Scaphoideus albovittatus Matsumura, 1914

Chen, Fangying, Dai, Wu & Zhang, Yalin, 2015, Review of species of the Scaphoideus albovittatus group (Hemiptera, Cicadellidae, Deltocephalinae) from China, with a checklist and distribution summary for Chinese species in the genus, Zootaxa 3904 (3), pp. 334-358 : 339-343

Scaphoideus albovittatus Matsumura, 1914

( Figs. 1 A–D, F–I, K–N, 3A, 4A, 4E, 5A–H, 6A–D, 7A–P, 14A–C, 15A–C, 16A–C)

Scaphoideus albovittatus Matsumura, 1914:224 ; Ishihara, 1961: 252; Okada, 1977: 192; Li & Wang, 1991: 188; Cai & Shen, 1999: 243; Cai & Shen, 2002: 276; Kamitani & Hayashi, 2013:515 .

Scaphoideus albivittatus [sic], Li & Chen, 2002: 197; Li & Wang, 2006:184; Li et al., 2007: 160; Xing & Li, 2010: 137; Li et al., 2011: 209.

Body including forewings at rest moderately elongate. Head including eyes slightly narrower than pronotum. Crown prominently produced anteriorly, longer medially than next to eyes, medial length 1.4 times as long as width between eyes, narrowly rounded to face, disc smooth with shagreened patches ( Figs. 1 A, 3A). Eyes fairly large ( Fig. 1 F). Ocelli situated on anterior margin of crown and separate from eye by distance less than ocellar diameter. Frontoclypeus narrow, longer than width between eyes. Clypellus widened apically. Gena slightly incised below eye ( Fig. 1 K). Pronotum slightly shorter than head, with anterior margin roundly produced and posterior margin slightly concave. Scutellum nearly equal to length of head, suture curved ( Figs. 1 A, 3A). Forewing semitransparent, with appendix wide, outer anteapical cell acute apically; inner anteapical cell closed basally; two reflexed cross veins between outer anteapical cell and costal margin, without reflexed vein basad of outer anteapical cell ( Fig. 1 F).

Body pale brown with whitish longitudinal stripe from tip of vertex to near apex of forewing ( Fig. 1 A). Vertex with pair of small black spots near apex and pair of large irregular black spots near ocelli ( Figs. 1 A, 3A); frontoclypeus pale yellow with a narrow blackish stripe along apex margin touching spot at apex of vertex and wide blackish arc across antennal pits; clypellus and lorum pale yellow; gena pale yellow with blackish marking below antenna ( Fig. 1 K). Pronotum brown on lateral margin, with pairs of dark brown patches. Scutellum brown on lateral margin, with 2 small orange spots at center ( Figs. 1 A, F, 3A). Forewing transparent with brown veins, darker at base and apex ( Fig. 1 A, F).

Male genitalia. Male pygofer very long and gradually tapered posteriorly, with row of very long macrosetae apically and scattered short macrosetae from subapex to middle ( Fig. 5A–H ). Subgenital plate short, extending 1/2 length of pygofer, distinctly widened basally, with uniseriate row of 2-3 macrosetae near base, and fine setae along lateral margin from base to middle ( Fig. 6A–D ). Style with broad anterior part and discernable preapical lobe; apophysis short, curved laterally ( Figs. 6A–D , 7 B, F, J, N). Connective with anterior arms nearly parallel; posterior processes of uniform width for most of length, in distal 1/3 gradually tapered and pointed apically, in lateral aspect curved and strongly narrowed distally( Figs. 6A–D , 7 A, E, I, M). Aedeagus robust; shaft longer than basal apodeme in lateral view, narrowed distally and curved dorsally at apex; gonopore subapical on ventral surface ( Fig. 7 C, D, G, H, K, L, O, P).

Female genitalia. Abdominal sternite VII ( Fig. 4 A, E), in ventral view, broader than long, anterior margin straight; caudal margin deeply incised in middle, edge of incision blackish. First valvulae, in lateral view ( Fig. 14 A–C), distinctly curved dorsally and with dorsal margin concave, dorsal reticulate sculptured area located on apical half, broadening to near apex and gradually narrowing to apex. Second valvulae ( Fig. 15 A–C), in lateral view, distinctly expanded beyond basal curvature and abruptly narrowed near apex; apex narrowly acute; shaft bearing many triangular teeth distributed on apical half behind basal curvature, ducts extending toward dorsal margin and toward apical portion of shaft. Third valvulae ( Fig. 16 A-C), in lateral view, with basal half narrow and apical half distinctly expanded; apex prominently produced angularly.

Measurements. Male 4.5–5.7mm long, 1.11mm wide across eyes. Female 5.5–6.1mm long, 1.1–1.3mm wide across eyes.

Material examined. 6♂, 4♀, Shandong Prov., Yantai, Kunyushan, 12.vii.2001, Qin Daozheng and Liu Zhenjiang; 2♂, Shaanxi Prov., Yangxian, 22. VIII, Wei Cong and Shang Suqin; 3♂, 1♀, Hunan Prov., Hengshan, 7.viii.1985, Zhang Yalin and Chai Yonghui; 4♀, Hunan Prov., Hengshan, 8.viii.1985, Zhang Yalin and Chai Yonghui; 1♂, 1♀, Hunan Prov., Hengshan, 8.viii.1985, Zhang Yalin and Chai Yonghui; 1♀, Henan Prov., Xixia, Huangshian Forestry Farm, 7.vii.1998, Hu Jian; 1♀, Yunnan Prov., Juanyuanxian, 4.vi. 1974, Chou Io and Yuan Feng; 1♀, Hubei Prov., Tongshanxian, Hengshi, 9.viii.2001, Huangmin; 1♂, Hubei Prov., Dabieshan, Taohuachong, 26. vii.2014, Chen Fangying; 1♂, Hainan Prov., Jianfengling, 20.viii.2009, Gao Xia; 1♂, GuangxiProv., Longzhou, Sanlian, 14.vi.2000, Yao Jian.

Distribution. China (Guangxi, Guizhou, Hainan, Hebei, Henan, Hubei, Hunan, Shaanxi, Shandong, Sichuan, Xizang, Yunnan); Japan, Korea, Russia.

Remarks. Scaphoideus albovittatus Matsumura is a very common species throughout Eastern Asia. This species shows some variation in the external coloration and male genitalia among the specimens from northern to southern China, including forms from Shandong Prov. ( Figs. 1 A, F, K, 5A, B, 6A, 7A–D), Shaanxi Prov. ( Figs. 1 B, G, L, 5C, D, 6B, 7E–H), Hubei Prov. ( Figs. 1 C, H, M, 5E, F, 6C, 7I –L) and Guangxi Prov. ( Figs. 1 D, I, N, 5G, H, 6D, 7M–P). In the Shandong form, the shaft of the aedeagus is more slender ( Fig. 7 D) and the connective processes are less sinuate and straighter ( Figs. 6A , 7 A). Those from Shaanxi Prov. are similar to those from Shandong except the ventral margin of the aedeagal shaft is slightly convex ( Fig. 7 H). However, in the specimens from Hubei Prov., the aedeagus is robust and the connective processes are slightly curved ventrally ( Fig. 7 I-L) compared to those from northern Shandong and Shaanxi, and the aedeagus is more slender than those from southern Guangxi ( Fig. 7 P). From north to south, the pygofer becomes more slender, the shaft of aedeagus becomes stouter, and the connective processes become more curved ventrad. These differences are regarded as intraspecific variations, which can be expected in widely distributed species.

Figures

FIGURE 1. Habitus. A – E, Dorsal views. F – J, Lateral views. K – O, Face. A – D, F – I, K – N, Scaphoideus albovittatus Matsumura (A, F, K, from Shandong Prov.; B, G, L, from Shaanxi Prov.; C, H, M, from Hubei Prov.; D, I, N, from Guangxi Prov.); E, J, O, S. rostratus sp. nov.

FIGURE 4. Female abdomen and sternite VII, ventral view. A – D. Female abdomen, ventral view; E – H. Sternite VII, ventral view. A, E. S. albovittatus; B, F. S. coniceus; C, G. S. kumamotonis; D, H. S. maai.

FIGURE 7. Scaphoideus albovittatus Matsumura. A, E, I, M. Connective processes; B, F, J, N. Style, dorsal view; C, G, K, O. Aedeagus, ventral view; D, H, L, P. Aedeagus, lateral view. (A – D. from Shandong Prov.; E – H. from Shaanxi Prov. I – L. from Hubei Prov.; M – P. from Guangxi Prov.)

FIGURE 14. First valvulae of female ovipositor. A, D, G, J. First valvulae of female ovipositor, lateral view; B, E, H, K. Apical half of first valvulae; C, F, I, L. Enlarged view of first pair of valvulae in middle region. A – C. Scaphoideus albovittatus; D – F. Scaphoideus coniceus; G – I. Scaphoideus kumamotonis; J – L. Scaphoideus maai.

FIGURE 15. Second valvulae of female ovipositor. A, D, G, J. Second valvulae of female ovipositor, lateral view; B, E, H, K. Apical half of second valvulae; C, F, I, L. Enlarged view of second pair of valvulae in middle region. A – C. Scaphoideus albovittatus; D – F. Scaphoideus coniceus; G – I. Scaphoideus kumamotonis; J – L. Scaphoideus maai.

FIGURE 16. Third valvulae of female ovipositor. A, D, G, J. Third valvulae of female ovipositor, lateral view; B, E, H, K. Apical half of third valvulae; C, F, I, L, Enlarged view of third pair of valvulae in apex; A – C. Scaphoideus albovittatus; D – F. Scaphoideus coniceus; G – I. Scaphoideus kumamotonis; J – L. Scaphoideus maai.

FIGURE 5. A – H. Scaphoideus albovittatus Matsumura. A, C, E, G, Male pygofer, lateral view; B, D, F, H, Male pygofer, ventral view. (A – B, from Shandong Prov.; C – D, from Shaanxi Prov.; E – F, from Hubei Prov.; G-H, from Guangxi Prov.)

FIGURE 6. A – D. Valve, Subgenital plates, styles, connective of Scaphoideus albovittatus Matsumura, dorsal view. A. from Shandong Prov.; B. from Shaanxi Prov.; C. from Hubei Prov.; D. from Guangxi Prov.