Key to species of Anagyrus in Argentina, females

1 Fore wing disc with 2 or 3 distinct dark bands (Figs 9, 36)..................................................... 2

- Fore wing disc either hyaline or at most with a faint, inconspicuous infuscation behind submarginal vein (Fig. 51)......... 3

2(1) Fore wing (Fig. 9) disc with 2 distinct dark bands.......................................... A. bifasciatus (Brèthes)

- Fore wing (Fig. 36) disc with 3 distinct dark bands (known only from Chile)........................ A. porteri (Brèthes)

3(1) Ovipositor (Fig. 4) exserted beyond apex of gaster by about 0.25× of total ovipositor length......... A. bellator (De Santis)

- Ovipositor either not exserted or exserted beyond apex of gaster by at most 0.1× of total ovipositor length............... 4

4(3) Body completely dark (brown, dark brown, or black)......................................................... 5

- Body with at least some orange, light brown, or yellowish areas................................................. 9

5(4) F4–F6 dark brown or black..............................................................................6

- F4–F6 pale, grayish, or dusky yellowish.................................................................... 8

6(5) Scape (excluding radicle) slender (Figs 31, 50), at least 5.0× as long as wide....................................... 7

– Scape (excluding radicle) strongly broadened, at most 2.5× as long as wide........................ A. lopezi (De Santis)

7(6) F2 whitish (Fig. 31); fore wing disc hyaline (Fig. 33)..................................... A. montivagus (De Santis)

- F2 dark brown (Fig. 50); fore wing disc with a faint, inconspicuous infuscation behind submarginal vein (Fig. 51)............................................................................................. A. rusticus (De Santis)

8(5) F1 about 1.5× as long as F2 (Fig. 28); metafemur bicolorous with about basal half contrastingly darker than about apical half (Fig. 29).......................................................................... A. malenotus (De Santis)

- F1 at most about 1.2× as long as F2 (Fig. 17); metafemur uniformly dark (Fig. 18)................... A. cachamai, sp. n.

9(4) F1 and F2 entirely dark (brown, dark brown, or black)....................................................... 10

- F1 dark or partially dark, but F2 whitish................................................................... 11

10(9) Flagellum with at most F1–F3 entirely dark (Fig. 39), with F3 varying from almost entirely white to grayish or partially brown- ish, often only basally..................................................................... A. quilmes, sp. n.

- Flagellum with F1–F5 dark............................................................. A. jucundus De Santis

11(9) F1 with base dark and apex whitish...................................................................... 12

- F1 entirely dark...................................................................................... 14

12(11) F1 a little shorter than pedicel; clava about as long as combined length of F4–F6 or a little shorter (at least as long as combined length of half of F4 plus F5 and F6)...................................................................... 13

- F1 a little longer than pedicel; clava about as long as combined length of F5 and F6................... A. ananatis Gahan

13(12) F2–F6 and clava white or at most clava slightly yellowish.............................. A. pseudococci (Girault) s. str.

- F2–F6 and clava yellowish white and partially darkened (Fig. 2)............................ A. aciculatus (Blanchard)

14(11) Scape (excluding radicle) relatively slender, about 4× as long as wide............................ A. tanystis De Santis

- Scape (excluding radicle) relatively broad, about 2.5× as long as wide......................... A. brevistigma De Santis