Key to the species of the genus Caraphia

1. Elytra provided with rows of scales nearly alternately associated with rows of foveae................................ 2

- Elytra provided with rows of scales mostly along every row of foveae........................................... 11

2. Antenna with scape short and robust, not reaching the anterior margin of pronotum................................. 3

- Antenna with scape long and slender, exceeding the anterior margin of pronotum................................... 6

3. Elytral disk longitudinally depressed beside suture and forming weak longitudinal ridges on apical half.................. 4

- Elytral disk flattened but not depressed beside suture; without ridges............................................. 5

4. Pronotum shorter than basal width, moderately constricted near apical fourth; scales on head and pronotum grayish yellow...................................................... C. cribrata Gahan, 1906 (Figs 6, 7, 8, 43, 50, 66, 82, 98, 114)

- Pronotum longer than basal width, strongly constricted near apical third; scales on head and pronotum orange yellow.................................................. C. depressa Holzschuh, 2003 (Figs 14, 15, 16, 45, 53, 69, 85, 101, 116)

5. Body smaller; head with interocular distance narrow, ca 0.3 times as wide as head............................................................................................... C. minor Gahan, 1906 (Figs 12, 13, 52, 68, 84, 100)

- Body larger; head with interocular distance wide, ca 0.5 times as wide as head................................................................................. C. granulifera Holzschuh, 1984 (Figs 9, 10, 11, 44, 51, 67, 83, 99, 115)

6. Body entirely black; pronotal disk strongly convex..... C. ebenina Holzschuh, 1989 (Figs 17, 18, 46, 54,, 70, 86, 102, 117)

- Body blackish brown to reddish brown. Pronotal disk not convex................................................ 7

7. Elytra short, about 2.3 times as long as elytral width.... C. seriata (Chemsak & Linsley, 1984) (Figs 40, 41, 64, 80, 96, 112)

- Elytra elongate, more than 2.5 times as long as elytral width.................................................... 8

8. Scales on the pronotum shortened on apical half besides median area and forming indistinct triple longitudinal vittae.................................................... C. laosica Gressitt & Rondon, 1970 (Figs 19, 20, 55, 71, 87, 103, 118)

- Scales on the pronotum uniform and not forming longitudinal vittae............................................. 9

9. Elytra more than 2.7 times as long as wide; parameres of tegmen long, 0.30 times as long as tegmen.............................................................. C. thailandica Hayashi & Villiers, 1987 (Figs 21, 22, 56, 72, 88, 104, 119)

- Elytra less than 2.5 times as long as wide; parameres of tegmen short, less than 0.2 times as long as tegmen............ 10

10. Antennae 1.3 times as long as body length; parameres of tegmen very short, 0.15 times as long as tegmen................................................................. C. borneana Vives, 2005 (Figs 23, 24, 47, 57, 73, 89, 105, 120)

- Antennae 1.5 times as long as body length; parameres of tegmen moderate in length, 0.23 times as long as tegmen.................................................................. C. huai sp. nov. (Figs 25, 26, 27, 58, 74, 90, 106, 121)

11. Scales of elytra spindle-shaped; sides of pronotum angulate or roundly inflated laterally near middle;................. 12

- Scales of elytra rod-shaped; sides of pronotum nearly straightly narrowed apically................................ 13

12. Scales of elytra ca 4 times as long as wide; elytral apex obliquely truncate..................................................................................... C. squamosa (Chemsak & Linsley, 1984) (Figs 39, 48,, 63, 79, 95, 111)

- Scales of elytra ca 6 times as long as wide; elytral apex roundly narrowed to sutural angles................................................................................... C. lingafelteri sp. nov. (Figs 42, 49, 65, 81, 97, 113, 127)

13. Antennae long, apical 4 segments exceeding elytral apex.................................................... 14

- Antennae with apical 1 to 3 segments exceeding elytral apex................................................. 15

14. Body larger; parameres of tegmen moderate in length, 0.22 times as long as tegmen: tegmen with dorsal plate shorter than ven- tral plate.................................... C. taiwana Chou & Ohbayashi, 2008 (Figs 35, 36, 61, 77, 93, 109, 125)

- Body smaller; parameres of tegmen short, 0.18 times as long as tegmen; tegmen with dorsal plate as long as ventral plate.......................................................... C. paulastoni sp. nov. (Figs 37, 38,, 62, 78, 94, 110, 126)

15. Elytra elongate, about 2.7–2.8 times as long as elytral width; antenna with scape subequal to 3rd......................................................................... C. laticeps (Pic, 1922) (Figs 28, 29, 30, 31, 59, 75, 91, 107, 122)

- Elytra rather short, about 2.5–2.6 times as long as elytral width; antenna with scape 1.2 times as long as 3rd............. 16

16. Pronotum with sides straight and converging apically............................................................................................ C. lepturoides lepturoides (Matsushita, 1933) (Figs 1–5, 32, 33, 60, 76, 92, 108, 123

- Pronotum with sides gently swollen laterally....................... C. lepturoides babai Makihara, 1982 (Figs 34, 124)