Mymaridae

Albarracin, Erica Luft, Triapitsyn, Serguei V. & Virla, Eduardo G., 2009, Annotated key to the genera of Mymaridae (Hymenoptera: Chalcidoidea) in Argentina, Zootaxa 2129, pp. 1-28 : 12-14

Key to the genera of Mymaridae in Argentina (females)

1 Tarsi 3-segmented ( Fig. 1 ).............................................................................................. Kikiki Huber & Beardsley

- Tarsi 4-or 5-segmented ............................................................................................................................................ 2

2 Tarsi 5-segmented.................................................................................................................................................... 3

- Tarsi 4-segmented.................................................................................................................................................. 13

3(2) Metasoma broadly sessile ( Figs 2, 3 ) or subsessile (in Litus Haliday with petiole wider than long and not evident in dry specimens)..................................................................................................................................................... 4

- Metasoma constricted at base, with petiole of varied length, but evident in dry specimens ( Fig. 31 ) ................... 8

4(3) Funicle 5-segmented ( Fig. 4 ), posterior margin of forewing excised behind venation ( Fig. 5 ). Alaptus Westwood

- Antennal funicle 6- or 7-segmented; posterior margin of forewing not or little excised behind venation ............. 5

5(4) Head and mesosoma strongly sculptured; metasoma subsessile (petiole wider than long and not evident in dry specimens) ( Fig. 3 ); funicle 6-segmented........................................................................................... Litus Haliday

- Head and mesosoma very weakly sculptured; metasoma sessile; funicle 6- or 7-segmented ................................ 6

6(5) Antennal scape with 2 or 3 setaceous teeth; mandible blade-like, with a tooth and a little denticle, projected downward and not overlapping ( Fig. 6 ); funicle 7-segmented......................................................... Dicopus Enock

- Antennal scape without setaceous teeth; mandible bidentate, overlapping each other; funicle 6- or 7-segmented. ................................................................................................................................................................................. 7

7(6) Forewing narrow and elongate, anterior and posterior margins almost parallel; occiput slightly emarginate medi- ally ( Fig. 2 ); funicle 7-segmented (F2 sometimes ring-like)............................................... Callodicopus Ogloblin

- Forewing elongately spatulate; occiput forming an acute V-shaped emargination; funicle 6- or 7-segmented (F2 sometimes ring-like). ......................................................................................................... Dicopomorpha Ogloblin

8(3) Funicle 4- or 5-segmented....................................................................................................................................... 9

- Funicle at least 6-segmented ................................................................................................................................. 10

9(8) Fully winged; venation extending over 0.5 length of forewing ( Fig. 7 ); ocelli present, stemmaticum quadrate; occipital carina absent; pronotum, mesoscutum and scutellum not transverse ............................... Arescon Walker

- Wingless; ocelli absent; stemmaticum absent; occipital carina present; pronotum, mesoscutum and scutellum transverse, 2.5-3.0 x as wide as long (only winged males known from Argentina; similar to males of Arescon , but in Myrmecomymar stemmaticum absent).................................................................... Myrmecomymar Yoshimoto

10(8) Funicle 6- or 7-segmented; if 7-segmented, second segment ring-like, much shorter than first segment ........... 11

- Funicle 8-segmented ( Fig. 8 )................................................................................................................................. 12

11(10) Mandible with 2 teeth..................................................................................................... Camptopteroides Viggiani

- Mandible with 1 tooth ........................................................................................................... Camptoptera Foerster

12(10) Dorsellum rhomboidal or strap-shaped, with its posterior margin straight ......................... Gonatocerus Nees s. l.

- Dorsellum mostly strap-shaped but with posterior margin angulate medially, with a little projection ( Fig. 9 ) ....... ................................................................................................................................................ Gahanopsis Ogloblin

13(2) Clava 3-segmented ( Fig. 10 ) ................................................................................................................................. 14

- Clava 1- or 2-segmented........................................................................................................................................ 15

14(13) Fully winged...................................................................................................................... Neostethynium Ogloblin

- Wingless ................................................................................................................ Notomymar Doutt & Yoshimoto

15(13) Clava 1-segmented ................................................................................................................................................ 19

- Clava 2-segmented ............................................................................................................................................... 16

16(15) Marginal vein with hypochaeta about midway between proximal and distal macrochaetae ( Fig. 11 ); propodeum strongly sloping relative to scutellum and with a median longitudinal carina ( Fig. 12 ) ....... Anaphes Haliday , part

- Marginal vein with hypochaeta next to proximal macrochaeta; propodeum almost in same plane as scutellum and smooth ................................................................................................................................................................... 17

17(16) Scutellum longitudinally divided by a distinct median groove ( Fig. 13 ); forewing usually strongly expanded api- cally ( Fig. 14 ) ................................................................................................................... Schizophragma Ogloblin

- Scutellum entire or at most longitudinally divided posteriorly by a faint median groove; forewing at most slightly expanded apically .................................................................................................................................................. 18

18(17) Clava usually with apical finger-like projection ( Fig. 15 ); mandibles reduced; scutellum often longitudinally divided posteriorly by a faint median groove ......................................................................... Omyomymar Schauff

- Clava rounded, without apical finger-like projection ( Fig. 16 ); mandibles not reduced; scutellum undivided........ .............................................................................................................................................. Cleruchus Enock , part

19(15) Venation almost 0.5 length of forewing ( Fig. 17 ) ............................................................... Australomymar Girault

- Venation less than 0.33 length of forewing ........................................................................................................... 20

20(19) Funicle 8-segmented................................................................................................. Ptilomymar Annecke & Doutt

- Funicle 6-segmented, rarely 5-segmented (in Erythmelus (Parallelaptera) rex (Girault) and sometimes in minute specimens of subgenus Erythmelus Enock s. str.) ................................................................................................. 21

21(20) Metasoma sessile or subsessile (petiole wider than long) ( Figs 2, 3 ) ................................................................... 22

- Metasoma markedly petiolate (petiole of varied length, but always longer than wide) ( Fig. 31 ). ....................... 25

22(21) Metasoma with apical sternite much larger than preceeding sternite, forming a distinct, V-shaped hypopygium often extending slightly beyond apex of gaster ( Fig. 18 ); mandibles reduced to minute stubs ................................ ..................................................................................................................................................... Erythmelus Enock

- Metasoma with apical sternite similar to preceeding sternites, short and inconspicuous; mandibles normal, over- lapping and with 3 teeth......................................................................................................................................... 23

23(22) Marginal vein with hypochaeta about midway between proximal and distal macrochaetae ( Fig. 11 ); propodeum strongly sloping relative to scutellum and with a medial longitudinal carina ( Fig. 12 ); body usually black or very dark brown............................................................................................................................. Anaphes Haliday , part

- Marginal vein with hypochaeta next to proximal macrochaeta; propodeum almost in same plane as scutellum and smooth; body usually yellow, gray, light brown or brown, sometimes dark brown.............................................. 24

24(23) Pronotum entire; scutellum clearly divided into anterior and posterior parts and the posterior part longitudinally

divided by a median groove ( Fig. 19 ); face evenly convex in lateral view................................... Anagrus Haliday - Pronotum divided medially; scutellum entire ( Fig. 20 ); face in lateral view usually angular, strongly receding below toruli........................................................................................................................... Cleruchus Enock , part 25(21) Scutellum divided medially by a longitudinal groove ( Fig. 21 ) ....................................... Tetrapolynema Ogloblin

- Scutellum entire..................................................................................................................................................... 26

26(25) Toruli almost touching vertex, very close to transverse trabecula (much less than 1 torular diameter) ( Fig. 22 ) .... ................................................................................................................................................ Neomymar Crawford

- Toruli separated from transverse trabecula by at least 1 torular diameter ( Fig. 23 ).............................................. 27

27(26) Forewing broadly spatulate ( Fig. 24 ); stigmal vein with a short apical RS-process ( Fig. 25 ).................................. ............................................................................................................................................. Parapolynema Fidalgo

- Forewing shape different, not broadly spatulate; stigmal vein without an apical process .................................... 28

28(27) Basal vein indicated by distinct, curved darkening of membrane ( Fig. 26 )...................... Xenopolynema Ogloblin

- Basal vein not indicated ........................................................................................................................................29

29(28) Face with distinct V-shaped subantennal grooves ( Fig. 23 ).................................................................................. 30

- Face without subantennal grooves or with subparallel subantennal grooves (in Stephanodes Enock ) ................ 31

30(29) Head about as wide as mesosoma; forewing without narrowing of the blade beyond venation, marginal vein rela- tively short ( Figs 23 , 27 ).................................................................................................... Kalopolynema Ogloblin

- Head very large and high, markedly wider than mesosoma; forewing with a narrowing of the blade beyond vena- tion, marginal vein relatively long ( Fig. 28 )...................................................................... Platypolynema Ogloblin

31(29) Metatibia with conspicuous, strong setae at least as long as width of metatibia ( Fig. 29 ). Cnecomymar Ogloblin

- Metatibia without such setae (setae shorter than width of metatibia) ................................................................... 32

32(31) Antennal funicle segments 5 and 6 about as wide as clava ( Fig. 30 )….. ..................................... Erdosiella Soyka

- Antennal funicle segments 5 and 6 much narrower than clava ............................................................................. 33

33(32) Petiole attached to gastral tergum.......................................................................................................................... 34

- Petiole attached to gastral sternum........................................................................................................................ 36

34(33) Propleura not abutting anteriorly, thus prosternum “open”; face without a pit next to each torulus ........................ ........................................................................................................................................... Polynema Haliday s. str.

- Propleura abutting each other anteriorly along the midline, thus prosternum “closed”; face with a pit next to each torulus .................................................................................................................................................................... 35

35(34) Propodeum either smooth or with a median carina, or sometimes with transverse wrinkles ................................... ................................................................................................................ Polynema (subgenus Doriclytus Foerster )

- Propodeum with two subparallel submedian carinae connected by a transverse carina near anterior margin of propodeum .............................................................................................................................. Polynemula Ogloblin

36(33) Propodeum medially with V-shaped median carina of various size and shape ( Figs 31, 32 ) ................................... .......................................................................................................................................... Acmopolynema Ogloblin

- Propodeum either smooth of with a median carina............................................................................................... 37

37(36) Scape with rasp-like sculpture ( Fig. 33 ).................................................................................... Stephanodes Enock

- Scape either smooth or serrate (with cross-ridges) ....................................................... Agalmopolynema Ogloblin

Figures

FIGURES 1 – 4. 1. Kikiki, tarsi. 2. Callodicopus, female body (dorsal view). 3. Litus, mesoscutum and scutellum (dorsal view). 4. Alaptus, female antenna.

FIGURES 29 – 33. 29. Cnecomymar, metatibia. 30. Erdosiella, female antenna. 31. Acmopolynema, habitus (male, dorsal view). 32. Acmopolynema, propodeum (dorsal view). 33. Stephanodes, scape.

FIGURES 5 – 8. 5. Alaptus, forewing. 6. Dicopus, female head (anterior view) and antenna. 7. Arescon, forewing. 8. Gonatocerus, female antenna.

FIGURES 9 – 12. 9. Gahanopsis, mesosoma (dorsal view). 10. Neostethynium, female flagellum. 11. Anaphes, forewing. 12. Anaphes, propodeum (dorsal view).

FIGURES 13 – 16. 13. Schizophragma, mesosoma (dorsal view). 14. Schizophragma, forewing. 15. Omyomymar, female antenna. 16. Cleruchus, female antenna.

FIGURES 17 – 20. 17. Australomymar, forewing. 18. Erythmelus, female metasoma (lateral view). 19. Anagrus, mesosoma (dorsal view). 20. Cleruchus, mesosoma (dorsal view).

FIGURES 21 – 24. 21. Tetrapolynema, mesosoma (dorsal view). 22. Neomymar, head (anterior view). 23. Kalopolynema, head (anterior view). 24. Parapolynema, forewing.

FIGURES 25 – 28. 25. Parapolynema, forewing base. 26. Xenopolynema areolatum, forewing. 27. Kalopolynema, forewing. 28. Platypolynema, forewing.