Neoperla hajeki sp. nov.

Figs 3, 4, 5

Type material.

Holotype: male (NMP), China: Yunnan Province, Baoshan City, Zizhi Village, 29.VI-2.VII.2016, 25°43.7'N, 98°34.1'E, 1995 m, light trap, leg. J. Hájek and J. Růžička . Paratypes: 9 females (NMP), 1 male and 3 females (HIST), 1 male and 2 females (HNHM), same date as holotype.

Diagnosis.

This species is characterized by a small dark marking over the ocellar area and a dark brown stigma before the M-line. The male of new species is characterized by an S-shaped aedeagal tube and by a sac bearing a subapical triangular patch of spinules in dorsal aspect.

Description.

Adult habitus (Figs 3, 5). General body color brown. Head general pale brown, a small dark marking covers ocellar area, with a dark brown stigma before M-line. Head slightly wider than pronotum; compound eyes blackish, antenna dark brown except the basal segment yellowish (Figs 3A, 5A), palpi pale brown. Distance between ocelli narrower than the diameter of ocellus and a small marking between ocelli dark brown. Pronotum yellow, with rugosities and a strip-like midline (Figs 3A, 5A). Wings hyaline, veins brown; legs brown, basal part of femur dark brown, with wider yellow bands in mid- and hind legs (Figs 3B, 5B). Cerci yellowish (Figs 3D, 5B).

Male (Figs 3, 4). Forewing length 9.1-9.3 mm, hind wing length 7.9-8.1 mm. Process of tergum 7 sclerotized and triangular, with a nipple-like apex and covered with small sensilla basiconica (Fig. 3B, D). Tergum 8 with a median plump mound and a few sensilla basiconica, mostly covered by the process of tergum 7. Tergum 9 with two separated mesal projections covered by sensilla basiconica and hairs. Hemitergal processes of tergum 10 finger-like in shape, slightly curved medially in dorsal aspect, apex acute (Fig. 3B, D).

Aedeagus. Aedeagal tube sclerotized, slightly S-shaped in lateral aspect. Sac short, ca 1/3 as long as the tube (Fig. 4). Aedeagal sac bearing a subapical triangular patch of spinules in dorsal aspect (Fig. 4A), remainder bald except a few ventral spinules (Fig. 4B, C).

Female (Fig. 5). Forewing length 9.3-9.6 mm, hind wing length 8.2-8.4 mm. General color pattern is similar to males. The subgential plate of sternum 8 is not produced posteriorly. Vagina large and apically slender, spiral and incurved, apical round, full of scaly spots. Spermatheca small, its origin in the terminal vagina.

Egg (Fig. 6). Chorion length 346-348 μm, width 173-177 μm . Micropyles 3 with rims, placed ca 1/3 length near opercullum, each located between striae (Fig. 6A, F). Collar not distinctly stalked, but slightly constricted at base; width ca 79.5 μm at collar (Fig. 6D). Collar short, irregular in shape (Fig. 6D). Rim slightly flanged, margin irregularly scalloped. Chorion with striate on lid and collar. FCIs on lid distinct; cells with thin, smooth walls and floors punctuated (Fig. 6B, E).

Etymology.

The species is named after Dr Jiri Hájek for collecting the specimens.

Distribution.

China (Yunnan).

Ecology.

See ecology of Neoperla gaoligongshana sp. nov.

Remarks.

The new species is a member of the N. clymene group. Color pattern, pronotum, and male genital features are similar to Neoperla orissa Stark & Sivec, 2015 from India. The new species can be easily separated from N. orissa by the projection of tergum 7 and detail of the aedeagal sac armature. In N. hajeki, the projection of tergum 7 is pointed in dorsal aspect, and the dorsal spines of the aedeagal sac are triangularly arranged. In N. orissa, the slender and median projection of tergum 7 appears truncate in dorsal aspect, and the spines of the sac are arranged in several close-set rows.