Gonatocerus, Nees, 1834

Triapitsyn, Serguei V., Huber, John T., Logarzo, Guillermo A., Berezovskiy, Vladimir V. & Aquino, Daniel A., 2010, Review of Gonatocerus (Hymenoptera: Mymaridae) in the Neotropical region, with description of eleven new species, Zootaxa 2456, pp. 1-243 : 12

Key to subgenera of Gonatocerus (both sexes)

1 Pronotum with lateral lobes usually widely separated by lightly sclerotized median area but, if not divided into lobes (i.e. entire), the pronotum very short and not visible in dorsal view, the head thus closely appressed to mesoscutum; dorsellum more or less strap-shaped ............................................................................................................................ 2

- Pronotum with lateral lobes abutting medially, exceptionally with lobes widely separated by distinct median area [in G. (Gonatocerus) perforator (Ogloblin) ] or, if entire [ masneri species group of G. ( Cosmocomoidea )], the pronotum as long as mesoscutum and clearly visible in dorsal view, the head distinctly separated from mesoscutum; dorsellum rhomboidal or triangular ............................................................................................................................................... 3

2(1) Dorsellum with posterior margin straight ( Figs 71 , 78 ); propodeum with flat, usually spiculate median area bordered laterally by fine lines ....................................................................................................G. ( Lymaenon Walker ) stat. rev.

- Dorsellum with posterior margin slightly sinuate, forming a little median projection ( Figs 160 , 169 , 173 ); propodeum with median groove ........................................................................ G. ( Gahanopsis Ogloblin ) syn. & stat. nov.

3(1) Back of head divided by transverse or oblique suture into gena ventrally and occiput dorsally; female gaster more or less (usually strongly) produced anteriorly under mesosoma .....................G. ( Gastrogonatocerus Ogloblin ) stat. rev.

- Back of head entire or with a round or oval occipital sulcus; female gaster not or rarely slightly produced anteriorly under mesosoma............................................................................................................................................................ 4

4(3) Propodeum usually smooth medially or, occasionally, either with 1 usually faint median carina or 2 incomplete submedian carinae hardly visible as very fine lines, but forewing with setae extending to base of marginal vein ............ ............................................................................................................................... G. ( Gonatocerus Nees ab Esenbeck)

- Propodeum usually with at least incomplete submedian carinae, but if rarely almost smooth medially then forewing with setae absent or sparse behind marginal vein ............................................ G. ( Cosmocomoidea Howard ) stat. rev.

Figures

FIGURES 69 – 72. Gonatocerus (Lymaenon) cubensis ♀ (holotype): 69, antenna; 70, body; 71, dorsellum and propodeum; 72, wings.

FIGURES 77 – 80. Gonatocerus (Lymaenon) litoralis ♀ (77 – Monumento Natural Alerce Costero, Región X, Chile; 78 – 80 – Parque Nacional Nahuelbuta, Región IX, Chile): 77, antenna; 78, dorsellum and propodeum; 79, mesosoma and metasoma; 80, forewing.

FIGURES 158 – 161. Gonatocerus (Gahanopsis) arkadak ♀ (holotype): 158, antenna; 159, mesosoma and metasoma; 160, dorsellum and propodeum; 161, wings.

FIGURES 168 – 171. Gonatocerus (Gahanopsis) pusilus ♀ (168 – Loreto, Misiones, Argentina; 169 – 171 – Universidade Federal de Minas Gerais campus, Belo Horizonte, Minas Gerais, Brazil): 168, antenna; 169, mesosoma; 170, forewing; 171, hind wing.

FIGURES 172 – 174. Gonatocerus (Gahanopsis) pusilus ♂ (Loreto, Misiones, Argentina): 172, antenna; 173, dorsellum and propodeum; 174, wings.