Aodingus obscurus, Chen & Yang, 2023

Li, Hong-Xing, Chen, Xiang-Sheng & Yang, Lin, 2023, A new bamboo-feeding planthopper genus Aodingus Chen & Li (Hemiptera: Fulgoroidea: Delphacidae: Tropidocephalini) with descriptions of three new species from China and Vietnam, European Journal of Taxonomy 891, pp. 151-166 : 158-160

Aodingus obscurus gen. et sp. nov.

urn:lsid:zoobank.org:act:673253EE-33A7-41DF-A996-0E7AF7485C22

Figs 3–4

Diagnosis

The salient features of the new species include the following: forewings ( Fig. 3A ) uniformly yellowish brown; lateral margins of basal part of frons ( Figs 3E , 4B ) without short yellowish white transverse markings; ventral margin of aedeagus ( Fig. 4F ) without small process medially.

Etymology

The specific epithet is derived from the Latin word ‘obscuru ’, referring to the dark brown body.

Material examined

Holotype CHINA • Ô; Yunnan, Yingjiang County; 24°44´N, 97°33´E; 18 Aug. 2018; H.X. Li leg.; on bamboo; GUGU-FS-TA-20180801 .

Paratypes

CHINA • 2 ÔÔ, 2 ♀♀; same collection data as for holotype; GUGU-FS-TA-20180802 to GUGU-FS-TA-20180805 • 1 Ô; Yunnan, Yingjiang County; 24°44´N, 97°33´E; 17 Aug. 2015; X.S. Chen leg.; on bamboo; GUGU-FS-TA-20150802 .

Description

MEASUREMENTS. Body length including forewing: male 3.65–4.10 mm (N = 4), female: 4.35–4.45 mm (N = 2); forewing length: male 2.85–3.15 mm (N = 4), female 3.30–3.45 mm (N = 2).

COLORATION. General color yellowish brown to dark brown ( Fig. 3A–F ). Frons dark brown except apical part yellowish white, carinae brown. Clypeus dark brown. Genae pale yellowish white except areas below level of lower margin of eyes dark brown. Eyes reddish brown. Antennae yellowish brown ( Figs 3D–E , 4B ). Vertex, pronotum and mesonotum yellowish brown to dark brown ( Fig. 3C ). Forewing yellowish brown, veins brown ( Figs 3A , 4C ). Legs yellowish brown ( Fig. 3F ). Thorax with ventral part pale yellowish brown, lateral areas with dark brown markings. Abdomen brown to dark brown. Male pygofer and anal segment dark brown.

HEAD AND THORAX. Vertex ( Fig. 4A ) at base broader than medially long about 1: 0.62, slightly narrower at apex than at base about 0.83: 1, lateral carinae subparallel. Frons ( Fig. 4B ) longer in middle line than wide at widest part about 1.29: 1, widest at middle level of eyes, median carina weak. Antennae ( Fig. 4B ) with first segment shorter than second segment about 0.53: 1. Pronotum ( Fig. 4A ) longer than vertex about 1: 0.84. Mesonotum ( Fig. 4A ) longer than pronotum and vertex combined about 1.14: 1. Forewing ( Fig. 4C ) longer in middle line than wide at widest part about 2.62: 1.

MALE GENITALIA. Anal segment of male ( Fig. 4D ) short, ring-like. Pygofer in posterior view ( Fig. 4D ) with opening slightly wider than long, ventral margin concave U-shaped, with 2 small lobe-shape processes on both sides of medioventral margin, in lateral view ( Fig. 4E ) ventral margin longer than dorsal margin, posterior margin sinuate. Aedeagus ( Fig. 4F ) with phyllobase, phallus tubular, long, blunt rounded end, curved ventrally medially, phyllobase slender, arising from base of aedeagus dorsally. Genital styles ( Fig. 4H–I ) stout, long, attaining ventral margin of anal segment, apex forked, with large verruciform process at apical ¼.

Host plant

Bambusoideae.

Distribution

China (Yunnan).

Remarks

This species is similar to A. hainanensis gen. et sp. nov. but differs by: (1) lateral margins of basal part of frons ( Figs 3E , 4B ) without short yellowish white transverse marking (lateral margins of basal part of frons ( Figs 1E , 2B ) with short yellowish white transverse markings, median line yellowish white in A. hainanensis gen. et sp. nov.); (2) antennae ( Figs 3E , 4B ) uniformly yellowish brown (antennae ( Figs 1E , 2B ) with first segment brown dorsally and yellowish brown to pale brown ventrally, second segment pale yellowish brown, middle part dark brown in A. hainanensis gen. et sp. nov.); (3) ventral margin of aedeagus ( Fig. 4F ) without small process medially (ventral margin of aedeagus ( Fig. 2F ) with a small process medially in A. hainanensis gen. et sp. nov.).

Figures

Fig. 3. Aodingus obscurus gen. et sp. nov., holotype (GUGU-FS-TA-20180801). A. Male habitus, dorsal view. B. Same, lateral view. C. Head and thorax, dorsal view. D. Same, lateral view. E. Face. F. Apex of hind leg, ventral view. Scale bars: A–E = 0.5 mm; F = 0.2 mm.

Fig. 4. Aodingus obscurus gen. et sp. nov., holotype (GUGU-FS-TA-20180801). A. Head and thorax, dorsal view. B. Face. C. Forewing. D. Male genitalia, posterior view. E. Same, lateral view. F. Anal segment and aedeagus, lateral view. G. Pygofer, ventral view. H. Genital styles, posterior view. I. Same, lateral view. Scale bars = 0.2 mm.

Fig. 1. Aodingus hainanensis gen. et sp. nov., holotype (GUGU-FS-TA-20090401). A. Male habitus, dorsal view. B. Same, lateral view. C. Head and thorax, dorsal view. D. Same, lateral view. E. Face. F. Apex of hind leg, ventral view. Scale bars: A–E = 0.5 mm; F = 0.2 mm.

Fig. 2. Aodingus hainanensis gen. et sp. nov., holotype (GUGU-FS-TA-20090401). A. Head and thorax, dorsal view. B. Face. C. Forewing. D. Male genitalia, posterior view. E. Same, lateral view. F. Anal segment and aedeagus, lateral view. G. Pygofer, ventral view. H. Genital styles, posterior view. I. Same, lateral view. Scale bars: A–B, D–I = 0.2 mm; C = 0.4 mm.