38 Z. BOUCEK 



hidden in posterolateral view, lateral ocellus about 3 diameters from eye (Text- 

 fig. 91); pronotum anteriorly with round pale spot . birkmani Brues (p. 79) 



— Interocellar area not strongly raised above ocelli which are of normal size (Text-fig. 



88), the median visible in postero-lateral view, the lateral closer to eye than 

 above ; pronotum without round spot anteriorly ...... 27 



27 Apex of gaster, in § including hind part of fifth tergite, golden, with abundant 



golden pubescence ; dorsellum non-metallic, its marginal carina narrow, laminate, 

 regular; pronotum more than twice as broad as long, its yellow premarginal band 

 broadest in the middle; Mexico ..... auripyga sp. n. (p. 80) 



— Apex of gaster not conspicuously golden; dorsellum metallic, short, its marginal 



carina not laminate ; pronotum at most twice as broad as long, premarginal yellow 

 band narrowed or interrupted medially; southern South America 



desantisi sp. n. (p. 81) 



28 Hind tibia truncate at apex, outer spur long (Text-figs 96, 99) ; median carina of 



propodeum usually strong, often high or even tooth-like (exception : sumichrastii ; 

 Text-fig. 101) ............ 29 



— Hind tibia apically oblique, ventrally produced into a more or less conspicuous 



spine, the outer spur on apex of spine rudimentary or indistinct (Text-figs 69, 71, 



79, 84) ; median carina of propodeum low, weak or indistinct .... 35 



29 Hind coxa broadly smooth on its upper half, including dorsal edge (Text-fig. 94) ; 



hind femur also very sparsely punctured, mainly pale yellow with dark median 

 streak; ovipositor reaching thorax .... speifera Walker (p. 85) 



— Hind coxa at least laterally on dorsal edge with abundant punctures; hind femur 



otherwise ............. 30 



30 Basal half of fore wing blackish, apex whitish; body very slender, including hind 



legs (Text-fig. 99) ; ovipositor reaching thorax, first tergite in § with diverging 

 dorsal furrows ......... imitans sp. n. (p. 83) 



— Fore wing otherwise, never so dark ; body not very slender, hind legs much broader ; 



ovipositor not reaching middle of first tergite, latter in 9 without dorsal furrows . 31 



31 Propodeum with unusually dense pilosity (Text-fig. 100), hairs on median area 



directed mainly caudad ; broad apex of gaster clothed with thick golden pubescence ; 

 ovipositor barely half as long as hind tibia, not reaching middle of the strongly 

 convex fifth tergite (Text-figs 100, 101) ; Mexico . sumichrastii Cresson (p. 89) 



— Propodeum with sparser pilosity, hairs medially directed headwards or, if median 



carina high, sidewards; apex of gaster not broadly golden-clothed ; ovipositor 

 longer than half the hind tibia, fifth tergite in $ convex only basally ... 32 



32 Pronotum with premarginal carina indicated by bare line; thoracic dorsum not very 



densely punctured; hind coxa in depression with narrow smooth streak; malar 

 space long ............. 33 



— Pronotum without a trace of premarginal carina, as well as mesoscutum densely 



punctured; hind coxa in depression regularly densely punctured; malar space 

 short .............. 34 



33 Head bright cupreous; malar space slightly shorter than scapus; first tergite in $ 



even in basal half with scattered punctures, posteriorly regularly punctured and 

 pilose; hind margin of fourth tergite angulate; fifth tergite strongly swollen, 

 ovipositor not reaching its base (Text-fig. 96) . . nigripyga sp. n. (p. 86) 



— Head dark purplish ; malar space virtually as long as scapus ; first tergite in anterior 



two-thirds almost without punctures, with two sublateral depressions, submedially 

 at apex with patches of dense white hairs; hind margin of fourth tergite (§) 

 virtually straight ; fifth tergite weakly swollen, dark purplish, ovipositor reaching 

 its base (Text-fig. 105) ...... versicolor sp. n. (p. 87) 



34 Ovipositor reaching hind margin of first tergite; interantennal area with distinct 



median keel ; fore wing intensively infumate ; Florida, Mexico 



robertsoni Crawford (p. 89) 



