268 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 paet 3 



tion (Lawrence). 9, Pueblo Nuevo, Chiapas, Mexico, Mar. 20, 1953, 

 E. C. Betchel and E. I. Schlinger (Berkeley). 9, 11 kilometers south 

 of Tumbiscatio, Michoacan, Mexico, Dec. 1, 1950, Ray F. Smith (New- 

 York), cf, 9, Tuxpan, Michoacan, Mexico, July 11, 1951, H. E. 

 Evans (Towues). 



This species ranges from southern Texas to southern Arizona, and 

 southward into Mexico. 



6. Lanugo deserti, new species 



Figures 329,d; 346; 347 



Male: Front wing 5.3 to 7.4 mm. long; mesoscutum polished, its 

 punctures moderately coarse, separated by about 0.6 their diameter; 

 apical transverse carina of propodeum usually moderately strong lat- 

 erally but sometimes almost absent, always absent medially; pleural 

 carina absent below basal transverse carina, or very weak and incom- 

 plete; hypostomal carina, front edge of pronotum, and notaulus as 

 in female. 



Fulvous. Front orbit and mandible yellowish; flagellum sometimes 

 entirely fuscous with a ferruginous tinge beneath, sometimes with a 

 median yellowish band covering about 4 segments, basad of the band 

 fulvous below and infuscate above, apicad of the band entirely fus- 

 cous, or often intermediate between the two color patterns described 

 above; more or less of upper part of occiput, prosternum, prepectus, 

 mesepimeron, and some sutural marldngs on thorax, black; tarsi yel- 

 lowish, their fifth segments brown, the basal 0.6 ± of hind basitarsus 

 more or less fulvous, often the hind tarsus largely or mostly brown- 

 ish ; wings subhyaline, the front wing with pale brown bands about as 

 in L. picta but the bands paler and smaller, as in figure 346, the pre- 

 median brown band faint and covering only the nervulus; apex of 

 hind wing weakly infuscate. 



Female: Front wing 6.5 to 8.0 mm. long; hypostomal carina distad 

 of occipital carina moderately high, about 0.65 as long as basal width 

 of mandible, its apex weakly projecting beyond lower articulation of 

 mandible; epomia about 0.28 as long as height of pronotum; front 

 edge of pronotum with a weak curve at its lower 0.35; mesoscutum 

 weakly mat, its punctures fine, sharp, separated by about 0.3 their 

 diameter; notaulus very weak anteriorly, sharper medially, extending 

 about 0.33 the distance to scutellum; apical transverse carina of pro- 

 podeum sharp, obsolescent or absent laterally and medially, sublater- 

 ally strengthened to make a moderately strong crest; second tergite 

 strongly mat, with fine, adjacent punctures; ovipositor tip as in figure 

 329,d. 



Fulvous. Flagellum brown, darker apically, with an indistinct me- 

 dian band of yellowish fulvous that covers 4 to 5 segments ; sometimes 



