220 U, S. NATIONAL MUSEUM BULLETIN 2 1 6 paiit 3 



transverse carina of propodeum rather strong. These are easily rec- 

 ognized as related to one another, but some others with shorter or 

 more curved epomia, simpl}^ arched second recurrent vein, and often 

 different!}^ shaped areolets or with basal carina of propodeum weak, 

 show more or less relationship with the Laborator group and add 

 heterogeneity to the concept of the Albitarsis group. Narrower and 

 more exact limits to the Albitarsis group, however, do not seem 

 feasible at this time. Most of the species are in the Holarctic region 

 and in southern South America. The Ethiopian Cryptus madecassus 

 Seyi'ig, 1952, and Cryptus suturalis Szepligeti, 1916, also belong here. 

 Trachysphyrus madecassus (Seyrig) and T. suturalis (Szepligeti) are 

 new combinations. 



The more typical members of this group (as albitarsis and persim- 

 Uis) occur in meadows with scattered bushes or in more or less open 

 woods, the females spending much time searchmg for hosts at the 

 soil surface. 



18. Trachysphyrus luctuosus (Cresson) 



Front wing 7.3 to 11.0 mm. long; frons moderately concave, its 

 lower 0.3 usually transversely Avi'inkled, the rest ruguloso-punctate, 

 the rugulosity usually with a transverse direction or bias; temple 

 moderately wide; first segment of female flagellum 0.34 to 0.50 as 

 long as wide; mesopleurum weakly mat, its punctures sharp, close, 

 or crowded, medially the punctures obscured by rugulosity; transverse 

 carinae of propodeum moderately strong, in females the basal carina 

 often weak or obsolescent, in males the apical carina often weak or 

 obsolescent; apical carina of propodeum forming a weak sublateral 

 crest; propodeal spiracle about 1.3 as long as wide; ramellus very 

 short, sometimes absent; second recurrent vein with a simple curve; 

 areolet moderately large, rather regularly pentagonal, its sides 

 moderately convergent and its front side only moderately narrowed; 

 hair sockets on tergite 2 separated by about 1.5 the length of the 

 hairs; ovipositor sheath about 0.38 as long as front wing; ovipositor 

 tip exceptionally short, about 2.8 as long from nodus to apex as 

 it is deep at nodus, the dorsal edge rather sharp just basad of nodus. 



This species is Holarctic, with three subspecies as keyed and 

 described below: 



1. Hind femur black; apical carina of propodeum almost entirely lacking; lower 



0.3 of frons not wrinkled; range: Japan. 



18c. luctuosus atrifemur, new subspecies 



Hind femur ferruginous or fulvous; apical carina of propodeum strong, 



moderately strong, or obsolescent; lower 0.3 of frons usually with transverse 



wrinkles 2 



2. Wings subhyaline; hind femur fulvous; first segment of female flagellum 



about 3.8 as long as wide; range: Europe. 



18a. luctuosus subquadratus (Thomson) 



