260 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 part 3 



ovipositor rather than a longer upcurved one, axillus vein closer to 

 anal margin of hind wing, front side of areolet narrower, and some less 

 tangible characters in the head and thorax. The species parasitize 

 hosts in rather dense cocoons on bushes or trees, in desert or dry 

 places. The hosts of Compsocryptus are unknown, but are probably of 

 a different kind, perhaps in the ground. It seems that the general 

 resemblance of Lanugo to Compsocryptus is due partly to convergence. 

 The genus is best represented in Mexico. Some species occur as 

 far south as Ecuador and a number are found in southwestern United 

 States. A few are in the Southeast. One species (brunnipennis) 

 ranges northward to British Columbia. The extralimital species which 

 have been described are: Cryptus fraternans Cameron 1885 (Mexico), 

 and C. hebetis Cameron 1885 (Mexico to Panama). Hemiteles ruji- 

 cornis Cameron 1886 (name preoccupied), which was renamed H. 

 rufiantennaius by Dalla Torre in 1902, is the male of hebetis (new 

 synonymy). 



Keys to the Nearctic species of Lanugo 



MALES 



(Males of schlingeri, cestus, longurius, hicincta, and polita are unknown.) 



1. Body and legs entirely black; wings yellow with only the apical margin fuscous 



(fig. 351) 10. flavipennis, new species 



Body and legs largely or entirely fulvous or ferruginous; wings colored other- 

 wise 2 



2. Wings dark brown, not distinctly banded 3 



Wings hyaline to yellow, with more or less distinct brown or fuscous bands . 4 



3. Third tergite ferruginous with its basal 0.3 ± blackish; front margin of pro- 



notum with a moderately strong curvature at its lower 0.35. 



4. retentor (Brulle) 



Third tergite entirely ferruginous; front margin of pronotum with a small 



angulate projection at its lower 0.35 . . . 13. brunnipennis, new species 



4. Front edge of pronotum with at most a moderately strong curve at its lower 



0.35; front wing subhyaline, with weak or rather strong brown or fuscous 



bands (figs. 342, 344, and 346) 5 



Front edge of pronotum with a small angulate projection at its lower 0.35, 

 the angle about 85° to 120°; front wing yellow with rather strong brown 

 bands (figs. 352 and 354) 7 



5. Third tergite ferruginous with its basal 0.3 ± blackish; punctures on thorax 



a little finer and denser 3. ferrugata, new species 



Third tergite entirely fulvous, its base not blackish; punctures on thorax a 

 little coarser and sparser 6 



6. Brownish cloud over nervulus extending on to hind end of basal vein (fig. 344) ; 



basal 0.28 ± of hind basitarsus fulvous; median whitish band on flagellum 



distinct and sharply defined 5. picta, new species 



Brownish cloud over nervulus not extending on to hind end of basal vein 

 (fig. 346); basal 0.6 ± of hind basitarsus fulvous; median pale band on 

 flagellum often indistinct, sometimes lacking ... 6. deserti, new species 



