Semidalis procurva Zhao, Y. Li, M. Li & Liu, 2021

Zhao 1, Yaru, Li *, Ying, Li, Min & Liu, Zhiqi, 2021, Two new species of Semidalis Enderlein, 1905 (Neuroptera, Coniopterygidae) from China, with an identification key to Chinese species, ZooKeys 1055, pp. 43-54 : 43

Semidalis procurva Zhao, Y. Li, M. Li & Liu sp. nov.

Figs 4 , 5

Type material.

Holotype male, China: Yunnan (Province): Ruili (County): Mengxiu (Township): Nanjingli (Village), [24.0917°N, 97.8460°E], 30.iii.2019, leg. Yaru Zhao. Paratypes. Same data as holotype, 37 males. CHINA: Yunnan (Province): Ruili (County): Mengxiu (Township): Nanjingli (Village), [24.0917°N, 97.8460°E], 2.v.1981, leg. Chikun Yang, 3 males.

Diagnosis.

Male genitalia: stylus present; parameres with ventral knob, long, distal part widened and bent upwards, and apical part bent forwards distally in an obtuse angle; uncini absent.

Measurements.

Male: Forewing length 3.2-3.5 mm, width 1.1-1.3 mm. Hindwing length 2.5-2.7 mm, width 1.0-1.3 mm. Body length 2.4-2.6 mm. Antennae 34-35 segments, 2.1-2.3 mm in length (N = 15).

Description.

Male: Head (Fig. 4 ). Brown. Frons and palpi normal. Compound eyes large, dark. Scape and pedicel broad, blunt and yellowish brown. Flagellomeres dark brown. Basal flagellomeres as long as broad. Subsequent flagellomeres tapering gradually. Apical flagellomeres tapered. Flagellomeres each with two circles of hair-like sensilla. Maxillary and labial palps yellowish brown.

Thorax (Fig. 4 ). Pale ochreous. Thoracic apodemes light brown. Sutures dark brown. Meso- and metanotum with shoulder spots. Legs brown (except femur and tibia yellowish brown).

Wing. Wing membrane yellowish brown, almost hyaline.

Male terminalia (Fig. 5 ). Abdomen pale ochreous. Segment 9 wholly synscleritous, proximally strengthened by an apodeme encircling the whole abdomen. Ectoproct subtriangular in lateral view; dorso-caudal angle acute in caudal view. Stylus small at the border of ectoprocts and segment 9. Hypandrium truncate apically in lateral view; dorsal margin with a deep incision in caudal view; lateral process slender in caudal view. Parameres long; basal part slender; distal part widened and bent upwards, apical part bent forwards in an obtuse angle, with ventral knob, connected with a small sclerite. Uncini absent.

Distribution.

China (Yunnan).

Etymology.

The species name is a Latin adjective referring to the forward bending pose on distal part of parameres.

Remarks.

The new species belongs to the Semidalis rectangular group. It is similar to Semidalis macleodi Meinander, 1972, but the two species differ in the shape of parameres. The apical part of the parameres is bent forwards in an obtuse angle in the new species, while it is bent upwards in S. macleodi . Moreover, a ventral knob is present in the proximal two thirds of the parameres in the new species, while it is present at the tip of the parameres in S. macleodi .

Figures

Figure 4. Semidalis procurva sp. nov., male habitus, lateral view. Scale bar: 1 mm.

Figure 5. Semidalis procurva sp. nov., male genitalia a, b genitalia, lateral view c, d genitalia, caudal view e, f genitalia, ventral view g parameres, lateral view. Pa, parameres; S, stylus.