BRETHES: HIMENÓPTEROS DE LA AMÉRICA MERIDIONAL. 69 
Iphiaulax erythrosoma BRETHES, M. sp. 
2 Ruber, vix mintaceus, antenmis apicem versus, capite et valvis 
terebrac (dimidio apicali obscurius) vir picers, alis modice 
fumosis, dimidio basar hyalinis, anticis stigmate flavo-mi- 
maceo, cellulis cubitali 1.2 vix tota et discoidali postica basi sat 
late hyalinis. Long.: 7,5 mm. Antennae: 7,5 mm. Terebra: 
4 mm. 
Politus, facie rugulosa, apice spatio semilunari vix nitido, genis 
medioeribus, lineis parapsidalibus distinetis, segmento 1. abdominis 
carina antero-laterali intus extusque transverse striata, segmento 2." 
transverso, area media basi sat late, dein apicem versus vix carinata, 
vix apicem segmenti attingente, impressionibus discalibus antice ro- 
tundatis et marginibus forte striatis, linea anteapicali sat impressa, 
segmento 3. etiam transverso, basi striato, area antero-laterali me- 
dium versus elongata et postice paulum striata, segmento 4.” basi 
obsolete striolato. 
1 2 de Tucumán.—Col. Mus. Nac. Buenos Aires, 
Iphiaulax chacoensis BRETHES, M. Sp. 
2 Plus minus ferruginens, capite valuvisque terebrae nigris; an- 
tenmis picers, femoribus 4 posticis plus minus picers; alis fus- 
cis dimidio basali hyalinis, anticis stigmate flavo et fascia 
transversa flavescente, cellulis cubitali 1.2 linea transversa, 
discoidala postica basi et contra venam transverso-cubitalem 
22m hyalinis. Long.: 10 mm. Antennae: 10 mm. Terebra: 
2,5 mM. 
Politus, facie sat dense punctulata vix nitidula, apice spatio brevi 
semilunari notata, genis mediocribus, lineis parapsidalibus impressis. 
segmento 1.” abdominis area media polita apicem versus impressioni- 
bus 2 vix obsoletis notata, impressionibus utrinque carina antero-la- 
terali transverse striatis, segmento 2.” polito area medio basali paulum 
ultra medium attingente, triangulum basalem sat late formante, im- 
pressionibus discalibus in medio paulum elevatis, margine interiore 
e punctis 3 profundis formata, margine exteriore sat transverso, 
segmentis 3 et 4 disco irregulariter punctatis, 3.” area antero-laterali 
medium versus paulum elongata. 
