Review of Chinese species of the leafhopper genus Scaphoidella Vilbaste, 1968 (Hemiptera, Cicadellidae, Deltocephalinae), with description of a new species

Abstract The Chinese leafhopper species of the genus Scaphoidella Vilbaste are reviewed, and one new species Scaphoidella dietrichi sp. n. is described and illustrated. Two species are recorded from China for the first time: Scaphoidella clavatella Dai & Dietrich, 2011 and Scaphoidella zhangi (Viraktamath & Mohan, 2004). A key based on the male genitalia is given to distinguish Chinese species of this genus and a map provided their geographic distribution. The type specimens of the new species is deposited in the Institute of Entomology, Guizhou University, Guiyang, China (GUGC).


Introduction
The leafhopper genus Scaphoidella was established by  for S. arboricola Vilbaste from the Maritime Territory of Russia. It belongs to the tribe Scaphoideini of subfamily Deltocephalinae (Zahniser & Dietrich, 2013). Recently,  reviewed this genus and described ten new species from Thailand and Vietnam and at the same time, two new combinations Scaphoidella zhangi (Viraktamath & Mohan, 2004), and S. punctulata (Melichar, 1903) were proposed (both previously placed in the genus Scaphoideus), the species S. datianensis Xing, Dai & Li, 2008 was placed in the genus Monobazus, and S. transversa Li & Xing, 2009 was excluded from Scaphoidella and treated as a species incertae sedis. The species S. denticlestyla Li, 2010 (see Chen, Li andJin 2010) and S. brevissima  in Scaphoidella (not listed in the checklist of ) are discussed below, bringing the total of known species to 20, including eight from China. In this paper, a new species: Scaphoidella dietrichi sp. n. is described and illustrated from Yunnan Province, China, and S. clavatella S. zhangi (Viraktamath &Mohan, 2004) are recorded from China for the first time. The type specimens of the new species is deposited in the Institute of Entomology, Guizhou University, Guiyang, China (GUGC). The genus Scaphoidella now contains 21 species including 11 from China. A key is given to separate the Chinese species.

Material and methods
Terminology of morphological and genital characters follow Zhang and Dai (2006) and . Male specimens were used for the description and illustration. External morphology was observed under a stereoscopic microscope and characters were measured with an ocular micrometer. Color pictures for adult habitus were obtained by 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 Canon CanoScan LiDE 200 and imported into Adobe Photoshop 8 for labeling and plate composition. Scaphoidella Vilbaste, 1968: 133;Zhang and Dai 2006: 841;Li, Dai and Xing 2011: 199;Dai and Dietrich 2011: 458. Type species. Scaphoidella arboricola Vilbaste, 1968. For the relationship and diagnosis of Scaphoidella Vilbaste see Dai and Dietrich (2011: 458 Pygofer side with caudal margin round, without spine (Fig. 19) .... S. clavatella -Pygofer side with ventrally directed spine on caudal margin (Fig. 37) ...S. zhangi 3

Scaphoidella clavatella Dai & Dietrich, 2011
Note. This species was described from Thailand (Loei) based on two male specimens (QSBG and INHS). This species is here recorded from China for the first time.   Distribution. China (Guizhou) (Fig. 43).

Scaphoidella denticlestyla Xing & Li, 2010
Note. This species was described from China (Guizhou) based on two male specimens deposited in GUGC. As the original figures of Li (in Chen et al. 2010 and are not very perfect the male genitalia are redrawn here by the first author. Description. Body ochraceous. Head with piceous submargial band on anterior margin, one transverse arcuate band between eyes anteriorly, narrowly margined with piceous, orange red (Figs 9, 11). Face with thin, arcuate, piceous submarginal band (Fig. 12). Pronotum with anterior brown and posterior submarginal chocolate brown transverse bands (Fig. 11). Forewing ochraceous, with hyaline spots (Figs 9, 10).
Note. This species is here recorded from China for the first time.