Modified key from Waichert et al. (2018) to the species of Ageniella (Priophanes) from Brazil (females)

1. Forewing darkened, with whitish apex; head and body black; antennae black (Fig. 3) ..................... ................................................................................................................................. A. ruschi sp. nov.

– Forewing hyaline or subhyaline, with or without darkened bands ................................................... 2

2. Forewing hyaline maculated, with two darkened bands ................................................................... 3

– Forewing hyaline, without darkened bands ...................................................................................... 8

3. Integument with golden scale-like setae; face with depressions laterally to the antennal insertion ... ........................................................................................................................................................... 4

– Integument without golden scale-like setae; face without depressions laterally to the antennal insertions ........................................................................................................................................... 5

4. Clypeus large, its surface convex with a median angulate tooth on the anterior margin; metasoma black, covered with golden setae ......................................................... A. sericosoma (Banks, 1946)

– Clypeus large, its surface convex, with median anterior margin slighted projected, but without angulate tooth; metasoma orange-rufous, without golden setae ............. A. rufigaster (Banks, 1946)

5. Integument rufous; forewing subhyaline, with two faint bands; clypeus trapezoidal with an apical median tooth ......................................................................................... A. pictipennis (Banks, 1946)

– Integument various; forewing various; clypeus various ................................................................... 6

6. Antennomeres 1–7 orange-rufous (antennomere 7 of castaneous color as well); fore tibia, fore femur distally, mid and hind tarsi orange-rufous ................................................... A. rufitarsis (Fox, 1897)

– Antennomeres uniform in color; legs various .................................................................................. 7

7. Head, legs and metasoma black with bluish reflections, mesosoma rufous; clypeus trapezoidal with anterior margin slightly trilobed; forewing with three wide darkened bands and two white bands ............................................................................................................. A. comes (Banks, 1946)

– Head, mesosoma and metasoma black with bluish reflections; clypeus trapezoidal with anterior margin slightly prolonged medially; forewing with two darkened bands ........................................... ............................................................................................................... A. pallicornis (Banks, 1946)

8. Forewing darkened; metasoma with basal terga 1–4 rufous, apical terga black ................................ ....................................................................................................................... A. basirufa (Fox, 1897)

– Forewing hyaline or subhyaline; metasoma uniform in color (basal terga black in A. otiosa) ........ 9

9. Metasoma black; dorsal integument covered without cuprum setae; forewing hyaline ................. 10

– Metasoma rufous, apical terga black; dorsal integument covered with cuprum setae; forewing subhyaline, tip broadly castaneous ............................................................... A. otiosa (Banks, 1946)

10. Integument black without bluish-purple reflections; forewing darkened; clypeus trapezoidal, large, anterior margin slightly sinuous medially ................................................. A. nigerrima (Fox, 1897)

– Integument black with faint bluish-purple reflections; forewing subhyaline; clypeus various .......11

11. Forewing with a faint darkened band partially covering cells R, 1M and 1Cu–2Cu, and cells 2R1, 1Rs–2Rs and 2M, and vein M with small-faint spot; legs black; clypeus with anterior margin rounded ..................................................................................................... A. dolorosa (Banks, 1946)

– Forewing without faint darkened bands; mid and hind femora, tibiae and basitarsi rufous; clypeus truncate below .................................................................................... A. erythroptera (Banks, 1946)