Oecleopsis digitatus 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 digitatus Lv & Chen sp. nov.

Figs 4A-N , 5D-F

Type materials.

Holotype: China • ♂; Sichuan Province, Dayi County, Xiling Town; 30°38'N, 103°14'E; sweeping, 20 July 2022; Sha-Sha Lv leg.; IEGU. Paratypes: China • 6♂♂4♀♀; Sichuan Province, Dayi County, Xiling Town; 30°38'N, 103°14'E; sweeping, 20 July 2022; Sha-Sha Lv, Lan Zhang, Yong-Jin Sui & Feng-E Li leg.; IEGU.

Diagnosis.

The salient features of the new species include: vertex (Fig. 4A, C ) less than three times as long as broad; spinose process near apex of periandrium on right side (Fig. 4K ) short and thick, finger-like; left side (Fig. 4L ) apical process of endosoma bifurcated, rami short; two subapical spines long, dorsal process tapering toward the end, ventral process curved.

Measurements.

Total length: male 5.8-6.4 mm (n = 7), female 6.8-7.5 mm (n = 5).

Description.

Coloration. General color grayish black (Fig. 4A, B ). Vertex brown-black. Eyes dark brown, ocelli yellowish. Frons black, carinae yellowish brown; rostrum black. Pronotum brown-black with carinae yellowish or light brown. Mesonotum black, carinae brown. Forewings semitranslucent, yellowish brown, with several small brown markings, stigma brown. Hindwings semitransparent. Abdomen dark brown.

Head and thorax. Vertex (Fig. 4A, C ) narrow, 2.41 times longer than wide. Frons (Fig. 4D ) with distinct median carina, longer in middle line than wide at widest portion (about 1.45:1). Clypeus (Fig. 4D ) with distinct median and lateral carinae. Rostrum elongate, surpassing hind-coxae. Pronotum (Fig. 4C ) wider than maximum width of head (including eyes) (1.39:1), lateral and median carinae present. Mesonotum (Fig. 4C ) about 7.17 times longer than pronotum in midline, with 5 carinae, distal part of median carina blurry. Forewings (Fig. 4E ) slender, longer than maximal width (2.94:1), 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. 4F, H ) symmetrical, in lateral view, lateral lobes triangularly extended caudally; in ventral view, dorsal margin concave and U-shaped, widened towards apex. Medioventral process triangular in ventral view. Anal segment (Fig. 4F, 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; 1.64 times longer than wide in dorsal view; anal style finger-like, beyond anal tube. Aedeagus (Fig. 4K-N ) with 4 processes in total; spinose process near apex of periandrium on right side short and thick, directed dorsocephalad, finger-like, only a 1/4 length of periandrium; left side apical process of endosoma bifurcated, curved outward, rami short, dorsal ramus directed dorsad, ventral ramus directed ventrad; 2 subapical spines long, dorsal process tapering toward end, directed cephalad; ventral process curved, curved ventrad. Gonostyli (Fig. 4F-H ) slender, curved apically, tapering into a process, curved portion near right angle, T-shaped in ventral view.

Female terminalia. Terminalia, viewed ventrally, are shown in Fig. 5D . Anal segment (Fig. 5F ) 1.84 times longer than wide in dorsal view. Posterior vagina (Fig. 5E ) elongate, with 4 sclerites in total, dorsal sclerite tapering at the end, median and ventral sclerites long, suboblong and slender, respectively, left side of terminal sclerite twist into thick finger-like process.

Distribution.

China (Sichuan) (Fig. 1 ).

Etymology.

The species name is derived from the Latin adjective " Oecleopsis digitatus ", referring to the finger-like spinose process near apex of periandrium on the right side.

Remarks.

This species is similar to Oecleopsis sinicus (Jacobi, 1944), but differs from the latter in: (1) MP1+2 of forewing 3 branches (MP1+2 of forewing 2 branches in O. sinicus ); (2) rami of bifurcation asymmetrical, unequal in length (rami of bifurcation symmetrical, equal in length in O. sinicus ); (3) spinose process near apex of periandrium finger-like on right side, directed dorsocephalad (spinose process near apex of periandrium awl-shaped on right side, directed ventrocephalad in O. sinicus ).

Figures

Figure 1. Geographic distributions of Oecleopsis species.

Figure 4. A-N Oecleopsis digitatus 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.