processes. Ventral margin of periandrium with a sub-triangular process; apical left side of process with a short, small spinose process, directed ventrad; right side of process expanded, forming a laminal process, curved upward, directed cephalad; basal ⅓ of right side of periandrium with a horn-like spinose process, directed dorsocaudad; dorsal margin with a straight medium-length spinose process, directed right-dorsocephalad. Endosoma curved towards left, apical margin gradually narrowed, forming a spinose process, margin with small teeth; basal ⅓ of right side with a laminal process, margin with small teeth.

FEMALE GENITALIA. Tergite IX (Fig. 4A–B, D) moderately sclerotized, with a large, nearly quadrate wax plate. Anal segment (Fig. 4C) rectangular, 1.6× as long as wide in dorsal view, anal style linguiform. Gonapophysis VIII (Fig. 4E) elongate and slightly curved upwards. Gonapophysis IX (Fig. 4F) with one middle tooth, distance ratio between middle tooth to apex and length of denticulate portion 2.4.

Gonoplac (Fig. 4G) rod-like, 4.7× as long as wide in lateral view. Posterior vagina pattern as shown in Fig. 4H–I.

Distribution

China (Yunnan).