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 Author Triapitsyn, Serguei V. text Zootaxa 2006 1203 1 38 journal article 50803 10.5281/zenodo.172335 076b5447-7740-4af0-aef5-e34d9724424f 1175­5326 172335 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