Bambusiphaga Huang & Ding

Yang, Lin & Chen, Xiang-Sheng, 2011, The Oriental bamboo-feeding genus Bambusiphaga Huang & Ding, 1979 (Hemiptera: Delphacidae: Tropidocephalini): a checklist, a key to the species and descriptions of two new species, Zootaxa 2879, pp. 50-59 : 50-59

Key to species of Bambusiphaga Huang & Ding (male)

1. Vertex dark brown or with blackish-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............................................................. B. nigropunctata

- Vertex dark brown, basal compartment of vertex without a black oval spot; anal segment with a very long process which sur- passes base of genital styles; pygofer with conjugated medioventral processes........................... B. pianmaensis

3. Mesonotum with blackish-brown markings................................................................. 4

- Mesonotum without blackish-brown markings............................................................... 9

4. Pronotum with blackish-brown markings on lateral areas; forewings with blackish-brown markings on basal half.......... 5

- Pronotum and forewings not as above..................................................................... 8

5. Forewings with basal 1/3 black........................................................................... 6

- Forewings with a large black marking at base...................................................... B. maculata

6. Anal segment without a process on ventral margin........................................ B. kunmingensis sp. nov.

- Anal segment with a very long process on ventral margin...................................................... 7

7. Pygofer with three medioventral processes........................................................ .. B. basifusca

- Pygofer without medioventral processes.............................................................. B. fascia

8. Forewings somewhat reddish-orange, costal margin blackish-brown; genital styles relatively broad and short.................................................................................................... B. nigromarginata

- Forewings somewhat yellowish-brown, costal margin yellowish-brown; genital styles relatively slender...... B. taiwanensis

9. Anal segment with a process on ventral margin............................................................. 10

- Anal segment without a process on ventral margin.......................................................... 14

10. Pygofer with a medioventral process................................................................ B. bakeri

- Pygofer without a medioventral process................................................................... 11

11. Anal segment with the process on ventral margin very long, reaching ventral margin of pygofer...................... 12

- Anal segment with the process on ventral margin very short................................................... 13

12. Body length of male 3.5–3.6 mm; genital styles with a process at base................................ B. jinghongensis

- Body length of male 4.3 mm; genital styles without a process at base.................................... B. mirostylis

13. Tegula with apical 1/2 blackish-brown; pygofer with hind margin produced at an acute angle medially; genital styles slender; aedeagus without phallobase...................................................................... B. huangi

- Tegula fully yellowish-brown; pygofer with hind margin not produced medially; genital styles broad and short; aedeagus with developed phallobase...................................................................... B. wangmoensis

14. Pygofer with a spine on ventral margin.................................................................... 15

- Pygofer without a spine on ventral margin................................................................. 17

15. Genital style with an inversed spine on caudal side near apex which is as long as 1/5 of genital style ( Figs 18, 20, 21 ); aedeagus with three spines subapically................................................................ B. yangi sp. nov.

- Genital style with an angular or tooth-like process on caudal side near apex; aedeagus without spines subapically........ 16

16. 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 1/3............................................. B. singaporensis

- Genital styles symmetrical; aedeagus without any processes......................................... B. luodianensis

17. Genital styles with a finger-like process at base............................................................. 18

- Genital styles without a finger-like process at base........................................................... 19

18. Genital styles with a finger-like process subapically; aedeagus curved in middle......................... B. maolanensis

- Genital styles with a lamellate process subapically; aedeagus almost straight............................ B. hainanensis

19. Genital styles forked apically............................................................................ 20

- Genital styles not forked apically........................................................................ 22

20. 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.............................................................................. B. membranacea

- 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......................................................................................... 21

21. Median portion of genital styles granulate............................................................. B. furca

- Median portion of genital styles not granulate......................................................... B. lynchi

22. Ventral margin of anal segment incised medially; genital styles short, lamellate......................... B. lacticolorata

- Ventral margin of anal segment not incised medially; genital styles slender........................................ 23

23. Apex of vertex obviously broadened, frons widest at base; apex of genital styles without small teeth; aedeagus short and stout.............................................................................................. B. similis

- Apex of vertex not broadened, frons widest at apex; apex of genital styles with several small teeth; aedeagus relatively long........................................................................................... B. citricolorata

Figures

FIGURES 11 – 22. Bambusiphaga yangi sp. nov. (11) Head and thorax; (12) Frons and clypeus; (13) Forewing; (14) Hindwing; (15) Anal segment and suspensorium, ventral view; (16) Male genitalia, lateral view; (17) Pygofer, lateral view; (18) Male genitalia, posterior view; (19) Pygofer, posterior view; (20) Genital styles, posterior view; (21) Genital style, lateral view; (22) Anal segment, suspensorium, aedeagus, connective and genital style, lateral view. Scale bars = 0.5 mm (14); 0.4 mm (13); 0.2 mm (11, 12, 15 – 22).