Bambusiphaga kunmingensis, Yang, Lin & Chen, Xiang-Sheng, 2011

Yang, Lin & Chen, Xiang-Sheng, 2011, The Oriental bamboo-feeding genus Bambusiphaga Huang & Ding, 1979 (Hemiptera: Delphacidae: Tropidocephalini): a checklist, a key to the species and descriptions of two new species, Zootaxa 2879, pp. 50-59 : 50-59

Bambusiphaga kunmingensis sp. nov.

( Figs 1–10 )

Description. Body length (from apex of vertex to tip of forewings): male 4.30 (N = 1); female 4.55–4.80 mm (N = 3); forewing length: male 3.62 (N = 1); female 4.00– 4.15 mm (N = 3).

Coloration. General color yellowish white to yellowish brown, with blackish brown markings ( Figs 1–3 ). Vertex ( Fig. 1 ) yellowish white, lateral carinae pale brown. Frons and clypeus ( Fig. 2 ) yellowish white, lateral sides of anteclypeus brown. Genae ( Fig. 2 ) dark brown. Ocelli reddish brown, eyes reddish brown to dark brown. Antennae ( Fig. 2 ) yellowish white except dorsal part of basal segment dark brown. Pronotum ( Fig. 2 ) blackish brown, except apical 1/3, median carina and its lateral sides and posterior margin yellowish white. Mesonotum ( Fig. 2 ) blackish brown, except apex of scutellum yellowish white to yellowish brown. Forewings ( Fig. 3 ) pale yellowish white, almost hyaline, except basal 1/3 dark brown; hindwings ( Fig. 4 ) pale yellowish white, with central area of base and transverse venation pale brown to brown. Lateral areas of pro- and mesothorax blackish brown. Fore and median legs yellowish white, except coxae blackish brown, hind legs yellowish white. Abdomen with dorsal areas dark brown, lateral areas somewhat reddish brown, ventral areas dark brown with posterior margin of each segment yellowish brown to reddish brown. Genital segment brown to dark brown, anal style yellowish brown, genital styles ( Figs 6, 8, 9 ) blackish brown.

Head and thorax. Vertex shorter in middle line than wide at base (0.85:1), width at apex narrower than at base (0.82:1), anterior margin truncate, lateral and submedian carinae distinct, median carina indistinct. Frons 2.56 times longer in middle line than widest part, as wide at base as at apex. Base of postclypeus as wide apex of frons. Antennae with basal segment subequal to broad, shorter than second segment (0.24:1). Pronotum as long as vertex. Mesonotum 1.50 times as long as vertex and pronotum together in middle line. Forewings ( Fig. 3 ) longer in middle line than broad at widest part (2.76:1), transverse venation located in middle near base. Hindwings ( Fig. 4 ) narrow and long, longer in middle line than broad at widest part (2.64:1).

Male genitalia. Anal segment ( Figs 5, 6 ) short, ring-like, ventral margin without a process. Pygofer in profile ( Fig. 5 ) with dorsal margin shorter than ventral margin, laterodorsal angle blunt and rounded, posterior margin slightly sinuate; in posterior view ( Figs 6, 7 ), with opening longer than wide, ventral margin broadly concave, without medioventral process. Aedeagus in profile ( Fig. 10 ) tubular, parallel, apical portion curved ventrally, apex rounded, membranous; gonopore at apex, node-like; pallobase arising from dorsobase of aedeagus, as long as aedeagus, stout spine-like, thick at base, tapering apically, turning right and then ventrad. Genital styles in posterior view ( Figs 6, 8 ) moderately long, narrow and divergent, lateral margins subparallel, sinuate, tapering apically, inner margin with an angular process near apical 1/4; in profile ( Fig. 9 ) apex acute and middle part strongly arched caudally.

Type material. Holotype 3, China: Yunnan, Kunming, Xishan Park (102°42´N, 25°04´E), collected from bamboo, 22 Aug. 2006 (Z.-G. Zhang) ( IEGU).

Paratypes: China: 3 ƤƤ, same data as holotype ( IEGU).

Host plant. Bamboo.

Distribution. Southwest China (Yunnan).

Remarks. This new species is similar to B. basifusca Hou & Chen, 2010 in general appearance, especially in the markings on the thorax and forewings, but can be distinguished by the frons and postclypeus yellowish white (frons with basal 2/3 and postclypeus dark brown in basifusca ); the ventral margin of anal segment without processes (ventral margin of anal segment with two long processes in basifusca ); the ventral margin of pygofer without medioventral processes (ventral margin of pygofer with three medioventral processes in basifusca ); and the aedeagus with apical half curved ventrally (aedeagus with apical half straight in basifusca ).

Based on characters of the male genitalia, this species cannot be placed in any of the seven species groups of Bambusiphaga mentioned above. It remains solitary within the genus and can be characterized as follows: anal segment ring-like, without process; pygofer without any processes on lateral and ventral margins; genital styles moderately long, apex forked; aedeagus with developed spine-like pallobase.

Etymology. This species is named after the type locality, Kunming, Yunnan Province in China.

Figures

FIGURES 1 – 10. Bambusiphaga kunmingensis sp. nov. (1) Head and thorax; (2) Frons and clypeus; (3) Forewing; (4) Hindwing; (5) Male genitalia, lateral view; (6) Male genitalia, posterior view; (7) Pygofer, posterior view; (8) Genital style, posterior view; (9) Genital style, lateral view; (10) Aedeagus, lateral view. Scale bars = 1 mm (3, 4); 0.5 mm (1, 2); 0.2 mm (5 – 10).