This key includes all species of the E. sexdens group and was made based on the combination of body characteristics, should be noted that living specimens may have a slightly different color as noted above.

1 Body predominantly orange to red with large black areas on pronotum, coria and ventral surface of abdomen (see Mendonça et al., 2023: Fig. 27 E–F)......................................................................... E. miniata

- Body predominantly green to brown with dark marks usually present only on humeral angles, connexivum and bands on ventral surface of abdomen (Fig. 56 A–F)........................................................................ 2

2 Ventral surface of the body with alternated yellow to greenish-yellow and green bands (Figs. 56 B, 59 B, 65 D, 70 B, F; see Mendonça et al., 2023: Fig. 9 B, in poorly preserved specimens, greenish-yellow bands turn yellow and green bands turn brown).............................................................................................. 3

- Ventral surface of the body brown or yellow to orange, usually with dark bands, sometimes without bands (Fig. 55 D, F).... ................................................................................................... 9

3 Humeral angles slightly curved and robust (Figs. 56 A, 59 A, 67 E).............................................. 4

- Humeral angles curved and narrow (Figs. 65 C, 70 A, E; see Mendonça et al., 2023: Fig. 9 A)........................ 6

4 All legs reddish brown; antennae reddish-brown (Figs. 56 B, 67 F).............................................. 5

- Hindlegs yellow to dark yellow, remaining legs reddish-brown; antennae black (Fig. 59 A–B)....... E. flavofemorata sp. n.

5 Second antennal segment shorter than third (Fig. 67 E–F)....................................... E. rufofusca sp. n.

- Second antennal segment longer than third (Fig. 56 A–B)................................... E. chloroicterica sp. n.

6 Scutellum with rounded apex (Fig. 65 C; see Mendonça et al., 2023: Fig. 9 A)..................................... 7

- Scutellum with acute apex (Fig. 70 A, E)................................................................... 8

7 Pronotum with anterolateral margin concave (Fig. 65 C); arms of anterior bifurcation the metasternal process narrow, deep (Fig. 35 G)............................................................................ E. nigroantennata sp. n.

- Pronotum with anterolateral margin slightly concave; arms of anterior bifurcation the metasternal process with swollen, shallow (see Mendonça et al., 2023: Fig. 9 A–B).......................................................... E. imbecilla

8 Arms of anterior bifurcation of the metasternal process shallow (Fig. 49 F)........................ E. tuberculata sp. n.

- Arms of anterior bifurcation of the metasternal process deep (Fig. 51 G)......................... E. viridifasciata sp. n.

9 Humeral angles long, straight, somewhat frontward directed, posterior margin crenulate; posterior pronotal angles with a triangular, tooth-like projection (Fig. 52 A, D–E; see Mendonça et al., 2023: Fig. 25 A)............................. 10

- Humeral angles long or short, sinuous or almost straight, distally curved backward, posterior margin smooth; posterior pronotal angles without projections (Figs. 55 C, 58 A).............................................................. 11

10 Posterior pronotal tooth-like projections reduced; apex of humeral angles dark brown (see Mendonça et al., 2023: Fig. 25 A)........................................................................................ E. cylindricornis

- Posterior pronotal tooth-like projections strongly developed; apex of humeral angles yellow (Fig. 52 A, D–E)............................................................................................... E. magnifica comb. n.

11 Connexival segments without dark spots (Figs. 55 C, 58 A)................................................... 12

- Connexival segments with a pair of dark spots (Figs. 62 E, 64 A, 66 E).......................................... 27

- Connexival segments almost entirely black (Fig. 54 E).......................................... E. amaurata sp. n.

12 Evaporatorium dark, contrasting with surrounding surface (Figs. 55 D, 58 B; see Mendonça et al., 2023: Figs. 26 B, D, 27 D, 29 B).............................................................................................. 13

- Evaporatorium concolorous with surrounding surface (Figs. 54 B, 62 B, 69 F).................................... 18

13 Humeral angles barely developed, at least 1.7 times wider than long (Figs. 55 C, 58 A; see Mendonça et al., 2023: Fig. 26 A–B).............................................................................................. 14

- Humeral angles developed, from 1.5 times wider than long to clearly longer than wide (see Mendonça et al., 2023: Figs. 26 C, 27 C, 29 A)......................................................................................... 16

14 Pronotal disc coarse; ventral intersegmental bands of abdomen narrow, solid dark brown (see Mendonça et al., 2023: Fig. 26 A–B)...................................................................................... E. gentilitia

- Pronotal disc smooth; ventral intersegmental bands of abdomen narrow or wide, diffused brown (Figs. 55 C–D, 58 A–B).... .................................................................................................. 15

15 Legs dark-brown; ventral intersegmental bands of abdomen very wide and dark brown (Fig. 55 D)..... E. brevicornis sp. n.

- Legs yellow to dark-yellow; ventral intersegmental bands of abdomen narrow and brown (Fig. 58 B)..... E. flavilinea sp. n.

16 Humeral angles wider than long (1.3 times wider than long), apex brown (see Mendonça et al., 2023: Fig. 29 A).................................................................................................. E. phoenicopus

- Humeral angles longer than wide, apex black or yellow (see Mendonça et al., 2023: Figs. 26 C, 27 C)................. 17

17 Antennae yellow; humeral angles pale yellow; corial veins yellow; ventral intersegmental bands of abdomen diffused brown (see Mendonça et al., 2023: Fig. 27 C–D)............................................................ E. lewisi

- Antennae reddish brown; humeral angles black; corial veins green, paler than the surrounding surface; ventral intersegmental bands of abdomen solid black (see Mendonça et al., 2023: Fig. 26 C–D)............................... E. helicoceras

18 Humeral angles brown (Fig. 54 A; see Mendonça et al., 2023: Figs. 25 E, 27 A)................................... 19

- Humeral angles black (Figs. 62 A, 69 E).................................................................. 21

19 Ventral surface of the body with narrow black bands on thorax and abdomen (see Mendonça et al., 2023: Figs. 25 F, 27 B).. .................................................................................................. 20

- Ventral surface of thorax and abdomen with wide brown bands (Fig. 54 B)............................ E. accola sp. n.

20 Humeral angles long (1.3 times wider than long); ventral abdomen without black spot close to each spiracle (see Mendonça et al., 2023: Fig. 25 E–F).......................................................................... E. fallenii

- Humeral angles short (1.6 times wider than long); ventral abdomen with black spot close to spiracles on each segment (see Mendonça et al., 2023: Fig. 27 A–B)............................................................. E. leucocera

21 Arms of anterior bifurcation of metasternal process barely expanded laterally at apex (Figs. 25 G, 48 G)............... 22

- Arms of anterior bifurcation of metasternal process expanded laterally at apex (Figs. 10 G, 40 G)..................... 24

22 Humeral angles short and slightly curved backward (Fig. 62 A; see Mendonça et al., 2023: Fig. 28 A)................. 23

- Humeral angles long and curved backward (Fig. 69 E)..................................... E. truncatiacantha sp. n.

23 Femora darker than the rest of the leg (see Mendonça et al., 2023: Fig. 28 A–B).......................... E. nigriclava

- Femora concolorous with the rest of the leg (Fig. 62 B)....................................... E. immaculata sp. n.

24 Propleural band black and long, almost reaching base of humeral angles (Figs. 67 B, 70 D).......................... 25

- Propleural band brown and short, slightly passing propleural sulcus (Figs. 57 B, 69 B)............................. 26

25 Ventrally prothorax with anterolateral margin gently grooved, humeral angles black spot broad, propleura shallowly punctured, area between pro and mesopleura brown (Fig. 67 B)............................................. E. redunca sp. n.

- Ventrally prothorax with anterolateral margin strongly grooved, humeral angles black spot narrow, propleura deeply punctured, area between pro and mesopleura black (Fig. 70 D)........................................ E. ventrocarinata sp. n.

26 Dorsal surface grass green (Fig. 57 A); ventrally prothorax with humeral angles black spot narrow (Fig. 57 B); arms of anterior bifurcation of metasternal process laterally expanded at apex (Fig. 10 G); legs yellow (Fig. 57 B)....... E. decolorata sp. n.

- Dorsal surface olive green (Fig. 69 A); ventrally prothorax with humeral angles black spot broad (Fig. 69 B); arms of anterior bifurcation of metasternal process laterally well expanded at apex (Fig. 46 G); legs reddish (Fig. 69 B).................................................................................................... E. sphaerocornis sp. n.

27 Connexival dark spots not extended ventrally (Figs. 63 B, 64 B, 66 D; see Mendonça et al., 2023: Figs. 19 B, 26 F, 28 D)... .................................................................................................. 28

- Connexival dark spots extended ventrally (Figs. 57 F, 60 B, 65 B).............................................. 37

28 Humeral angles as long as wide or wider than long (Figs. 63 A, 64 A, 66 C)...................................... 29

- Humeral angles longer than wide (see Mendonça et al., 2023: Fig. 26 E).................................... E. helix

29 Humeral angles wider than long (Figs. 64 A, 66 C; see Mendonça et al., 2023: Figs. 19 A, 28 C)..................... 30

- Humeral angles as long as wide (Figs. 63 A, 64 C).......................................................... 33

30 Humeral angles laterally directed, apex clearly globose, robust (see Mendonça et al., 2023: Fig. 28 C)....... E. nigricornis

- Humeral angles posteriorly directed, small, apex slightly globose (Figs. 64 A, 66 C; see Mendonça et al., 2023: Fig. 19 A)... .................................................................................................. 31

31 Black spots of connexivum small and narrow (Fig. 66 C; see Mendonça et al., 2023: Fig. 19 A)...................... 32

- Black spots of connexivum large and wide (Fig. 64 A)....................................... E. maranhensis sp. n.

32 Apex of scutellum reaching the apex of coria (Fig. 66 C); ventrally abdomen with narrow bands on intersegmental areas and pseudosutures (Fig. 66 D).................................................................. E. proxima sp. n.

- Apex of scutellum not reaching the apex of coria (see Mendonça et al., 2023: Fig. 19 A); ventrally abdomen with wide bands on intersegmental areas and pseudosutures (see Mendonça e t al., 2023: Fig. 19 B)......................... E. schirmeri

33 Body dorsally olivaceous to dark-brown, ventrally orange; solid black thoracic ventral bands (Fig. 63 A–B).................................................................................................... E. infuscata sp. n.

- Body dorsally green, ventrally greenish-yellow; diffused brown thoracic bands (Figs. 55 A–B, 59 C–D, 61 C–D, 64 C–D)... .................................................................................................. 34

34 Body ventrally with bands wide and somewhat vivid (Fig. 64 D)............................... E. maurocornis sp. n.

- Body ventrally with bands narrow and faded (Figs. 55 B, 59 D, 61 D)........................................... 35

35 Arms of anterior bifurcation of metasternal process shallow, receiving only the fourth rostral segment (Fig. 17 G)............................................................................................ E. fuliginocornis sp. n.

- Arms of anterior bifurcation of metasternal process deep, receiving the fourth and part of the third rostral segments (Figs. 4 G, 23 B).............................................................................................. 36

36 Arms of anterior bifurcation of metasternal process barely expanded at apex (Fig. 4 G)................ E. atricornis sp. n.

- Arms of anterior bifurcation of metasternal process well expanded at apex (Fig. 23 B)............. E. illuminocornis sp. n.

37 Evaporatorium black (Fig. 57 F)............................................................. E. fabricii sp. n.

- Evaporatorium concolorous with the surrounding surface (Figs. 56 D, 68 D; see Mendonça et al., 2023: Fig. 29 B)....... 38

38 Anterolateral margins of pronotum and anterior margin of cicatrices with row of black punctures covered by solid black line; apex of scutellum exceeding end of coria (see Mendonça et al., 2023: Fig. 29 C)............................ E. sexdens

- Anterolateral margins of pronotum and anterior margin of cicatrices with row of concolorous to blackish punctures never covered by solid black line; apex of scutellum not reaching or level with end of coria (Figs. 56 C, 57 C, 58 C, 68 C; see Mendonça et al., 2023: Fig. 24 A, E)..................................................................... 39

39 Humeral angles dorsally concolorous or lighter than pronotum (Figs. 56 C, 60 C, 64 E, 68 C; see Mendonça et al., 2023: Figs. 24 A, E, 29 E)....................................................................................... 40

- Humeral angles dorsally dark-brown to black, contrasting with pronotum (Figs. 57 C, 58 E; see Mendonça et al., 2023: Figs. 22 A, 24 C)......................................................................................... 46

40 Humeral angles straight, laterally directed (Fig. 68 C; see Mendonça et al., 2023: Fig. 24 E)......................... 41

- Humeral angles curved backward (Figs. 56 C, 60 C, 64 E; see Mendonça et al., 2023: Figs. 24 A, 29 E)................ 42

41 Apex of humeral angles not curved; spots of connexival segments small (Fig. 68 C)................... E. simulata sp. n.

- Apex of humeral angles slightly curved; spots of connexival segments large (see Mendonça et al., 2023: Fig. 24 E)................................................................................................... E. congrua

42 Humeral angles acuminated, small, not globose (Fig. 56 C; see Mendonça et al., 2023: Fig. 29 E–F).................. 43

- Humeral angles rounded, somewhat developed, slightly globose (Figs. 60 C, 64 E; see Mendonça et al., 2023: Fig. 24 A).... .................................................................................................. 44

43 Ventral body surface, antennae and legs reddish yellow (see Mendonça et al., 2023: Fig. 29 F); arms of anterior bifurcation the metasternal process shallow (see Mendonça et al., 2023: Fig. 23 G)........................................ E. urus

- Ventral body surface, antennae and legs yellowish (Fig. 56 D); arms of anterior bifurcation the metasternal process deep (Fig. 8 B).................................................................................. E. cornicula sp. n.

44 Dark spots of connexival segments large, occupying most of the segment (Fig. 64 E; see Mendonça et al., 2023: Fig. 24 A); body ventral surface orange or dark yellow to brown (Fig. 64 F; see Mendonça et al., 2023: Fig. 24 B)................ 45

- Dark spots of connexival segments small, occupying only the lateral corners (Fig. 60 C); body ventral surface yellow (Fig. 60 D)............................................................................... E. guatemalensis sp. n.

45 Humeral angles long (see Mendonça et al., 2023: Fig. 24 A); arms of anterior bifurcation the metasternal process divergent and shallow (see Mendonça et al., 2023: Fig. 1 G).......................................................... E. alces

- Humeral angles short (Fig. 64 E); arms of anterior bifurcation the metasternal process slightly divergent and very shallow (Fig. 33 F)................................................................................... E. mimica sp. n.

46 Ventral surface of abdomen with bands of intersegmental areas solid black, not interrupted medially, except in segments II–III (see Mendonça et al., 2023: Fig. 22 B)........................................................... E. subandina

- Ventral surface of abdomen with bands of intersegmental areas darkened or absent on raised median area (Figs. 57 D, 58 F).. .................................................................................................. 47

47 Humeral angles as long as wide, sinuous, anterolaterally directed with distal part curved backward (Fig. 58 E; see Mendonça et al., 2023: Fig. 24 C).................................................................................. 48

- Humeral angles wider than long, laterally or posterolaterally directed with distal part straight or curved backward (Figs. 57 C, 60 E, 61 A, 65 A, 66 E, 67 C, 68 E; see Mendonça et al., 2023: Fig. 25 C)....................................... 49

48 Antennae dark brown; humeral angles with yellow to orange band adjacent to black distal part (see Mendonça et al., 2023: Fig. 24 C).......................................................................................... E. bella

- Antennae pale yellow to orange; humeral angles concolorous with pronotum except the black distal part (Fig. 58 E)......................................................................................... E. flavoantennata sp. n.

49 Humeral angles laterally directed (Figs. 57 C, 60 E, 61 A, 65 A, 67 C).......................................... 50

- Humeral angles posterolaterally directed (Figs. 61 E, 63 C, E, 66 E, 68 E; see Mendonça et al., 2023: Fig. 25 C)......... 54

50 Humeral angles short; ventral black spot of humeral angles restricted to the apical margin (Fig. 65 A–B)................................................................................................... E. nigroacantha sp. n.

- Humeral angles long; ventral brown spot of humeral angles covering most of the angles (Figs. 57 C–D, 60 E–F, 61 A–B, 67 C–D).............................................................................................. 51

51 Humeral angles with dorsal black spot (Figs. 57 C, 67 C)..................................................... 52

- Humeral angles with dorsal dark brown spot (Figs. 60 E, 61 A)................................................ 53

52 Apex of humeral angles curved; femora darker than tibiae and tarsi (Fig. 57 C–D); distribution: southeastern Brazil (Fig. 72)........................................................................................ E. echyra sp. n.

- Apex of humeral angles slightly curved; tibiae and tarsi darker than femora (Fig. 67 C–D); distribution: Panama (Fig. 72)........................................................................................... E. reuteri sp. n.

53 Apex of humeral angles straight and swollen (Fig. 61 A); arms of anterior bifurcation the metasternal process well expanded at apex (Fig. 22 F); body ventrally with uniformly wide black bands on intersegmental areas (Fig. 61 B).................................................................................................... E. humerorotunda sp. n.

- Apex of humeral angles slightly curved and slightly swollen (Fig. 60 E); arms of anterior bifurcation the metasternal process expanded at apex (Fig. 21 F); body ventrally with black bands on intersegmental areas tapering to both ends (Fig. 60 F)...................................................................................... E. humeroglobosa sp. n.

54 Pseudosutures of the abdomen with solid dark brown to black band (Figs. 66 F, 68 F).............................. 55

- Pseudosutures of the abdomen concolorous with the surrounding surface or light-brown, band smudged (Figs. 61 F, 63 D, F; see Mendonça et al., 2023: Fig. 25 D).................................................................... 56

55 Humeral angles long and slightly curved backward (Fig. 68 E); ventral abdomen yellow with black spot close to spiracle on each segment (Fig. 68 F); distribution: Suriname (Fig. 72).................................... E. surinamensis sp. n.

- Humeral angles short and curved backward (Fig. 66 E); ventral abdomen reddish brown without black spots close to spiracles (Fig. 66 F); distribution: Costa Rica (Fig. 74)........................................ E. pseudonigroangulata sp. n.

56 Ventral intersegmental bands of abdomen not reaching the lateral spots in segments II–VI (Figs. 59 F, 61 F, 62 D, 63 F, 65 F, 68 B; see Mendonça et al., 2023: Fig. 25 D).................................................................. 57

- Ventral intersegmental bands of abdomen reaching the lateral spots in segments II–VI (Figs. 62 F, 63 D)............... 63

57 Ventral surface of abdomen yellow (Fig. 62 D; see Mendonça et al., 2023: Fig. 25 D).............................. 58

- Ventral surface of abdomen reddish yellow to reddish brown (Figs. 59 F, 61 F, 63 F, 65 F, 68 B)...................... 59

58 Humeral angles long with dorsal spot covering 3/4 of the humeral angles; ventral abdominal spine in segment III distally rounded (Fig. 62 C–D)....................................................................... E. inca sp. n.

- Humeral angles short with dorsal spot covering 2/3 of the humeral angles; ventral abdominal spine in segment III distally acuminated (see Mendonça et al., 2023: Fig. 25 C–D).................................................. E. electa

59 Dorsal surface green; humeral angles with dorsal black spot restricted to the angles; connexival spots yellow (Figs. 61 E, 63 E)................................................................................................ 60

- Dorsal surface reddish brown; humeral angles with dorsal black spot extended to the disc of pronotum; connexival spots orange (Figs. 59 E, 65 E, 68 A)............................................................................... 61

60 Arms of anterior bifurcation of metasternal process well expanded at apex (Fig. 24 B); ventral intersegmental bands of abdomen black (Fig. 61 F).......................................................................... E. imitans sp. n.

- Arms of anterior bifurcation of metasternal process expanded at apex (Fig. 30 G); ventral intersegmental bands of abdomen brown (Fig. 63 F)....................................................................... E. maculosa sp. n.

61 Ventral black spot of humeral angles covering most of the angles (Fig. 59 F).................... E. fulvomaculata sp. n.

- Ventral black spot of humeral angles restricted to the margin of the angles (Figs. 65 F, 68 B)......................... 62

62 Metasternal process with arms of anterior bifurcation receiving the fourth and part of the third rostral segment; arms of anterior bifurcation the metasternal process barely expanded laterally at apex (Fig. 43 F); ventral abdominal spine in segment III acuminated (Fig. 68 B)..................................................................... E. rutilata sp. n.

- Metasternal process with arms of anterior bifurcation not completely receiving the fourth rostral segment; arms of anterior bifurcation the metasternal process expanded laterally at apex (Fig. 36 G); ventral abdominal spine in segment III rounded (Fig. 65 F)............................................................................... E. nigrocrocata sp. n.

63 Lateral portion of each abdominal segment with the middle yellow spot smaller than the anterior and posterior black spots combined; (Fig. 63 C–D)................................................................... E. limeirai sp. n.

- Lateral portion of each abdominal segment with the middle yellow spot larger than the anterior and posterior black spots combined (Figs. 54 C–D, 55 E–F, 56 E–F, 58 C–D, 60 A–B, 62 E–F; see Mendonça et al., 2023: Figs. 10 F–G, 28 E–F)... 64

64 Dorsal black spot of humeral angles clearly expanded over the disc of pronotum; propleura with dark band reaching the base of humeral angles (Figs. 54 C–D, 58 C–D).................................................................. 65

- Dorsal black spot of humeral angles restricted to the angles; propleura with dark band not reaching the base of humeral angles (Figs. 55 E–F, 56 E–F, 60 A–B, 62 E–F, 66 A–B, 69 C–D; see Mendonça et al., 2023: Figs. 10 F–G, 28 E–F)........... 66

65 Humeral angles long, mostly black ventrally; propleura with black band (Fig. 54 C–D).............. E. amapaensis sp. n.

- Humeral angles short, mostly brown ventrally; propleura with brown band (Fig. 58 C–D)............. E. flaviventris sp. n.

66 Ventral surface orange; connexivum with orange spots (see Mendonça et al., 2023: Fig. 10 F–G)................ E. lavata

- Ventral surface yellow to dark yellow; connexivum with yellow spots (Figs. 55 E–F, 56 E–F, 60 A–B, 66 A–B; see Mendonça et al., 2023: Fig. 28 E–F).............................................................................. 67

67 Propleura coarse, deeply punctured (Fig. 56 F; see Mendonça et al., 2023: Fig. 28 F)............................... 68

- Propleura smooth, shallowly punctured (Figs. 55 F, 60 B, 62 F, 66 B, 69 D)...................................... 69

68 Humeral angles incrassate, ventral black spot restricted to the apical margin (Fig. 56 E–F)........... E. crassicornis sp. n.

- Humeral angles slender, ventral black spot covering the apex (see Mendonça et al., 2023: Fig. 28 E–F)..... E. nigroangulata

69 Humeral angles with ventral black spot restricted to the apical margin; black spots of connexivum small (Figs. 62 E–F, 66 A–B).............................................................................................. 70

- Humeral angles with ventral black spot covering half or more of the angles; black spots of connexivum large (Figs. 55 E–F, 60 A–B, 69 C–D)....................................................................................... 71

70 Pronotum with shallow punctures; humeral angles long; ventral intersegmental bands of abdomen black (Fig. 62 E–F)........................................................................................... E. indiscreta sp. n.

- Pronotum with deep punctures; humeral angles short; ventral intersegmental bands of abdomen brown (Fig. 66 A–B)............................................................................................ E. omopalla sp. n.

71 Dorsal black spot of humeral angles reaching the baseline of the angles, ventral black spot covering more than half of the angles (Fig. 60 A–B).......................................................................... E. glomerosa sp. n.

- Dorsal black spot of humeral angles not reaching the baseline of the angles, ventral black spot covering less than half of the angles (Figs. 55 E–F, 69 C–D).......................................................................... 72

72 Humeral angles swollen (Fig. 69 C–D); arms of anterior bifurcation of metasternal process expanded at apex (Fig. 47 F)........................................................................................ E. tenuivittata sp. n.

- Humeral angles barely swollen (Fig. 55 E–F); arms of anterior bifurcation of metasternal process barely expanded at apex (Fig. 6 G).............................................................................. E. brevihumeralis sp. n.