Aoyuanus varius, Zhou, Zheng-Xiang, Yang, Lin & Chen, Xiang-Sheng, 2019

Zhou, Zheng-Xiang, Yang, Lin & Chen, Xiang-Sheng, 2019, Taxonomic study of the genus Aoyuanus Ding & Chen, with descriptions of two new species (Hemiptera, Fulgoromorpha, Delphacidae), ZooKeys 822, pp. 53-65 : 59-62

Aoyuanus varius sp. n. Figs 40-48, 49-60

Type material.

Holotype: ♂, China: Yunnan, Dali County, Xiaguan (25°58'N, 100°22'E), 4 Aug 2006, Q-Z Song. Paratype: 1♂, same data as holotype.

Type locality.

China: Yunnan, Dali County, Xiaguan (25°58'N, 100°22'E), 1988 m.

Measurements

(n = 2). Body length (from apex of vertex to apex of forewing): male 2.00-2.02 mm; forewing length: male 1.07-1.10 mm.

Diagnosis.

Forewings pale yellow with dark black marking at apex (Figs 40, 41). Aedeagus forked at basal quarter, dorsal one broadened at apex in ventral view, longer than ventral one (Figs 54, 55). Anal segment with two processes at laterocaudal margins, processes asymmetrical (Figs 52, 53).

Description.

Coloration. General color yellow to black (Figs 40, 41, 43-45). Head yellow to yellowish brown (Figs 40, 41, 43-45). Vertex yellowish brown (Figs 40, 43). Frons black brown, except middle carina and lateral margins yellowish brown (Fig. 44). Clypeus yellowish brown to dark brown (Fig. 44). Rostrum yellowish brown, with apex brown. Genae yellowish brown (Figs 44, 45). Eyes usually yellowish brown (Figs 40, 41, 43-45); ocellus black (Fig. 45). Antennae with basal segment yellowish brown and black at apex and with second segment yellowish brown (Figs 40, 41, 43 -45). Pronotum and mesonotum yellowish brown (Figs 40, 43). Forewings pale yellow with dark black marking at apex and midline dorsal margin (Figs 40, 41). Legs yellow to yellowish brown, tibiae yellow and yellowish brown basally, tarsomeres yellow (Figs 40, 41). Abdomen black, except lateral margins and dorsal apex with some small yellow markings (Figs 40, 41).

Structure. Head and thorax. Head including eyes narrower than pronotum, ratio 0.92:1 (Figs 43, 46). Vertex with longer than wide at base, ratio 1.18:1, narrower at apex than at base, ratio 0.81:1 (Figs 43, 46). Frons longer in middle line than wide at widest part, ratio 1.76:1 (Figs 44, 47). Postclypeus wider at base than frons at apex, slightly longer than wide at base (Figs 44, 47). Antennae with basal segment longer than wide, ratio 1.4:1, shorter than second, ratio 0.58:1 (Figs 44, 47). Pronotum shorter than vertex, ratio 0.87:1 (Figs 43, 46). Mesonotum shorter than pronotum and vertex combined, ratio 0.54:1 (Figs 43, 46). Posttibial spur with 18 distinct teeth along hind margin. Brachypterous forewings distinctly not reaching apex of abdomen, longer than widest part, ratio 1.73:1, widest at middle (Figs 40, 41).

Male genitalia. Pygofer with one medioventral process, which forked at apex (Figs 49-51). Aedeagus forked at basal quarter, dorsal one longer and broader at apex than ventral one in ventral view (Figs 54, 55). Parameres small, with apical half-turned mesad (Figs 56-59). Suspensorium Y-shaped, stem longer than arms, ratio 2.5:1 (Fig. 60). Anal segment with two processes at laterocaudal margins, processes asymmetrical (Figs 52, 53).

Reported hosts.

None.

Distribution.

China (Yunnan).

Etymology.

The specific name is from the Latin word varius (meaning different, changeable), which alludes to the anal segment with two processes, which are asymmetrical.

Remarks.

This new species is extremely similar to Aoyuanus spathulus sp. n., but can be distinguished from them by the anal segment with lateroapical angles asymmetrical (anal segment with lateroapical angles symmetrical in A. spathulus sp. n.).