Chlorophorus

Zong, Shi-Xiang, Xie, Guang-Lin, Wang, Wen-Kai, Luo, Youqing & Cao, Chuan-Jian, 2012, A new species of Chlorophorus Chevrolat (Coleoptera: Cerambycidae: Cerambycinae) from China with description of biology, Zootaxa 3157, pp. 54-60 : 58-59

Key to species of the genus Chlorophorus occurring in northern China

1. Pronotum without any markings.......................................................................... 2

- Pronotum marked with dark spots or stripes................................................................. 5

2. Elytra with markings................................................................................... 3

- Elytra uniformly covered with olive green pubescence, not formed markings................ C. eleodes (Fairmaire, 1889)

3. Elytra with distinct dark bands or stripes................................................................... 4

- Elytra densely covered with grayish white or grayish yellow pubescence, with unconspicuous dark stripes................................................................................................... C. caragana sp. nov.

4. Elytra densely covered with grayish green pubescence, middle band of elytra not joined at suture................................................................................................... C. eckweileri Holzschuh, 1992

- Elytra covered with yellowish-brown or grayish yellow pubescence, middle band of each elytron joined at suture and extends forward along suture................................................... C. signaticollis (Castelnau et Gory, 1855)

5. Pronotum without inverted Y-shape marking on disk.......................................................... 6

- Pronotum with an inverted Y-shape black marking at center and an oblique marking on each side of its anterior end; dorsal pubescence orange-yellow; middle band of elytra extends well forward along suture, posterior spot of each elytron subrounded............................................................................. C. annularis (Fabricius, 1787)

6. Elytra black with pale spots or bands...................................................................... 7

- Elytra mostly covered with light-colored pubescence, marked with dark spots or bands............................. 10

7. Longitudinal spot in basal lunular marking of each elytron not long-oval, postmedian elytral band narrow............... 8

- A longitudinal, long-oval whitish spot present in basal lunular marking of each elytron and another transverse spot at its outer- margin, postmedian elytral band very broad; a large, black middle spot with concave posterior edge on disk of pronotum, and a smaller black round spot on each side of pronotum..................... C. macaumensis macaumensis (Chevrolat, 1845)

8. Pronotal disk with long erect hairs....................................................................... 9

- Pronotal disk only with depressed pubescence, third and fourth pubescence bands on elytra not joined along suture; elytral api- ces obliquely truncate............................................... C. diaedema diaedema (Motschulsky, 1853)

9. Elytra brownish black, third elytral band distinctly widened forward at suture, third and fourth bands nearly joined along suture, elytral apices transversely truncate................................... C. latofasciatus (Motschulsky, 1861)

- Elytra black, third elytral band slightly widened forward at suture, third and fourth bands not nearly joined along suture................................................................................... C. figuratus (Scopoli, 1763)

10. Basal lunular marking of each elytron not widely open externally............................................... 11

- Basal lunular marking of each elytron very widely open externally, or broken at several points....................... 15

11. External angles of elytral apices unconspicuous or slightly prominent........................................... 12

- External angles of elytral apices moderately prominent....................................................... 13

12. Black spot at center of pronotal disk small, slightly transverse, each side of pronotum with a smaller distinct spot; posterior black spot of each elytron triangular, narrow at suture.................................... C. separatus Gressitt, 1940

- Middle pronotal spot large, each side of pronotum with a smaller indistinct spot; posterior black spot of each elytron broad, not nearly narrow at suture......................................................... C. japonicus (Chevrolat, 1863)

13. Basal lunular marking of each elytron closed anteriorly, sometimes slightly open.................................. 14

- Basal lunular marking of each elytron widely open; middle band divided on each elytron, not joined at suture; posterior band consisting of a large black spot on each elytron, also not joined at suture........... C. tredecimmaculatus (Chevrolat, 1863)

14. Disk of pronotum with two merging spots at center and a smaller black spot at each side, posterior band of each elytron not nearly joined at suture, elytral apices approximately transverse, external angles of elytra not prominent..................................................................................................... C. miwai Gressitt, 1936

- Disk of pronotum with a conspicuous, irregular transverse band at center, sometime broken at middle, posterior band of each elytron joined at suture, elytral apices obliquely truncate, external angles of elytra prominent.. C. varius varius (Müller, 1766)

15. Middle spot on disc of pronotum not nearly transverse, each side of pronotum with smaller black spot................. 16

- Middle spot on pronotum distinctly transverse, end of basal lunule marking of each elytron meeting middle black spot of each elytron near exernal margin, posterior spot triangular.............................. C. obliteratus (Ganglbauer, 1889)

16. Base of each elytron with distinct lunule marking, sometimes lunule marking not regular............................ 17

- Base of each elytron with two or three irreular black spots, not forming lunule marking, middle spot of each elytron not joined at suture, also posterior spots not joined at suture................................ C. faldermanni (Faldermann, 1837)

17. Posterior margin of middle spot of pronotum very emarginate, inverted V-shape................................... 18

- Middle spot of pronotum large, posterior margin quite straight, not inverted V-shape; middle spot of each elytron not joined at suture, also posterior spots not joined at suture.......................................... C. herbstii (Brahm, 1790)

18. Pronotum with a large, broad inverted V-shape black spot at center, middle black spot of each elytron not joined at suture.................................................................................. C. simillimus (Kraatz, 1879)

- Pronotum with a small inverted V-shape black spot at center, sometime unconspicuous; middle band of each elytron joined at suture and extending forward along suture.................................... C. signaticollis (Laporte&Gory, 1836)