366 U- S. NATIONAL MUSEUM BULLETIN 216 parts 



15. Trychosis subgracilis (Cresson) 



Figure 395 



Cryptus subgracilis Cresson, 1864, Proc. Ent. Soc. Philadelphia, vol. 3, p. 303; 



9. Type: 9 , Illinois (Philadelphia) . 

 Cryptus rufoannulatus Provancher, 1874, Naturaliste Canadian, vol. 6, p. 177, 



202; cf, 9. Lectotype: 9 , Quebec (Quebec). 



Front wing 3.2 to 7.0 mm. long; clypeus rather small, strongly con- 

 vex, its lower half rather abruptly declivous to the apical margin, the 

 apical margin rather strongly arcuate; temple flat to weakly convex; 

 cheek long, its punctures moderately large and moderately strong, 

 separated by about 0.4 their diameter; lateral portion of occipital 

 carina raised as a low lamella that ventrally is about 0.5 to 0.8 as high 

 as width of third segment of maxillary palpus; second flagellar seg- 

 ment of male about 2.3 as long as wide, of female about 4.0 as long as 

 wide; thorax moderately long; horizontal part of epomia very strong, 

 its vertical portion weak or obsolescent; notaulus absent; punctures 

 on mesopleurum very coarse and strong, separated by about 0.4 their 

 diameter; propodeum of moderate length, its apical carina forming 

 faint sublateral crests, mesad of the crests sharply curved forward, its 

 median portion lacking; hind femur about 5.7 as long as deep in male, 

 about 6.0 as long as deep in female; sides of areolet parallel; nervulus 

 beyond basal vein by about 0.25 its length; nervellus broken near its 

 middle; petiole of moderate length, with a weak dorsolateral and 

 ventrolateral longitudinal ridge, its lateral face with weak wrinlding; 

 second tergite polished or subpolished, its hair sockets separated by 

 about 0.65 the length of the hairs; ovipositor normal for the genus. 



Male: Black. Maxillary palpus with first segment and basal half 

 of second dark bro\NTi, apical half of second and all of third and fourth 

 segments yellowish white, and last segment light or medium brown; 

 labial palpus dark brown; tegula blackish brown; front femur pale 

 brown, dark brown basally and behind; middle femur dark brown, its 

 apex and a stripe in front pale brown; front tibia fulvous to medium 

 brown, white above; middle tibia light to dark brown, white above; 

 front and middle tarsi brownish fulvous, more or less of their upper 

 sides yellowish white, their fifth segments brown ; hind tarsus blackish 

 brown, the third and fourth segments often partly or entirely pale 

 brown or whitish; apical half or less of second segment of hind tarsus 

 sometimes whitish; wings with a fuscous tinge; abdomen entirely 

 ferruginous. 



Female : Black, sometimes the black with a ferruginous tinge. Fla- 

 gellum blackish brown, paler below; palpi and tegula blackish brown; 

 front femur pale brown, dark brown basally and behind; middle femur 

 dark brown, its apex and the apical part of front side pale brown; front 

 and middle tibiae and tarsi pale brown to medium brown; hind tarsus 



