Neobelocera Ding & Yang, 1986

LI, Hong-Xing, Yang, Lin & Chen, Xiang-Sheng, 2020, Two new species of the bamboo-feeding planthopper genus Neobelocera Ding & Yang, 1986 from China (Hemiptera, Fulgoroidea, Delphacidae), European Journal of Taxonomy 641, pp. 1-14 : 3-4

Key to species (males) of Neobelocera Ding & Yang, 1986 (revised from Hu & Ding 2014)

1. Forewings yellowish white, hyaline, with a small dark brown marking on furcation of ScP ( Hu & Ding 2014: fig. 10) ......................................................................... N. medogensis Hu & Ding, 2014

– Forewings with blackish brown marking, of which veins with white spots or white short stripes at intervals ( Figs 1F , 3F ) ....................................................................................................................... 2

2. Frons with pale transverse band below level of lower margin of eyes ( Figs 1E , 2B , 3E , 4B ) ......... 3 – Frons without transverse band ( Chen & Liang 2005: fig. 10) .......................................................... 6

3. Ventral margin of pygofer with 3 medioventral processes ( Fig. 4D ) ............................................... 4 – Ventral margin of pygofer concave medially, without process ( Fig. 2F ) ......................................... 5

4. Frons with some short, yellowish white transverse stripes subapically; genae with 2–3 light brown spots ( Fig. 3E ); pygofer with medioventral processes short, median one slightly longer than lateral ones ( Fig. 4D ) .......................................................................................................... N. russa sp. nov.

– Frons without yellowish white transverse stripe subapically; genae without light brown spot ( Chen 2003: fig. 3); medioventral processes of pygofer with median one short, lateral ones very slender and long ( Chen 2003: fig. 4) ......................................................................... N. lanpingensis Chen, 2003

5. Phallus with basal half broad, compressed, apical half slender, tubular, acute at apex, with process at basal ¼ and node subapically; phallobase with long straight spinous process basally and three processes apically ( Fig. 2G ) ................................... N. biprocessa sp. nov.

– Phallus slender, tubular, rounded at apex, without process and node; phallobase slender, without process ( Ding et al. 1986: figs 6–4) .......................................... N. asymmetrica Ding & Yang, 1986

6. Median carina of vertex, pronotum, mesonotum and frons white bordered with dark brown to blackish brown ( Chen & Liang 2005: figs 9–10) ............................................................................. 7

– Not as above, forewings at basal part and hind margin of apical part with blackish brown markings ( Hou & Chen 2010: fig. 19); ventral margin of pygofer concave medially, lateral side of which each with a short process ( Hou & Chen 2010: fig. 24) ........................................ N. lii Hou & Chen, 2010

7. Pygofer with ventral margin concave medially, on lateral side each with a long, slender process ( Chen & Liang 2005: fig. 12); genital styles slender and long, with a spine-like process subapically ( Chen & Liang 2005: figs 15–16) .............................................. N. laterospina Chen & Liang, 2005

– Pygofer with ventral margin without any process (Qin & Yuan 1998: fig. 1D) ............................... 8

8. Genital styles long, parallel and slightly sinuate, with inner apical angle acute, without process ( Ding 2006: fig. 100C) ......................................................................... N. zhejiangensis ( Zhu, 1988)

– Genital styles rather robust, apex acute, with branch lateral process terminating with 3–5 spinose processes (Qin & Yuan 1998: fig. 1F–G) ...................................... N. hanyinensis Qin & Yuan, 1998

Figures

Fig. 1. Neobelocera biprocessa sp. nov., holotype (GUGC-FS-TN-20090401) A. Male habitus, dorsal view. B. Same, lateral view. C. Head and thorax, dorsal view. D. Same, lateral view. E. Face. F. Forewing.

Fig. 3. Neobelocera russa sp. nov., holotype (GUGC-FS-TN-20100801). A. Male habitus, dorsal view. B. Same, lateral view. C. Head and thorax, dorsal view. D. Same, lateral view. E. Face. F. Forewing.

Fig. 2. Neobelocera biprocessa sp. nov., holotype (GUGC-FS-TN-20090401). A. Head and thorax, dorsal view. B. Face. C. Forewing. D. Male genitalia, posterior view. E. Same, lateral view. F. Pygofer, posterior view. G. Anal segment and aedeagus, lateral view. H. Genital style, posterior view. I. Same, lateral view. Scale bars: A–B, D–I = 0.2 mm; C = 0.5 mm.

Fig. 4. Neobelocera russa sp. nov., holotype (GUGC-FS-TN-20100801). A. Head and thorax, dorsal view. B. Face. C. Forewing. D. Male genitalia, posterior view. E. Same, lateral view. F. Aedeagus, posterior view. G. Same, lateral view. H. Genital style, posterior view. I. Same, lateral view. Scale bars: A–B, D–I = 0.2 mm; C = 0.5 mm.