NEW SPIDER WASPS — DREISBACH 189 



No trace of yellowish pubescence, all silvery; at least all coxae black, except 

 tips (or more of posterior pair) may be yellowish; at least four apical 

 tarsal joints (of posterior pair) may be yellowish; at least four apical 

 tarsal joints of posterior legs black and posterior metatarsal joint darker 

 than the similar joints of first two pairs 21 



20. Legs almost wholly yellowish, apex forecoxae, apical half of last two pairs 



and all rest of legs except apical two or three tarsal joints yellow; antennae 

 brown above, yellow below; thorax bright green; abdomen with dense, 

 slightly yellowish pubescence. Bolivia .... 63. aiirarius, new species 

 Coxae black, yellowish at tip; trochanters yellow, more or less mottled with 

 black; rest of legs yellowish except apical joint of first two pairs and last 

 two joints of last pair are black; antennae black above, yellowish to brown 

 beneath; thorax dull metallic greenish; pubescence not quite so dense 

 and not yellowish on the abdomen; apical edge of tergite and most of 

 apical tergite slightly rufous. Brazil . . . 76. subaurarius, new species 



21. All trochanters yellowish, the apex of all coxae also yellowish; the last four 



tarsal joints of posterior legs blackish, other parts of legs yellow; abdomen 

 with a trace of blue and violaceous reflection (more so than the other 

 species of this group) ; antennae brown almost black. Amazon. 



59. argentinensis, new species 

 All trochanters black but tips may be yellowish 22 



22. Posterior tibiae black; all femora, and first two pairs tibiae yellow; only the 



first metatarsal joint rufous; tips of trochanters yellowish; antennae black 

 above, yellowish beneath; thorax deep shining, green, blue, and violet; 

 abdomen black with patches of pubescence in reflected light; wings hyahne, 

 veins and stigma black. Nova Teutonia, Brazil . 62. pratens, new species 

 Posterior tibiae yellowish or deep rufous, not black 22 



23. Thorax almost black in incident light but strongly dull green in reflected 



light; antennae black; last two pairs of tarsi completely black; first pair 

 dark rufous; a small species with the thorax and abdomen with pubescence 

 in patches in reflected light; abdomen almost black; some longer hairs 



which give a rough appearance. Peru 64. lasios, new species 



Thorax shining green, blue, or purplish; not black in incident light; antennae 

 brown to yellow below, black above; abdomen with slight colored reflection, 

 not black as in preceding; larger and not as delicate appearing as preceding; 

 all femora and tibiae yellowish or rufous 24 



24. All femora, tibiae, and metarsal joints yellowish or rufous; last four tarsal 



joints become increasingly darker toward tips; head almost black and 

 thorax faint purplish, bluish and greenish in both reflected and incident 

 light; abdomen with slight reflection; antennae only slightly brownish 

 beneath; a patch of white pubescence on outer posterior corners of propo- 

 deum; the posterior edge of propodeum with transverse striations; coxae 



with faint purple reflection. Brazil 61. argutus, new species 



Last two metatarsal joints black or almost so; thorax a strong bright shining 

 green; no purple reflection; head with a very faint dark-green reflection; 

 abdomen shining with a faint colored reflection; antennae strongly yel- 

 lowish beneath; patch of white pubescence at outer posterior corners of 

 propodeum smaller; no striations on posterior surface of propodeum; 

 coxae almost black but with a faint greenish reflection. Brazil. 



62. pratens, new species 



