Oecleopsis acerbus Lv & Chen, 2024

Lv, Sha-Sha, Yang, Lin, Zhang, Yu-Bo, Zhi, Yan, Zhang, Pei & Chen, Xiang-Sheng, 2024, Three new species of the planthopper genus Oecleopsis Emeljanov, 1971 from China (Hemiptera, Fulgoromorpha, Cixiidae), ZooKeys 1188, pp. 251-264 : 251

Oecleopsis acerbus Lv & Chen sp. nov.

Figs 2A-N , 5A-C

Type materials.

Holotype: China • ♂; Guizhou Province, Yanhe County, Xinjing Town; 28°53'N, 108°17'E; sweeping, 7 June 2007; Pei Zhang leg.; IEGU. Paratypes: 7♂♂, 3♀♀; China • Guizhou Province, Yanhe County, Xinjing Town; 28°53'N, 108°17'E; sweeping, 7 June 2007; Zheng-Guang Zhang & Pei Zhang leg.; IEGU.

Diagnosis.

The salient features of the new species include: vertex (Fig. 2A, C ) less than three times as long as broad; spinose process near apex of periandrium on right side (Fig. 2K ) short, nib-like; left side (Fig. 2L ) apical process of endosoma bifurcated, rami of bifurcation asymmetrical; two subapical spines, dorsal process long and tapering to apex, lateral margins straight, ventral process constricted in the middle.

Measurements.

Total length: male 7.20-7.76 mm (n = 8), female 7.61-8.05 mm (n = 3).

Description.

Coloration. General color grayish brown (Fig. 2A, B ). Vertex blackish brown. Eyes yellowish brown, ocelli yellowish. Frons yellowish to blackish brown, carinae lighter; rostrum blackish brown. Pronotum blackish brown with carinae yellowish or light brown. Mesonotum blackish brown, carinae brown. Forewings semitranslucent, light grayish brown, distal part with several small patches, stigma yellowish brown. Hindwings semitransparent. Abdomen yellowish brown.

Head and thorax. Vertex (Fig. 2A, C ) narrow, 2.36 times longer than wide. Frons (Fig. 1D ) with distinct median carina, longer in middle line than wide at widest portion (about 1.33:1). Clypeus (Fig. 2D ) with distinct median and lateral carinae. Rostrum elongate, surpassing hind-coxae. Pronotum (Fig. 2C ) wider than maximum width of head (including eyes) (1.30:1), lateral and median carinae present. Mesonotum (Fig. 2C ) about 6.41 times longer than pronotum in midline, with 5 carinae, distal part of median carina blurry. Forewings (Fig. 2E ) slender, longer than maximal width (2.85:1), with 12 apical and 6 subapical cells; fork ScP+R distal to fork CuA1+CuA2; RP 3 branches, MP1+2 3 branches, and MP3+4 2 branches.

Male terminalia. Pygofer (Fig. 2F, H ) symmetrical, in lateral view, lateral lobes triangularly extended caudally; in ventral view, dorsal margin concave and U-shaped. Medioventral process triangular in ventral view. Anal segment (Fig. 2F, I, J ) tubular, asymmetrical, widened towards apex in left side view; in right side view, left ventral margin convex and right ventral margin excavated near apex; 1.55 times longer than wide in dorsal view; anal style finger-like, beyond anal tube. Aedeagus (Fig. 2K-N ) in total with 4 processes; spinose process near apex of periandrium on right side short relatively, nib-like, directed right-dorsocephalad, only a quarter length of periandrium; left side apical process of endosoma bifurcated, curved outward, rami of bifurcation asymmetrical, dorsal ramus longer and thicker, ventral ramus slender and shorter; 2 subapical spines, dorsal process long and tapering to apex, lateral margins straight, directed ventrocephalad; ventral process constricted in the middle, curved ventrocephalad. Gonostyli (Fig. 2F-H ) slender, curved apically, tapering into a process, T-shaped in ventral view.

Female terminalia. Terminalia as shown in Fig. 5A ventrally. Anal segment (Fig. 5C ) 1.79 times longer than wide in dorsal view. Posterior vagina (Fig. 5B ) elongate, with 4 sclerites in total, dorsal sclerite tapering at the end, median and ventral sclerites long, oval and trapezoidal, respectively, left side of terminal sclerite twist into angular process with straight lateral margins.

Distribution.

China (Guizhou) (Fig. 1 ).

Etymology.

The species name is derived from the Latin adjective " Oecleopsis acerbus ", referring to dorsal process of the endosoma which is pointed on the left side.

Remarks.

This species is similar to Oecleopsis wuyiensis Guo, Wang & Feng, 2009, but differs from the latter in: (1) frons yellowish to blackish brown (frons black in O. wuyiensis ); (2) ventral margin near base of periandrium without a spinose process (ventral margin near base of periandrium with a spinose process in O. wuyiensis ); (3) dorsal process of endosoma directed ventrocephalad (dorsal process of endosoma directed dorsocephalad in O. wuyiensis ); (4) ventral process of endosoma curved and rounded at apex (ventral process of endosoma straight and pointed in O. wuyiensis ).

Figures

Figure 1. Geographic distributions of Oecleopsis species.

Figure 2. A-N Oecleopsis acerbus sp. nov., male A habitus, dorsal view B habitus, lateral view C head and thorax, dorsal view D frons, ventral view E forewing F male terminalia, lateral view G gonostyli, inner lateral view H pygofer and gonostyli, ventral view I anal segment, dorsal view J anal segment, right lateral view K aedeagus, right side L aedeagus, left side M aedeagus, dorsal view N aedeagus, ventral view. Scale bars: 0.2 mm.

Figure 5. A-F female terminalia of Oecleopsis species A-C Oecleopsis acerbus sp. nov. D-F Oecleopsis digitatus sp. nov. A, D female terminalia, ventral view B, E posterior vagina, ventral view C, F anal segment, dorsal view. Scale bars: 0.2 mm.