Aodingus cuongi, 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 : 161-165

Aodingus cuongi gen. et sp. nov.

urn:lsid:zoobank.org:act:2D84C1A9-D69D-453A-80B3-7BC71CD1B97A

Figs 5–8

Diagnosis

The salient features of the new species include the following: forewings brown ( Fig. 6C ) to dark brown, basal ¼ with wide transparent transverse band, anterior margin with 2 transparent spots in distal ¼.

Etymology

This species is named in honour of the collector of the specimens, Dr Ha-Viet Cuong.

Material examined

Holotype CHINA • Ô; Yunnan, Mengla County; 21°55´N, 101°15´E; 14 Jun. 2019; H.X. Li leg.; on bamboo; GUGU-FS-TA-20190601 .

Paratypes

CHINA • 9 ÔÔ, 3 ♀♀; same collection data as for holotype; GUGU-FS-TA-20190602 to GUGU-FS-TA-20190613 ; VIETNAM • 3 ÔÔ, 1 ♀; Thanh Hoa County; 19°81´N, 105°77´E; 30 Jun. 2009; H.V. Cuong leg.; on bamboo; GUGU-FS-TA-20090601 to GUGU-FS-TA-20090604 .

Description

MEASUREMENTS. Body length including forewing: male 3.90–4.20 mm (N = 9), female: 4.50–4.80 mm (N = 3); forewing length: male 3.05–3.30 mm (N = 9), female 3.50–3.75 mm (N = 3).

COLORATION. General color yellowish brown to brown with dark brown markings ( Fig. 5A–F ). Frons black except apical part yellowish white, lateral margins of basal part with short yellowish white transverse markings, median line yellow. Clypeus yellowish brown, lateral carinae dark brown. Genae yellowish brown except areas below level of lower margin of eyes dark brown. Eyes reddish brown. Antennae with first segment with median and apical parts dark brown, second segment with median and apical dorsal parts brown to dark brown ( Fig. 5D–E ). Vertex, pronotum and mesonotum yellowish brown to dark brown ( Fig. 5C ). Forewings brown to dark brown, basal ¼ with wide transparent transverse band, anterior margin with 2 transparent spots in distal ¼, veins dark brown ( Fig. 6C ). Wings smoke brown, veins dark brown. Legs pale yellowish brown to brown ( Fig. 5F ). Thorax with ventral part brown, lateral areas with dark brown markings. Abdomen brown to dark brown. Male pygofer and anal segment dark brown.

HEAD AND THORAX. Vertex ( Fig. 6A ) at base broader than medially long about 1: 0.59, narrower at apex than at base about 0.71: 1, lateral carinae expanded in front of eyes. Frons ( Fig. 6B ) longer in middle line than wide at widest part about 1.90: 1.79, widest at middle level of eyes, median carina distinctly convex, lateral parts flat concave. Antennae ( Fig. 6B ) with first segment shorter than second segment about 0.50: 1. Pronotum ( Fig. 6A ) longer than vertex about 1.08: 1. Mesonotum ( Fig. 6A ) longer than pronotum and vertex combined about 1.36: 1. Forewing ( Fig. 6C ) longer in middle line than wide at widest part about 2.63: 1.

MALE GENITALIA. Anal segment of male ( Fig. 6D ) short, ring-like. Pygofer in posterior view ( Fig. 6D ) 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. 6E ) ventral margin longer than dorsal margin, posterior margin sinuate. Aedeagus ( Fig. 6F ) with phyllobase, phallus tubular, long, blunt rounded end, curved ventrally medially, with small process on ventral margin of aedeagus medially, phyllobase long, spinous, arising from base of aedeagus dorsally. Genital styles ( Fig. 6H–I ) stout, long, attaining ventral margin of anal segment, apex forked, with large verruciform process at apical ¼.

Host plant

Bambusoideae.

Distribution

China (Yunnan), Vietnam (Thanh Hoa).

Remarks

This species is similar to A. obscurus gen. et sp. nov. but differs by: (1) lateral margins of basal part of frons ( Figs 5E , 6B ) with short yellowish white transverse markings, median line yellow (basal part of frons ( Figs 3E , 4B ) without short yellowish white transverse marking in A. obscurus gen. et sp. nov.); (2) antennae ( Figs 5E , 6B ) with first segment brown dorsally and yellowish brown to pale brown ventrally, second segment pale brown, middle part dark brown (antennae ( Figs 3E , 4B ) uniformly yellowish brown in A. obscurus gen. et sp. nov.); (3) forewing ( Figs 5A , 6C ) brown to dark brown, basal ¼ with wide transparent transverse band, anterior margin with 2 transparent spots in distal ¼ (forewing ( Fig. 3A ) uniformly brown in A. obscurus gen. et sp. nov.); (4) ventral margin of aedeagus ( Fig. 6F ) with a small process medially (ventral margin of aedeagus ( Fig. 4F ) without small process medially in A. obscurus gen. et sp. nov.).

This species is also similar to A. hainanensis gen. et sp. nov. but differs by: (1) forewing ( Figs 5A , 6C ) brown to dark brown, basal ¼ with wide transparent transverse band, anterior margin with 2 transparent spots in distal ¼ (forewing ( Fig. 1A ) uniformly yellowish brown in A. hainanensis gen. et sp. nov.); (2) lateral margins of basal part of vertex ( Fig. 6A ) with dark brown markings (lateral margins of basal part of vertex ( Fig. 2A ) without dark brown markings in A. hainanensis gen. et sp. nov.); (3) pygofer ( Fig. 6G ) with ventral margin concave U-shaped medially (pygofer ( Fig. 2G ) with ventral margin concave W-shaped medially in A. hainanensis gen. et sp. nov.).

Figures

Fig. 5. Aodingus cuongi gen. et sp. nov., holotype (GUGU-FS-TA-20190601). 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. 6. Aodingus cuongi gen. et sp. nov., holotype (GUGU-FS-TA-20190601). 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.

Fig. 7. Adults and nymphs of Aodingus cuongi gen. et sp. nov. resting on the bamboo shoot of Dendrocalamus membranaceus Munro, 1868. Photograph by Ha-Viet Cuong.

Fig. 8. Adults and nymphs of Aodingus cuongi gen. et sp. nov. resting on the bamboo shoot of Dendrocalamus membranaceus Munro, 1868. Photograph by Ha-Viet Cuong.

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.