Bambusiphaga Huang & Ding, 1979

Li, Hong-Xing, Chen, Xiang-Sheng & Yang, Lin, 2023, Three new species of the bamboo-feeding planthopper genus Bambusiphaga Huang & Ding from China (Hemiptera: Fulgoroidea: Delphacidae), European Journal of Taxonomy 875, pp. 142-158 : 143-146

Genus Bambusiphaga Huang & Ding, 1979

Type species

Bambusiphaga nigropunctata Huang & Ding, 1979 .

Diagnosis

Head including eyes narrower than pronotum. Vertex quadrate or rectangular, with submedian carinae uniting at apex of vertex. Frons rectangular, longer at middle line than wide (1.64–2.7:1), median carina distinct and simple. Antennae cylindrical, basal segment slightly longer than or equal to width, 2 nd segment longer than 1 st (more than 2.7:1), reaching or almost reaching frontoclypeal suture. Pronotum about as long as vertex, lateral carinae straight, reaching or almost reaching hind margin. Mesonotum longer at middle line than vertex and pronotum together (about 1.3–2.0:1). Spinal formula of hind leg 5-6-4. Post-tibial spur without teeth along posterior margin, but with an apical tooth. Forewings with cross vein deposited medially. Anal style small. Anal segment of male ring-like, ventral margin with or without a process. Pygofer with or without medioventral processes. Aedeagus with or without phyllobase; phallus complex, tubular. Genital styles simple, with a process, or forked apically. Seventh abdominal sternite of female present or absent.

Host plants

Bamboo (Bambusoideae).

Distribution

Oriental region, with highest species diversity in China.

Key to species of the genus Bambusiphaga Huang & Ding, 1979 (male)

(modified from Li et al. 2018)

1. Vertex dark brown or with dark brown markings ............................................................................. 2 – Vertex without any markings ............................................................................................................ 3

2. Vertex yellowish brown, basal compartment with a black oval spot in middle part; anal segment without a process, pygofer without medioventral processes ( Huang et al. 1979: figs 2, 4) ............... .............................................................................................. B. nigropunctata Huang & Ding, 1979

– Vertex dark brown, basal compartment without a black oval spot; anal segment with a very long process that surpasses base of genital styles; pygofer with conjugated medioventral processes ( Chen & Liang 2007: figs 46, 49) ....................................................... B. pianmaensis Chen & Liang, 2007

3. Mesonotum with dark brown markings ............................................................................................ 4 – Mesonotum without dark brown markings ..................................................................................... 14

4. Pronotum with dark brown markings on lateral areas ...................................................................... 5 – Pronotum without dark brown markings on lateral areas ............................................................... 12

5. Forewings with basal ⅓ black or with black markings at basal half ................................................ 6 – Forewings with a large irregular pale brown stripe along transverse vein, hence bending along posterior margin to apex ( Li et al. 2018: fig. 8) ............... B. yingjiangensis Li, Yang & Chen, 2018

6. Forewings with basal ⅓ black .......................................................................................................... 7 – Forewings with large black markings at base ................................................................................. 10

7. Anal segment without a process on ventral margin ( Yang & Chen 2011: fig. 6) ............................... ................................................................................................. B. kunmingensis Chen & Yang, 2011 – Anal segment with a very long process on ventral margin ............................................................... 8

8. Anal spiny process at left lateroapical angle of anal segment ......................................................... 9 – Anal spiny process at right lateroapical angle of anal segment ( Hou & Chen 2010: fig. 14) ............ .......................................................................................................... B. basifusca Hou & Chen, 2010

9. Pygofer with a medioventral process; aedeagus with two apical processes ( Qin et al. 2012: figs 12, 16–17) ........................................................................................................ B. taibaishana Qin, 2012 – Pygofer without medioventral process; aedeagus without apical processes ( Ding 2006: fig. 54c, f) ............................................................................................................. B. fascia Huang & Tian, 1980

10. Forewings with a large black marking at base; anal segment with a long process on ventral margin ..........................................................................................................................................................11 – Forewings with two large black markings at base; anal segment without process on ventral margin ( Li et al. 2018: figs 29, 31) .............................................. B. ventroprocessa Li, Yang & Chen, 2018 11. Anal segment with a long ventral process at left lateroapical angle; pygofer with medioventral process ( Chen et al. 2000: fig. 4) ........................................................ B. maculata Chen & Li, 2000

– Anal segment with a long ventral process medially; pygofer without medioventral process ( Fig. 6C, F ) ....................................................................................................................... B. nigrigena sp. nov.

12. Mesonotum without black marking in middle ( Ramya & Meshram 2019: fig. 3) ............................. ................................................................................................ B. unispina Ramya & Meshram, 2019 – Mesonotum with black markings in middle ................................................................................... 13

13. Forewings somewhat reddish orange, costal margin dark brown; genital styles relatively broad and short (Huang & Ding 1980: fig. 8c, f) .............................. B. nigromariginata Huang & Tian, 1980

– Forewings somewhat yellowish brown, costal margin yellowish brown; genital styles relatively slender ( Yang & Yang 1986: fig. 20c, e) ................................................ B. taiwanensis (Muir, 1917)

14. Anal segment with a process on ventral margin ............................................................................. 15 – Anal segment without a process on ventral margin ........................................................................ 19

15. Pygofer with a medioventral process ( Ding 2006: fig. 62c) ........................... B. bakeri ( Muir, 1919) – Pygofer without a medioventral proces .......................................................................................... 16

16. Anal segment with the process on ventral margin very long, reaching ventral margin of pygofer 17 – Anal segment with the process on ventral margin very short ......................................................... 18

17. Genital styles with a process at base, apex rounded ( Ding 2006: fig. 59f–g) ..................................... .................................................................................................... B. jinghongensis Ding & Hu, 1986

– Genital styles without a process at base, apex forked ( Huang et al. 1979: fig. 18) ............................ ...................................................................................................... B. mirostylis Huang & Ding, 1979

18. Tegula with apical½dark brown; pygofer with hind margin produced at an acute angle medially; genital styles slender; aedeagus without phyllobase ( Ding & Hu 1982: figs 1–4) B.huangi Ding&Hu,1982

– Tegula fully yellowish brown; pygofer with hind margin not produced medially; genital styles broad and short; aedeagus with developed phyllobase (Chen & Li 2000: figs 11, 13, 15– 16) ................................................................................................ B. wangmoensis Chen & Li, 2000

19. Pygofer with a spine on ventral margin .......................................................................................... 20 – Pygofer without a spine on ventral margin ..................................................................................... 22

20. Genital style with an inversed spine on caudal side near apex which is as long as 1 / 5 of genital style; aedeagus with three spines subapically ( Yang & Chen 2011: figs 20–22) B.yangi Chen& Yang,2011

– Genital style with an angular or tooth-like process on caudal side near apex; aedeagus without spines subapically ...................................................................................................................................... 21

21. Genital styles asymmetrical, right one shorter than left one, without tooth-like process subapically on caudal side; aedeagus with an inversed process on right side near apical ⅓ (Miur 1919: fig. 8) .................................................................................................. B. singaporensis ( Muir, 1919)

– Genital styles symmetrical; aedeagus without any processes ( Ding 1982: figs 3, 5) ......................... ................................................................................................................. B. luodianensis Ding, 1982

22. Genital styles with a finger-like process at base ............................................................................. 23 – Genital styles without a finger-like process at base ........................................................................ 24

23. Genital styles with a finger-like process subapically; aedeagus curved in middle ( Chen & Liang 2007: figs 20–22) ..................................................................... B. maolanensis Chen & Liang, 2007 – Genital styles with a lamellate process subapically; aedeagus almost straight ( Hou & Chen 2010: figs 9–10) .................................................................................... B. hainanensis Hou & Chen, 2010

24. Genital styles forked apically ......................................................................................................... 25 – Genital styles not forked apically ................................................................................................... 27

25. Frons longer at middle line than wide at widest part, about 2.0: 1; basocaudal portion of genital styles in profile produced at a right angle ( Yang & Yang 1986: fig. 22b, h) ............................................................................................. B. membranacea Yang & Yang, 1986

– Frons longer at middle line than wide at widest part, about 2.5: 1; basocaudal portion of genital styles in profile not produced at a right angle ................................................................................. 26

26. Median portion of genital styles granulate ( Huang et al. 1979: figs 8–11) ........................................ ............................................................................................................. B. furca Huang & Ding, 1979 – Median portion of genital styles not granulate (Aschi 1983: fig. 4) ............... B. lynchi Asche, 1983

27. Ventral margin of anal segment incised medially; genital styles short, lamellate ( Huang et al. 1979: fig. 20) ..................................................................................... B. lacticolorata Huang & Ding, 1979 – Ventral margin of anal segment not incised medially; genital styles slender ................................. 28

28. Genital styles with a spinous process near apex ( Fig. 4F–G ) ......................................................... 29 – Genital styles without a spinous process near apex ........................................................................ 30

29. Aedeagus with some small teeth near apex, not forked at apex ( Fig. 2H–I ) ........ B. parvula sp. nov. – Aedeagus without small teeth near apex, forked at apex ( Fig. 4H–I ) ............... B. angulosa sp. nov.

30. Apex of vertex obviously broadened, frons widest at base; apex of genital styles without small teeth; aedeagus short and stout ( Huang et al. 1979: fig. 17) ....................... B. similis Huang & Tian, 1979 – Apex of vertex not broadened, frons widest at apex; apex of genital styles with several small teeth; aedeagus relatively long ( Huang et al. 1979: figs 13–15) ....... B. citricolorata Huang & Tian, 1979

Figures

Fig. 6. Bambusiphaga nigrigena sp. nov., ♂., holotype (GUGU-DE-BA-20190701). A. Head and thorax, dorsal view. B. Face. C. Male genitalia, posterior view. D. Male genitalia, lateral view. E. Anal segment, aedeagus and genital style, lateral view. F. Anal segment, dorsal view. G. Genital style, posterior view. H. Genital style, lateral view. I. Aedeagus, lateral view. Scale bars: A–B = 0.5 mm; C–I = 0.2 mm.

Fig. 4. Bambusiphaga angulosa sp. nov, ♂., holotype (GUGU-DE-BA-20180807). A. Head and thorax, dorsal view. B. Face. C. Male genitalia, posterior view. D. Male genitalia, lateral view. E. Pygofer, posterior view. F. Genital style, posterior view. G. Genital style, lateral view. H. Aedeagus, posterior view. I. Aedeagus, lateral view. Scale bars: A–B = 0.5 mm; C–G, I = 0.2 mm; H = 0.1 mm.

Fig. 2. Bambusiphaga parvula sp. nov., ♂, holotype (GUGU-DE-BA-20180801). A. Head and thorax, dorsal view. B. Face.C. Male genitalia, posterior view. D. Same, lateral view. E. Pygofer, posterior view. F. Genital style, posterior view. G. Genital style, lateral view. H. Aedeagus, posterior view. I. Aedeagus, lateral view. Scale bars: A–B = 0.5mm; C–I = 0.2 mm.