Key to Cryptognatha species

1. Elytron immaculate, entirely yellow, brownish yellow, or black......................... 2

— Elytron maculate, with pale maculae on dark background, or with dark maculae on pale back- ground................................................................... 3

2(1). Elytron entirely yellow, brownish yellow (Fig. 1)............... 1. C. auriculata Mulsant — Elytron entirely black.......................................................... 13

3(1). Elytron with pale maculae on dark background...................................... 9 — Elytron with dark maculae on pale background...................................... 4

4(3). Maculae simple, usually single macula on lateral margin, occasionally with indistinct macula on sutural basal border...................................................... 5

— Maculae composed of multiple maculae on elytral surface............................. 7

5(4). Maculae consisting of short, dark maculae on lateral border outside of humeral callus and sometimes with indistinct sutural macula in basal 1/2 (Fig. 55)................................................................. 10. C. karla González and Hanley, n. sp.

— Maculae consisting of single, complete macula on or near lateral margin from base of elytron to sutural margin in apical 1/2................................................... 6

6(5). Lateral macula wide, reaching lateral margin (Fig. 26)............. 5. C. amicta Gorham

— Lateral macula separated from lateral margin (Fig. 21)........................................................................ 4. C. pam González and Hanley, n. sp.

7(4). Maculae consisting of two short vittae in basal 1/2 of elytron, single macula in apical 1/2, and irregular sutural macula (Fig. 15)......................... 3. C. gemellata Mulsant

— Maculae differently arranged.................................................... 8

8(7). Dorsal pattern consisting of single large macula on basal ½ of elytron, two small maculae in basal apical 1/2, and irregular sutural vitta (Fig. 110)..................................................................... 21. C. vicki González and Hanley, n. sp.

— Dorsal pattern consisting of irregularly arranged vittae with three more or less fused vittae in basal 1/2 becoming an irregular, large macula in basal 1/2 (Fig. 8).......................................................................... 2. C. nodiceps Marshall

9(3). Elytron mostly dark with lateral margin pale...................................... 10 — Elytron with distinct central color pattern......................................... 12

10(9). Pale lateral margin of elytron wide, reddish yellow; pronotum entirely yellowish red (Fig. 106)....................................... 20. C. della González and Hanley, n. sp.

— Pale lateral margin of elytron narrow, yellow; pronotum yellow with basomedian black macula................................................................... 11

11(10). Lateral margin on elytron sharply defined (Fig. 40); Peru ................................................................... 7. C. hannah González and Hanley, n. sp.

— Lateral margin on elytron obscure defined (Fig. 32); Guyana ................................................................... 6. C. kellie González and Hanley, n. sp.

12(9). Elytron with basal 1/2 dark brown, apical 1/2 yellow (Fig. 49)........... 9. C. reedi Crotch

— Elytron with elongate yellow macula next to scutellar shield, macula narrowly extended posteriorly parallel to suture ending in triangular macula at base of apical declivity (Fig. 103).................................. 19. C. gayle González and Hanley, n. sp.

13(2). Pronotum entirely or mostly yellow.............................................. 14 — Pronotum mostly dark brown or black............................................ 15

14(13). Pronotum entirely yellow (Fig. 99); Brazil ......................... 18. C. batesi Crotch

— Pronotum mostly yellow with small, apically sinuate basal macula (Fig. 44).................................................... 8. C. whitney González and Hanley, n. sp. 15(13). Length 3.4 mm; Colombia (Fig. 113)........................... 22. C. aethiops Crotch — Length less than 3.4 mm; Brazil ................................................. 16

16(15). Male pronotum with narrow, yellow anterior border (Fig. 82)................................................................ 15. C. shelia González and Hanley, n. sp.

— Male pronotum entirely black or dark brown....................................... 17

17(16). Penis guide of male genitalia abruptly narrowed in apical 1/2 (Fig. 75)................. 18

— Penis guide of male genitalia parallel-sided for most of length, or gradually narrowed in apical 1/2 (Fig. 70)............................................................... 20

18(17). Penis guide of male genitalia much shorter than paramere, apex very acute (Fig. 75, 76)........................................................... 13. C. flaviceps Crotch

— Penis guide of male genitalia about at long as paramere............................. 19

19(18). Penis guide with apex rounded (Fig. 79), weakly curved downward in lateral view (Fig. 80)..................................................... 14. C. weisei Brethes

— Penis guide of male genitalia abruptly narrowed (Fig. 64), sinuate in lateral view (Fig. 64)............................................................ 11. C. clarki Crotch

20(17). Penis guide of male genitalia about as long as paramere, oval, slightly widened in apical 1/2, then narrowed to weakly emarginate apex (Fig. 70)....................................................................... 12. C. celia González and Hanley, n. sp.

— Penis guide of male genitalia long slender......................................... 21

21(20). Male genitalia with phallobase long, penis guide slightly longer than paramere, slender, evenly narrowed from base to abruptly rounded apex (Fig. 88)................................................................. 16. C. yolandi González and Hanley, n. sp.

— Male genitalia elongate, penis guide about as long as paramere, oval, sides parallel in basal 1/2, curved to rounded apex in apical 1/2 (Fig. 95)........................... 17. C. pudibunda Mulsant