Hauptenia beibengensis Sui & Chen sp. nov.

Figs 1, 2, 5-13

Type material.

Holotype, ♂, China: Xizang, Motuo, Beibeng (29.25°N, 95.18° E), 15 August 2020, Y-J Sui. Paratypes, 3♂, same data as holotype.

Measurements.

Body length (including fore wing): male 4.86-5.01 mm (n = 4); fore wing length: male 4.45-4.57 mm (n = 4).

Description.

Coloration. General color dark brown. Vertex (Figs 1, 5), frons (Fig. 6), gena (Figs 2, 7), antennae, subantennal process, ocelli, pronotum and tegula (Figs 1, 5, 7) yellowish brown. Rostrum brown, with apex fuscous. Eyes (Figs 1, 2, 5-7) slightly dark brown. Ocelli (Figs 2, 7) slightly yellowish white. Mesonotum (Figs 1, 5) dark brown, with median carina slightly lighter. Fore wing (Figs 1, 2) dark brown, veins same color. Hind wing subhyaline, brownish, veins lightly darker. Thorax with ventral areas yellowish brown. Legs brownish yellow. Genital segment dark brown.

Head and thorax. Head (Figs 1, 5) including eyes distinctly narrower than pronotum (1: 1.49), short. Vertex (Figs 1, 5) trapezoidal, length between basal angles wider than length in middle line (2.42: 1), slightly projecting in front of eyes, posterior margin slightly concave, lateral carinae slightly elevated, median carina absent, disk slightly depressed. Frons (Fig. 6) longer in middle line than at the widest parts (1.54: 1), shorter than clypeus (1: 1.51), near apical 2/5 widest, disk depressed in entire length, lateral carinae keeled. Clypeus (Fig. 6) distinctly carinate medially from near basal 1/3. Apical segment of rostrum longer than wide. Antennae (Figs 2, 6, 7) short, second antennomere oval, flagellum originated from apical point. Subantennal processes (Figs 2, 7) distinct, ear-shaped. Transversely oblique carina across the gena between subantennal process and lateral carina of frons distinct. Eyes (Figs 5-7) semicircular. Lateral ocelli distinct, adjacent to eyes and antennae. Median length of pronotum distinctly less than that of vertex, anterior margin between eyes broadly convex, length behind eyes as long as median length. Mesonotum dorsally elevated, in lateral view raised above vertex, with median carinae reaching to the middle, posterior end triangularly depressed. Fore wing (Fig. 8) narrow, ~ 3.1 × as long as the widest point, clavus closed, RA with two terminals, MP with four sectors. Hind wing (Fig. 9) shorter than fore wing, with RP reaching to apical margin, CuA with three terminals. Hind tibia without lateral spine. Spinal formula of hind leg 7-6-5.

Male terminalia. Anal tube (Fig. 10) moderately long, in dorsal view, lateral margin narrowed gradually toward the near middle and then parallel toward apex, width at base larger than the narrowest part ~ 1.9: 1, length in middle line (including epiproct) than widest part at base ~ 1.75: 1, dorsolateral margin convex medially near base; epiproct turned ventrad. Pygofer (Fig. 10) in lateral view distinctly shorter dorsally than ventrally, dorsocaudal angle not produced. Gonostyli (Fig. 10) symmetrical, short and stout, apical margin truncate, dorsocaudal angle not produced; each inner lower surface with small triangular process apically; inner side of laterodorsal margin with broad projection distad, in left lateral view, basal hook shorter and stout, apical hook slightly turned outward at end. Phallic complex (Figs 12, 13) asymmetrical. Periandrium slightly curved, in left view, a big process arising from dorsal margin at base, and a short process arising from end with apex acute; in right view, a long and slender process arising from end near ventral margin. Endosoma more complex, with four lobes, one membrane and five processes of different sizes. Among four lobes, the longest lobe (L1) produced reaching to near base of periandrium, acute at apex; another other three lobes (L2-L4) round at apex, close together. In left lateral view, a small process (P1) arising from the longest lobe near apex, acute at apex; a long process (P2) arising from ventral margin of endosoma near at base, reaching to middle of periandrium; two long and sharped processes (P3, P4) arising from dorsal margin at base, pointed cephalad. In right lateral view, a small triangular process (P5) arising from the membrane one at base near dorsal margin.

Remarks.

This species is similar to H. fellea (Yang & Wu, 1994), but differs from the latter in the mesonotum (Figs 1, 5) dark brown with median carinae reaching to the middle (mesonotum yellowish brown with median carinae reaching to near end in H. fellea); gonostyli (Fig. 10) with dorsocaudal angle not produced (gonostyli with dorsocaudal angle produced into finger-shaped process in H. fellea); endosoma (Figs 12, 13) with four lobes, one membrane and five processes of different sizes (endosoma with two lobes and four processes in H. fellea).

Etymology.

This species is named after the collection site of the holotype, Beibeng Township in Xizang.

Host plants.

Unknown.

Distribution.

China (Xizang).