NEW SPIDER WASPS — DREISBACH 171 



32. Auplopus hidalgoensis, new species 



Holotype female. Clypeus black, rest of head dull faint greenish 

 with a dehcate purple iridescence; thorax about the same; abdomen 

 with strong bluish and slightly purple coloration; antennae black; 

 legs all black with blue reflection on femora and coxae ; wings fuscous ; 

 ratio of third and fourth antennal joints is 12:10; pygidium not so 

 smooth and shining as usual (partly telescoped). 



Length 9.2 mm. 



Holotjrpe female: Guerrero Mills, Hidalgo, Mexico, W. M. Mann 

 (MCZ). 



33. Auplopus fuscuSi new species 



Holotype female. Head and abdomen black, no reflected colors; 

 thorax bluish green with very strong purple reflection over almost 

 whole surface; head and thorax with fairly long whitish hair; antennae 

 black, slightly brownish beneath on apical half; coxae bluish, legs 

 beyond black with no reflection; ratio of lengths of thu*d and fourth 

 antennal joints is 11:8. 



Length 6.0 mm. 



Holot3rpe female: Santa Ana, Costa Rica, May 17, 1957, no. 

 718-285, PAB (USNM). 



34. Auplopus albifrons, new species 



Figures 24, 25 



Holotype male. Front and vertex black; thorax back of pronotum 

 black in certain light, greenish in other reflection; first segment of 

 abdomen (except basal half of dorsal surface which is black) and 

 about basal third of the second, and base of fourth, dull yellowish; 

 rest of abdomen black; mouth parts, all the mandibles, the apex of 

 posterior orbits, clypeus, face and the anterior orbits broadly to the 

 foreocellus, yellowish white; apex of mandibles reddish; the first five 

 joints of antennae yellowish above and below, brown from there to 

 tip; pronotum and all of forelegs, yellowish, with the dorsal part of 

 pronotum mottled with black, and the apical tarsal joints blackish; 

 midlegs all yellowish (including coxae) except the last four tarsal 

 joints are black; last pair coxae yellowish, with the outer sides black, 

 rest of legs yellow except apical half of basitarsi and the apical four 

 tarsal joints, which are blackish; the last tergite is black; fine, thinly 

 placed, shghty golden pubescence on all of head which shows up 

 strongly on black front and vertex, rather long whitish hairs on 

 apical half of posterior orbits; the same slightly golden pubescence 

 over whole thorax; wings hyaline, veins and stigma yellowish, with 

 brilliant glistening yellowish reflection, in certain reflected light the 

 cells are a beautiful bright green; first recurrent vein meets second 



