Mymaridae

Triapitsyn, Serguei V., 2006, A key to the Mymaridae (Hymenoptera) egg parasitoids of proconiine sharpshooters (Hemiptera: Cicadellidae) in the Nearctic region, with description of two new species of Gonatocerus, Zootaxa 1203, pp. 1-38 : 4-6

Key to genera and species of Mymaridae , egg parasitoids of Proconiini (Cicadellidae) in the Nearctic region

1 Tarsi 4­segmented ......................................................................................................... 2

­ Tarsi 5­segmented ( Gonatocerus Nees ) ....................................................................... 4

2 Metasoma distinctly petiolate; forewing blade with dark bands and modified setae ( Fig. 1 ) ............................................................................. Acmopolynema sema Schauff

­ Metasoma sessile ( Fig. 2 ); forewing blade without dark bands or modified setae ( Anagrus Haliday ) ........................................................................................................ 3

3 Forewing narrow ( Fig. 2 ), 8.0–9.5x as long as wide; clava of female antenna with 5 longitudinal sensilla ...................................................................... Anagrus epos Girault

­ Forewing wide, 4.5–4.9x as long as wide; clava of female antenna with 6 longitudinal sensilla .............................................................. Anagrus stethynioides S. Triapitsyn

4 Female (flagellum clavate, consisting of 8­segmented funicle and 1­segmented clava) ....................................................................................................................................... 5

­ Male (flagellum filiform, 11­segmented) ................................................................... 15

5 Propodeum distinctly rugose lateral to submedial carinae ( Figs 4 , 8 , 11 ) ( morrilli subgroup) ...................................................................................................................... 6

­ Propodeum smooth lateral to submedial carinae (as in Fig. 23 ) (ater subgroup) ........ 8

6 Body mostly dark brown to black; F5 brown basally and whitish or light brownish apically, F6 whitish­light brownish ( Fig. 3 ) ...................... G. morgani S. Triapitsyn, sp. n.

­ Body mostly yellow­brown; both F5 and F6 white (as in Fig. 10 ) .............................. 7

7 Propodeum with submedial carinae parallel and closer to each other ( Fig. 8 ) .............. ........................................................................................................ G. morrilli (Howard)

­ Propodeum with submedial carinae curved and more apart from each other ( Fig. 11 ). ................................................................................ G. walkerjonesi S. Triapitsyn, sp. n.

8 Forewing with cubital row of microtrichia complete, extending to base of marginal vein ( Figs 16, 17 , 24 , 27 ) ............................................................................................. 9

­ Forewing with cubital row of microtrichia incomplete, not extending to base of marginal vein (no microtrichia behind marginal vein, at most a few microtrichia just behind apex of venation) ( Figs 28 , 30) ...................................................................... 13

9 F5–F7 distinctly lighter than other funicle segments ( Fig. 15 ) ...... G. atriclavus Girault

­ F5–F7 more or less concolorous with other funicle segments ................................... 10

10 Forewing blade with a narrow, distinct brown fascia extending from stigmal vein to hind margin ( Fig. 17 ) ....................................................................... G. fasciatus Girault

­ Forewing blade without such a fascia or slightly, more or less uniformly, infumated ... ..................................................................................................................................... 11

11 Head and mesosoma mostly yellow, with some brown ( Fig. 20 ) .. G. triguttatus Girault

­ Head and mesosoma mostly dark brown (as in Fig. 25 ) except mesosomal sternum with a distinct, well­defined yellow streak between each fore and middle coxae ( Fig. 22 ) ............................................................................................................................... 12

12 F1 without longitudinal sensilla ( Fig. 21 ); forewing almost hyaline, at most with a faint, uniform brownish tinge ( Fig. 24 ) ........................................... G. ashmeadi Girault

­ F1 usually with 2 longitudinal sensilla ( Fig. 26 ), rarely with 1 sensillum; forewing blade notably infuscated beyond venation, more conspicuously so behind tip of venation ( Fig. 27 ) .................................................................................... G. uat S. Triapitsyn

13 Forewing blade with a distinct infumate spot just beyond apex of venation ( Fig. 28 ) .. ................................................................................................... G. novifasciatus Girault

­ Forewing blade without infumate spot (as in Fig. 30) (the incomptus / impar complex) ..................................................................................................................................... 14

14 F3–F8 each with 2 longitudinal sensilla (Fig. 29) ........................... G. incomptus Huber

­ At least one funicle segment among F3–F6 without longitudinal sensilla or only with 1 sensillum, in different combinations (Figs 31–34) ......................................................... ............................................................. G. impar Huber, G. sp(p). near incomptus / impar

15 Propodeum distinctly rugose lateral to submedial carinae ( Figs 4 , 8 , 11 ) ( morrilli subgroup) .................................................................................................................... 16

­ Propodeum smooth lateral to submedial carinae (as in Fig. 23 ) (ater subgroup) ...... 18

16 Mesosoma dark brown to black; forewing blade hyaline (as in Fig. 5 ) ......................... ....................................................................................... G. morgani S. Triapitsyn, sp. n.

­ Mesosoma yellowish­brown; forewing blade with an infumate spot (sometimes inconspicuous) just beyond venation (as in Fig. 12 ) ........................................................... 17

17 Propodeum with submedial carinae parallel and closer to each other (as in Fig. 8 ); apodeme of genital sternite almost as long as aedeagal apodemes ( Fig. 9 ) ......................... ........................................................................................................ G. morrilli (Howard)

­ Propodeum with submedial carinae curved and more apart from each other (as in Fig. 11 ); apodeme of genital sternite notably longer than aedeagal apodemes ( Fig. 14 ) ...... ................................................................................ G. walkerjonesi S. Triapitsyn, sp. n.

18 Forewing with cubital row of microtrichia complete, extending to base of marginal vein ( Figs 16, 17 , 24 , 27 ) ........................................................................................... 19

­ Forewing with cubital row of microtrichia incomplete, not extending to base of marginal vein (no microtrichia behind marginal vein, at most a few microtrichia just behind apex of venation) (as in Figs 28 , 30) .............................................................. 23

19 Forewing blade with a narrow, distinct brown fascia extending from stigmal vein to hind margin (as in Fig. 17 ) ............................................................... G. fasciatus Girault

­ Forewing blade without such a fascia or slightly, more or less uniformly, infumated 20

20 Mesosoma dorsally yellow­orange or light brown to brown ..................................... 21

­ Mesosoma completely dark brown ............................................................................ 22

21 Mesosoma dorsally yellow­orange, with some brown ................... G. triguttatus Girault

­ Mesosoma dorsally light brown to brown, with some dark brown G. atriclavus Girault

22 Forewing almost hyaline, at most with a faint, uniform brownish tinge (as in Fig. 24 ) (widespread in southeastern USA, southern and south­central California, as well as in northeastern Mexico (Nuevo León and Tamaulipas North of [and including] Ciudad Victoria) .......................................................................................... G. ashmeadi Girault

­ Forewing blade notably infuscated beyond venation, more conspicuously so behind tip of venation (as in Fig. 27 ) (in the Nearctic region, occurring only in the southernmost Nearctic part of Tamaulipas, Mexico, South of [but excluding] Ciudad Victoria) ........ .......................................................................................................... G. uat S. Triapitsyn

23 Forewing blade with a distinct infumate spot just beyond apex of venation, not reaching anterior margin (as in Fig. 28 ) ............................................. G. novifasciatus Girault

­ Forewing blade hyaline, without infumate spot (as in Fig. 30) (the incomptus / impar complex) ........... G. incomptus Huber, G. i m p a r Huber, G. sp(p). near incomptus / impar

Figures

FIGURE 14. Genitalia of Gonatocerus walkerjonesi (male).

FIGURE 20. Gonatocerus triguttatus (female). Photo by Jack Kelly Clark, University of California.

FIGURE 25. Gonatocerus ashmeadi (female). Photo by Jack Kelly Clark, University of California.

FIGURES 1, 2. 1. Forewing of Acmopolynema sema (female). 2. Anagrus epos (female).

FIGURES 3, 4. Gonatocerus morgani (female). 3. Antenna. 4. Propodeum.

FIGURES 5 – 8. Gonatocerus spp. 5 – 7. G. m o rg a n i. 5. Forewing (female). 6. Antenna (male). 7. Genitalia (male). 8. Propodeum of G. morrilli (female).

FIGURES 9 – 13. Gonatocerus spp. 9. Genitalia of G. morrilli (male). 10 – 13. G. walkerjonesi. 10. Antenna (female). 11. Propodeum (female). 12. Forewing (female). 13. Antenna (male).

FIGURES 21 – 24. Gonatocerus ashmeadi (female). 21. Pedicel and basal funicle segments. 22. Mesosomal sternum. 23. Propodeum. 24. Forewing.

FIGURES 15 – 17. Gonatocerus spp. 15, 16. G. atriclavus (female). 15. Antenna. 16. Forewing. 17. Forewing of G. fasciatus (female).

FIGURES 26 – 28. Gonatocerus spp. 26, 27. G. u at (female). 26. Pedicel and basal funicle segments. 27. Forewing. 28. Forewing of G. novifasciatus (female).