A key to the bamboo-feeding genus Bambusana Anufriev (Hemiptera, Cicadellidae, Deltocephalinae, Athysanini), with description of one new species from China

Abstract A new species of the bamboo-feeding leafhopper genus Bambusana Anufriev, 1969, B.longispina Luo & Chen, sp. nov. is described and illustrated from China (Yunnan Province). A checklist and key to known species of this genus are provided. Figures are also provided for B.bambusae, B.biflaka, B.fopingensis and B.multidentata.


Introduction
The leafhopper genus Bambusana (Deltocephalinae, Athysanini) was established by Anufriev (1969) with two species: B. bambusae (Matsumura, 1914) (type species) and B. jenjouristi Anufriev, 1969 from Japan. Later, Anufriev and Emeljanov (1988) reported B. bambusae from the Soviet Far East. Dai and Zhang (2006) first recorded this genus from China and described two new species: B. fopingensis and B. multidentata, and reported B. bambusae from China. Recently, Li (in Li et al. 2011) described two new species from China: B. biflaka and B. nigrimaculata, and recognized B. fopingensis as a junior synonym of B. multidentata in their study but did not provide any justification for the synonymy. We here still recognize B. fopingensis as a valid species based on the pygofer with a strong ventro-caudal process which is significantly different from B. multidentata.
In this paper, a new species, B. longispina sp. nov. is described and illustrated from Yunnan Province, China bringing the total in the genus to seven (six from China); see key.

Material and methods
The terminology of morphological and genital characters follows Li et al. (2011) andZahniser andDietrich (2013). Male specimens were used for the descriptions and illustrations. External morphology was observed under a stereoscopic microscope and characters were measured with an ocular micrometer. Color pictures for adult habitus were obtained by using the KEYENCE VHX-1000 system. The genital segments of the examined specimens were macerated in 10% NaOH and drawn from preparations in glycerin jelly using a Leica MZ 12.5 stereomicroscope. Illustrations were scanned with a Canon CanoScan LiDE 200 and imported into Adobe Photoshop CS8 for labeling and plate composition.
The type specimens of the new species are deposited in the Institute of Entomology, Guizhou University, Guiyang, China (IEGU). Anufriev, 1969Figs 1-51 Bambusana Anufriev, 1969Dai and Zhang 2006: 63;Li et al. 2011: 40. Type species. Thamnotettix bambusae Matsumura, 1914, by original designation. Diagnosis. This genus can be differentiated from other genera of Athysanini by the follow characters: relatively elongate leafhoppers with crown slightly longer medially than next to eyes; male pygofer side elongate, with one or two well sclerotized processes on ventral margin; subgenital plate usually elongate, triangular; aedeagus with basal apodeme usually present, shaft with or without small distal processes; gonopore apical or apical on ventral surface.
Male genitalia. Pygofer elongate in profile, ventral margin with two elongate acute processes at distal one-third and subapically (Figs 7, 8), with a few fine teeth-like processes along ventroposterior margin (Fig. 8). Valve triangular, basal width slightly longer than median length (1.42:1) (Fig. 15). Subgenital plate elongate, triangular; with uniseriate row of ventral macrosetae along lateral margin; apical margin rounded with very short fine setae (Fig. 15). Connective Y-shape, shaft robust, similar length to arms (Fig. 13). Styles (Figs 10, 13) elongate, with apophysis relatively long and stout with small subapical tooth-like process from inner margin (Figs 12,13). Aedeagus with basal apodeme absent; shaft elongate, cylindrical, tapering to acute apex, with two pairs of small triangle processes near apex (Figs 9-11); with subbasal elongate medial process from ventral margin, directed dorsally; with short preatrium.  Female genitalia. Sternite VII (Fig. 16) with anterior margin nearly straight and posterior margin strongly convex with blunt median tooth. First valvula (Figs 17, 18) curved, tapering apically with strigate sculpture extended to dorsal margin. Second valvula (Figs 19,20) broad, gradually tapered to acute apex; dorsal margin with numerous small triangular teeth; with dorsal sclerotized and hyaline region. Remarks. This new species is similar to B. bambusae, but can be distinguished from the latter by: aedeagus with a long medial process subbasally from ventral margin, directed dorsally (Figs 10, 11) (aedeagus with a tooth-like ventro-basal process, directed ventrally in bambusae); shaft long and tapered to apex, with two pairs of small triangle processes near apex (Figs 9-11) (shaft without process subapically in bambusae).
Etymology. The name is derived from the Latin words "longus" and "spina", referring to the aedeagus with a long spinous process near base (Fig. 11).