Oliparisca menglaensis Zhi & Chen, 2020

Zhi, Yan, Yang, Lin & Chen, Xiang-Sheng, 2020, First record of the genus Oliparisca Emeljanov (Hemiptera: Fulgoroidea: Cixiidae) from China, with description of one new species, Zootaxa 4896 (4), pp. 577-585 : 579-580

Oliparisca menglaensis Zhi & Chen , sp. nov.

( Figs 1–27 )

Description. Body length: male 6.1–6.5 mm (n = 2), female 7.0– 7.5 mm (n = 6).

Coloration. General color brown ( Figs 1–4 ). Eyes brown, ocelli yellow. Vertex, face, rostrum and pronotum brown, mesonotum dark brown. Forewing semi-translucent, brown, stigma brown, termination of forewing blackish brown and middle 2/3 part of forewings with small irregular blackish brown patches. Hind tibiae brown and abdominal sternites brownish black.

Head and thorax. Vertex ( Figs 1, 3 , 5 ) broad, 1.4 times wider than long, with a distinct subapical transverse carina arc-shaped, connected with anterior border of vertex by two longitudinal small carinae, median carina only discernible at basal half behind subapical carina, posterior margin nearly excavated at right angle, lateral margins slightly elevated. Frons ( Figs 4 , 6 ) 0.9 times as long as wide. Frons with median carina distinct and fork of median carina near apex. Rostrum ( Fig. 2 ) reaching hind femur. Pronotum ( Figs 1, 3 , 5 ) 1.6 times longer than vertex. Mesonotum 1.5 times longer than pronotum and vertex combined. Forewing ( Fig. 8 ) 2.9 times longer than wide, with 12 apical and 6 subapical cells; RA 2 branches, RP 3 branches, MP with 5 terminals: MP11, MP12, MP2, MP3, and MP4, fork MP1+MP2 basad of fork MP3+MP4. Hind tibia ( Fig. 9 ) with 5‒9 very small lateral spines; chaetotaxy of hind tarsi: 7/5, first segment of hind tarsus without platellae and second segment with 2 platellae.

Male genitalia. Pygofer ( Figs 10–12 ) asymmetrical, dorsal margin concave and U-shaped ventrally, widened towards apex; left lateral lobe extended caudally and bifurcated into two spinose processes, the dorsal one much longer; right lateral lobe produced caudally, apex rounded. Medioventral process large, cup-shaped ventrally. Anal segment ( Figs 10, 11, 13, 14 ) long tubular, nearly symmetrical, twice longer than wide in dorsal view; anal style strap-shaped, beyond anal segment; apical margin curving downward. Gonostyli ( Figs 12, 15, 16 ) in ventral view asymmetrical, the right one much larger, widening towards apex, apical part extended and apical margin rounded. Periandrium of aedeagus ( Figs 17–20 ) without process. Endosoma long, generally curving ventrally, with two processes on ventral margin. Basal process large, laminal, directed dorsocephalically; the middle one bifurcated, and each ramus branched respectively.

Female genitalia. Posterior margin of pregenital sternite ( Fig. 21 ) with a large wide projection. Tergite IX ( Fig. 23 ) moderately sclerotized, with a large nearly elliptical wax plate. Anal segment ( Fig. 22 ) nearly round, 1.8 times longer than wide in dorsal view. Gonapophysis VIII ( Fig. 24 ) and Gonapophysis IX ( Fig. 25 ) thin and hair-shaped. Gonoplac ( Fig. 25 ) well developed, broad, basal half fused together. Posterior vagina ( Figs 26–27 ) elongate, with a long nearly cylindrical sclerite, the part in dorsal view much shorter than that in ventral view.

Type material. Holotype: ³, CHINA: Mohan Town (21°14', 101°42'), Mengla County, Yunnan Province, 21 June 2016, leg. Ying-Jian Wang; paratypes: 1³ 6♀♀, same collection area as holotype, 20–23 June 2016, leg. Liang- Jing Yang, Ying-Jian Wang and Qiang Luo.

Distribution. China (Yunnan) ( Fig. 28 ).

Remarks. Male genitalia of O. menglaensis sp. nov. is similar to O. muluensis ( Van Stalle, 1991) , but differs in: (1) endosoma without spinose process on right side (the latter with three spinose processes on right side); (2) ventral margin of endosoma with a spinose process at basal and middle part respectively (the latter without spinose process at the same position); (3) left lateral lobe of pygofer bifurcated (the latter not bifurcated); (4) right gonostylus much larger than left one (left gonostylus longer than right one in O. muluensis ).

Etymology. The species name is derived from the name of the type locality, Mengla County in Yunnan Province.

Figures

FIGURE 28. Distribution records of the species from genus Oliparisca. O. agusani (•); O. inermis (▲); O. menglaensis sp. nov. (·); O. microstylus (•); O. modicus (•); O. mogogonipae (▲); O. muluensis (·); O. penrissensis (▲); O. pundaloyensis (▲); O. simplex (·); O. sulawesiensis (·).

FIGURES 1–4. Oliparisca menglaensis sp. nov., male. 1. dorsal view; 2. lateral view; 3. Head and thorax, dorsal view; 4. Face, ventral view. Scale bars: 0.5 mm.

FIGURES 5–20. Oliparisca menglaensis sp. nov., male. 5. Head and thorax, dorsal view; 6. Face, ventral view; 7. Head, top view; 8. Forewing; 9. Apex of right hind leg, ventral view; 10–11. Genitalia 10. left lateral view 11. right lateral view; 12. Pygofer and gonostyli, ventral view; 13–14. Anal segment 13. dorsal view 14. caudal view; 15–16. Gonostyli, inner lateral view 15. right 16. left; 17–20. Aedeagus 17. right side 18. left side 19. dorsal view 20. ventral view. Scale bars 0.5 mm (5–7, 9–20); 1.0 mm (8).

FIGURES 21–27. Oliparisca menglaensis sp. nov., female. 21. Genitalia, ventral view; 22. Anal segment, dorsal view; 23. Tergite IX, caudal view; 24. Gonapophysis VIII and gonocoxa VIII, dorsal view; 25. Gonapophysis IX and Gonoplac, ventral view; 26. Posterior vagina, ventral view; 27. Posterior vagina, dorsal view. Scale bars: 0.5 mm.