Andixius productus Wang & Chen, 2023

Wang, Xiao-Ya, Zhi, Yan, Yang, Lin & Chen, Xiang-Sheng, 2023, Four new species of the genus Andixius Emeljanov & Hayashi (Hemiptera, Fulgoromorpha, Cixiidae) from China, ZooKeys 1141, pp. 149-168 : 149

Andixius productus Wang & Chen sp. nov.

Figs 1E, F , 6A-C , 7A-H , 8A-H

Type material.

Holotype: ♂, China: Xizang Province, Medog County, Damu Town, 80K (29.6237°N, 95.4888°E), 18 August 2020, Yongjin Sui leg.; Paratypes: 6♂♂ 2♀♀, same data as holotype.

Description.

Body length: male 5.71-6.90 mm (n = 7), female 7.78-7.90 mm (n = 2).

Coloration. General color black-brown (Figs 1E, F , 6A, B ). Eyes black-brown, ocelli faint yellowish brown, semitranslucent. Lateral margin of frons yellowish brown, behind eyes with an off-white spot. Antenna and vertex black-brown. Face and rostrum dark fawn. Pronotum and mesonotum black-brown. Forewing semitranslucent, generally black-brown, veins and stigma yellowish brown, tubercles black-brown; costal vein, in the middle of, behind and near claval fork with deep-brown spots. Hind tibiae light brown. Ventral abdomen brown.

Head and thorax. Vertex (Figs 1E , 6A ) 1.65 times longer than wide; anterior margin slightly curved, recessed; posterior margin V-shaped, recessed; lateral carinae developed; median carina absent. Frons (Fig. 6B ) claviform, 2.90 times as long as wide. Pronotum (Figs 1E , 6A ) as long as vertex. Mesonotum 1.21 times longer than pronotum and vertex combined, lateral carinae curved outwards. Forewing (Figs 1F , 6C ) 2.49 times longer than wide, with 13 apical cells and seven subapical cells; RP 3 branches, MP with five terminals: MP11, MP12, MP2, MP3, and MP4, fork MP1+MP2 basad of fork MP3+MP4. Hind tibia with five lateral spines; chaetotaxy of hind tarsi 6/5.

Male genitalia. Pygofer (Fig. 7A, C ) symmetrical. Medioventral process rounded protruding in ventral view. Anal segment (Fig. 7A, D ) long, tubular, with dorsal margin almost straight and apical margin slightly expanded downwards in lateral view; 2.67 times longer than wide in dorsal view; anal style strap-shaped, not beyond anal segment. Gonostyli (Fig. 7B, C ) symmetrical ventrally, inner margin with a small spinose process near base, apex enlarged; in lateral view, near apex bending upwards. Aedeagus (Fig. 7E-H ) with seven processes. In left side view, periandrium with an expanded laminal process around the left side and dorsal margin of periandrium; ventral margin of the expanded structure with two spinose processes, upper one slender, slightly curved, directed ventrocephalad, lower one small, directed ventrad; in right side view, apical ventral margin of periandrium projecting, the process expanded downwards, apex bifurcated, forming two spinose processes, the dorsal one long, another short, directed cephalad, the right side of the process with a long spinose process, bending around the periandrium, directed left-dorsocephalad, apical dorsal margin of periandrium with a long spinose process, near apex slightly curved upwards, directed dorsocephalad; in dorsal view, laminal process covering dorsal margin, middle part of periandrium with a thick, long spinose process, slightly curved, directed cephalad. Endosoma short, slightly sclerotized, without process.

Female genitalia. Tergite IX (Fig. 8A, B, D ) moderately sclerotized, with a large nearly elliptical wax plate. Anal segment (Fig. 8C ) rectangular, 2.43 times longer than wide in dorsal view, anal style linguiform. Gonapophysis IX (Fig. 8F ) with one middle tooth; distance ratio between middle tooth to apex and length of denticulate portion is 1.98. Gonoplac (Fig. 8G ) rod-like, 4.44 times longer than wide in lateral view. Posterior vagina pattern as shown in Fig. 8H .

Distribution.

China (Xizang) (Fig. 12 ).

Etymology.

The specific name is derived from the Latin adjective productus, referring to the one long spinose process arising from the apical ventral margin of the periandrium.

Remarks.

Male genitalia of A. productus sp. nov. are similar to A. trifurcus Zhi & Chen, 2018, but differs in: (1) periandrium with an expanded laminal process around the left side and dorsal margin of periandrium (laminal process around the left side, dorsal margin and ventral margin in A. trifurcus ); (2) basal ventral margin of periandrium with laminal process, of which ventral margin with two processes ( A. trifurcus with three long spinose processes in the same position); (3) right side of ventral margin of periandrium with three spinose processes (right side of middle part of periandrium with a spinose process in A. trifurcus ); (4) middle part of periandrium with a thick and long spinose process (without process in A. trifurcus ).

Figures

Figure 1. New species of Andixius A, B A. flagellihamus sp. nov., male A dorsal view B lateral view C, D A. gracilispinus sp. nov., male C dorsal view D lateral view E, F A. productus sp. nov., male E dorsal view F lateral view G, H A. truncatus sp. nov., male G dorsal view H lateral view. Scale bars: 0.5 mm.

Figure 6. Andixius productus sp. nov., male A head and thorax, dorsal view B face, ventral view C forewing. Scale bars: 0.5 mm (A, B); 1.0 mm (C).

Figure 7. Andixius productus sp. nov., male A genitalia, lateral view B gonostyli, lateral view C pygofer and gonostyli, ventral view D anal segment, dorsal view E aedeagus, right side F aedeagus, left side G aedeagus, dorsal view H aedeagus, ventral view. Scale bars: 0.5 mm.

Figure 8. Andixius productus sp. nov., female A genitalia, lateral view B genitalia, ventral view C anal segment, dorsal view D tergite IX, caudal view E gonapophysis VIII and gonocoxa VIII, dorsal view F gonapophysis IX, lateral view G gonoplac, inner lateral view H posterior vagina, ventral view. Scale bars: 0.5 mm.

Figure 12. Geographic distribution of Andixius species.