Key to species of Klyngon

1. Mesoscutum with narrow and distinct notauli in posterior 2/3 (Figs 2, 39)...................... K. aulacis sp. nov. (female)

- Mesoscutum with notauli absent (e.g. Figs 1, 37, 38) .................................................................................................. 2

2. Posterior ocelli situated at or very close to occipital margin (e.g. Figs 22, 23, 25)...................................................... 3

- Posterior ocelli situated away from occipital margin, at a distance of at least half shortest measure (length or width) of ocellus (e.g. Figs 24, 27, 29)..................................................................................................................................... 8

3. Frontal suture absent (Figs 9, 10) ....................................................................... K. costalimai sp. nov. (female, male)

- Frontal suture as a narrow groove, present at least medially (e.g. Figs 3, 5) ............................................................... 4

4. Frons smooth and shiny, with only weak traces of reticulation (Fig. 3); antennal flagellum white (Fig. 87)................ ...................................................................................................................................... K. albicornis sp. nov. (female)

- Frons with strong reticulation (e.g. Figs 5, 7); flagellum dark brown to black ............................................................ 5

5. Entire dorsellum visible in dorsal view (Fig. 38) ........................................................ K. copaiferae sp. nov. (female)

- Dorsellum at least partially hidden under the backwards prolonged scutellum and not visible in dorsal view (e.g. Figs 37, 45, 46) ............................................................................................................................................................. 6

6. With a narrow slit between scutellum and axilla (Figs 35, 45, 46) .............................................................................. 7

- Without a slit between scutellum and axilla (Fig. 37) ........................................ K. brasilense sp. nov. (female, male)

7. Malar space wide, HE/MS = 5.9 in female and 5.2 in male (Figs 15, 16); female flagellum with 1 large and 2 small and discoid anelli (Figs 80, 98); male flagellum 0.9X as long as scape (Fig. 99) .......................................................... .......................................................................................................................... K. guimaraesi sp. nov. (female, male)

- Malar space narrow, HE/MS = 37.0 in female and 13.3 in male (Figs 17, 18); female flagellum with 2 small and dis- coid anelli (Figs 82, 100); male flagellum 1.3X as long as scape (Fig. 101)....... K. serjaniae sp. nov. (female, male)

8. Antennal scrobes wide and deep, to accommodate scape (Fig. 14); flagellum with 4 segments (1 funicular and 3 cla- val) (Figs 79, 97)............................................................................................................... K. petalon sp. nov. (female)

- Antennal scrobes as narrow grooves (missing close to toruli in 1 species) (e.g. Figs 11, 12); flagellum with 5 seg- ments (Figs 94, 96) ....................................................................................................................................................... 9

9. Frontal suture present (Fig. 12).......................................................................................... K. hortense sp. nov. (male)

- Frontal suture absent (Figs 11, 13) ............................................................................................................................. 10

10. With a narrow slit between scutellum and axilla (Fig. 41); scutellum prolonged backwards, obscuring propodeum in dorsal view (Fig. 41) ...................................................................................................... K. gibberum sp. nov. (female)

- Without a slit between scutellum and axilla (Figs 43, 47); propodeum visible in dorsal view (Figs 43, 47) ............ 11

11. Midlobe of mesoscutum with 2 pairs of setae (Fig. 43) ............................................... K. pegosoma sp. nov. (female)

- Midlobe of mesoscutum with about 10 scattered setae (Figs 47, 48)......................................................................... 12

12. Forewing hyaline or with median part weakly infuscate (Fig. 57); female with all 5 flagellar segments distinctly separated (Figs 85, 103) ........................................................................................................ K. bouceki Hansson (female)

- Forewing with a complete dark brown band medially (Fig. 58); female flagellum with a 2-segmented clava (Figs 84, 101) ....................................................................................................................... K. jimenezi Hansson (female, male)