Ageniella (Ameragenia), 1945

Rapoza, Márcia & Waichert, Cecilia, 2022, Two new species of Ageniella Banks, 1912 (Hymenoptera: Pompilidae) from Brazil and updated keys, European Journal of Taxonomy 787, pp. 71-85 : 80-81

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

1. Forewing maculated with darkened bands or distinct darkened spots ............................................. 2

– Forewing without maculations of darkened bands or darkened spots, if darkened spot present, then very weak .........................................................................................................................................11

2. Body black and rufous ...................................................................................................................... 3

– Body entirely black or blue ............................................................................................................... 5

3. Clypeus large, apical median margin with two teeth; head and pronotum rufous; metasoma black with blue metallic reflections; forewing hyaline with two darkened bands ....................................... .......................................................................................................... A. sanguinolenta (Smith, 1864)

– Clypeus various; head black (clypeus rufous in A. fabricii ), pronotum various; metasoma various; forewing with or without darkened bands ........................................................................................ 4

4. Metasoma rufous; mesosoma and head black; forewings subhyaline with two darkened bands, the one on the basal vein narrow .................................................................... A. similaris ( Banks, 1946)

– Metasoma black; mesosoma entirely or partially rufous, head black, clypeus rufous; forewing hyaline with two darkened bands, outer band incomplete .......................... A. fabricii ( Banks, 1944)

5. Forewing with darkened spots partially covering cell 2M and fully covering cell 2Rs; cell 2Rs 0.69 × as long as 3Rs; clypeus trapezoidal, its surface slightly arched; fore tibia pale castaneous ............... ...................................................................................................................... A. agitata (Smith, 1873)

– Forewing with one or two transversal darkened bands; cells 2Rs and 3Rs of different lengths; clypeus various; fore tibia black .................................................................................................................... 6

6. Forewing with only one distinct darkened band (sometimes inconspicuous); silver setae covering integument on frons and distal portion of propodeum ...................................................................... 7

– Forewing with two distinct darkened bands; if silver setae present, not densely covering frons and propodeum ........................................................................................................................................ 8

7. Mid and hind femora, and inner side of fore femur pale castaneous; absence of blue reflections on hindwing veins and integument .............................................................. A. rustica (Fabricius, 1804)

– Fore, mid and hind femora black; blue reflections on hindwing veins and integument ..................... ........................................................................................................................ A. zeteki (Banks, 1925)

8. Integument black or blue without short and sparse golden pubescence; antennae various .............. 9

– Integument black with short and sparse golden pubescence, except propodeum, which has silver pubescence; antennomeres 1–8 light castaneous, segments 9–12 castaneous .................................... ................................................................................................................... A. banksii Waichert, 2018

9. Head and mesosoma blue with greenish reflections; clypeus blue with greenish reflections; antennae black .................................................................................................................... A. caerulea sp. nov.

– Head and mesosoma never blue, without greenish reflections; clypeus different than blue; antennae various ............................................................................................................................................. 10

10. Clypeus black; only antennomeres 7–10 yellowish; fore femur, tibia and tarsi black ....................... .................................................................................................................... A. citricornis (Fox, 1897)

– Clypeus pale castaneous; antennomeres entirely yellow; fore femur, tibia and tarsi black or dark castaneous and pale castaneous on the inner face ..................................... A. pretiosa ( Banks, 1946)

11. Integument black with fore, mid and hind tibiae pale castaneous; forewing with a faint darkened spot on cells 2Rs and 2M ........................................................................................................................ 12

– Integument black, mid and hind tibiae black; forewing various .................................................... 13

12. Integument black with faint bluish reflections on head and metasoma; frons covered with silver scale-like setae from torulus to clypeus; anterior margin of clypeus trapezoidal; only fore tibia light castaneous ..................................................................................................... A. cleora ( Banks, 1946)

– Integument black without bluish reflections on head and metasoma; frons without silver scalelike setae; anterior margin of clypeus rounded; fore, mid and hind tibiae with apical portion light castaneous ....................................................................................................... A. varipes (Fox, 1897)

13. Clypeus large, its surface arched, anterior margin with angulate median tooth ................................. ....................................................................................................................... A. clypeata (Fox, 1897)

– Clypeus with surface truncate, anterior margin without tooth ........................................................ 14

14. Legs and antennae entirely black; cell 2Rs about 0.65 × as long as 3Rs, tCu2 vein curved, very arched, as well as vein tCu1 ......................................................................... A. thione ( Banks, 1946)

– Legs and antennae black, tibia with yellowish coloration; cells 2Rs and 3Rs of almost equal size .. ......................................................................................................................... A. serrula (Fox, 1897)