Key to the males of Euplocania species from Brazil

1. Hypandrium of five sclerites (Fig. 36)........................................... Euplocania quinquedivisa n. sp.

-. Hypandrium of three sclerites............................................................................ 2

2. Hypandrium with side sclerites fused to the central piece (Fig. 25 in New, 1980)......................... E. cerata New

-. Hypandrium with side sclerites not fused to the central piece................................................... 3

3. Central sclerite of hypandrium with median posterior projections and without lateral posterior projections; pterostigma not angulate (Figs 40 and 43)................................................................ E. uariniensis n. sp.

-. Central sclerite of hypandrium without median posterior projections and with lateral posterior projections; pterostigma angulate, extended towards Rs............................................................................... 4

4. Mesal endophallic sclerite without median posterior processes, or with a tiny projection, almost imperceptible............ 5

-. Mesal endophallic sclerite with median posterior processes well developed........................................ 8

5. Central sclerite of hypandrium almost square, with postero-lateral processes short, with acuminate internal processes...... 6

-. Central sclerite of hypandrium U-shaped, with postero-lateral processes elongated, without acuminate internal processes... 7

6. Postero-lateral processes of the central sclerite of hypandrium almost parallel, with straight acuminate internal processes directed outwards, without an acuminate projection on each side; mesal endophallic sclerite without median posterior processes (Figs 5 and 6 in Vinasco-Mondragón et al., 2018)......... E. ariasi Vinasco-Mondragón, González & García Aldrete

-. Postero-lateral processes of the central sclerite of hypandrium curved inwards, with straight acuminate internal processes directed inwards, with an acuminate projection on each side, anterior to each postero-lateral process; mesal endophallic sclerite, with a tiny posterior projection in the middle (Figs 20 and 21)................................ E. hutchingsi n. sp.

7. Pterostigma fully pigmented; postero-lateral processes of the central sclerite of hypandrium slightly curved inwards; mesal endophallic sclerite with a median concavity anteriorly, a small concavity on each side, and two stout posterior processes, slightly curved inwards (Figs 48, 51 and 52).................................................... E. xavieri n. sp.

-. Pterostigma with a hyaline window, almost rectangular at lower angle; postero-lateral processes of the central sclerite of hypandrium parallel; mesal endophallic sclerite straight anteriorly, with two slender posterior processes, parallel (Figs 55, 5 9 and 60 in Vinasco-Mondragón et al., 2018)....................... E. tocantina Mondragón, González & García Aldrete

8. Postero-lateral processes of the central sclerite of hypandrium short, without median concavity between them............ 9

-. Postero-lateral processes of the central sclerite of hypandrium elongated, leaving between them a deep V- shaped concavity..................................................................................................... 12

9. Mesal endophallic sclerite with postero-lateral projections longer than the median process; postero-lateral processes of the central sclerite of hypandrium distally forked, with an acuminate projection on each side, anterior to each postero-lateral process (Figs 16 and 17 in New, 1980)................................................................. E. picta New

-. Mesal endophallic sclerite with median process longer than the postero-lateral projections; postero-lateral processes of the central sclerite of hypandrium distally not forked, without an acuminate projection on each side, anterior to each postero-lateral process............................................................................................ 10

10. Phallosome with three pairs of endophallic sclerites; postero-lateral processes of the central sclerite of hypandrium sinuous (Figs 13 and 14)........................................................................ E. cearaensis n. sp.

-. Phallosome with two pairs of endophallic sclerites; postero-lateral processes of the central sclerite of hypandrium not sinuous................................................................................................... 11

11. Postero-lateral processes of the central sclerite of hypandrium broad, with inner border straight, rounded outwards, leaving between them a broad, straight concavity; mesal endophallic sclerite with median process widening distally (Figs 53 and 54 in Vinasco-Mondragón et al., 2018).......................... E. rafaeli Vinasco-Mondragón, González & García Aldrete

-. Postero-lateral processes of the central sclerite of hypandrium slender, almost triangular, leaving between them a small irregular projection; mesal endophallic sclerite with median process narrowing distally (Figs 41 and 42 in Vinasco-Mondragón et al., 2018)............................................ E. manausensis Vinasco-Mondragón, González & García Aldrete 12. Forewing with a marginal pigmented band from R 4+5 to A 2, pterostigma with a small hyaline window at lower angle; mesal endophallic sclerite with postero-lateral projections longer than the median process (Figs 3 and 7)....... E. bujariensis n. sp.

-. Forewing with a marginal pigmented band from pterostigma to A 2, pterostigma completely pigmented, mesal endophallic sclerite with median process longer than the postero-lateral projections.......................................... 13

13. Postero-lateral processes of the central sclerite of hypandrium bearing a field of spines; phallosome with anterior pair of endophallic sclerites fused, resulting in a second mesal endophallic sclerite, anteriorly (Figs 27 and 28).................................................................................................. E. pseudopictaoides n. sp.

-. Postero-lateral processes of the central sclerite of hypandrium without a field of spines; phallosome with anterior pair of endophallic sclerites not fused........................................................................... 14

14. Mesal endophallic sclerite with two pairs of postero-lateral processes; postero-lateral processes of the central sclerite of hypandrium as long as its antero-posterior length (Figs 23 and 24 in Vinasco-Mondragón et al., 2018)............................................................................ E. equorum Vinasco-Mondragón, González & García Aldrete

-. Mesal endophallic sclerite with two pairs of postero-lateral processes; postero-lateral processes of the central sclerite of hypandrium twice as long as its antero-posterior length (Figs 23 and 24 in New & Thornton, 1988)....................................................................................................... E. badonneli New & Thornton