226 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 paut 3 



and July 4, 10, 21, and 28, 1953, and June 30, 1954, P. F. Bruggemann 

 (Ottawa) . 



This species is Ai'ctic and Arctic- Alpine. It has been found in 

 only a few, mdely separated localities. 



21. Trachysphyrus rugosiscutum (Pratt) 



Front wing 6.7 to 11.0 mm. long; body form quite slender; sculpture 

 of head and thorax very dense and strong, the mesoscutum rugulose 

 on margins and along notauU, the notauli not sharp except anteriorly; 

 mesopleurum with dense, strong rugulosity; propodeal crests tooth- 

 like; front side of areolet about 0.65 as long as distal side; second 

 recurrent vein rather long, simply arched or faintly sinuate; tergites 2 

 and 3 strongly mat. 



There are four subspecies, as keyed and described below: 



1. Coxae red; range; California and Oregon. 



21d. rugosiscutum rugosiscutum (Pratt) 

 Coxae black 2 



2. Femora black; range: Canadian zone of Colorado, Arizona, and New Mexico; 



also in Mexico 21c. rugosiscutum flagellatus (Pratt) 



Femora red 3 



3. Basal transverse carina of propodeum about as strong and sharp as apical 



transverse carina; wrinkling on mesopleurum a little coarser; flagellum brown, 

 its fourth and fifth segments not marked with white; range: Mexico. 



21a. rugosiscutum binarius, new subspecies 



Basal transverse carina of propodeum distinctly weaker than apical transverse 



carina; wrinkling on mesopleurum a little finer; flagellum blackish brown, 



its fourth and fifth segments often marked with black; range: Upper and 



Lower Sonoran faunas of Arizona and New Mexico. 



21b. rugosiscutum crassisculptus (Pratt) 



21a. Trachysphyrus rugosiscutum binarius, new subspecies 



Male: Unknown. 



Female: Mesopleurum and metapleurum with strong, irregular, 

 moderately coarse wTinkling; basal transverse carina of propodeum 

 strong and sharp, as sharp as the apical transverse carina and averag- 

 ing a little closer to apical carina than in the other subspecies; median 

 elevation of postpetiole at spiracles rather strong. 



Coloration as in the subspecies crassisculptus except that flagellum 

 is brown, mthout white marking. 



Tjrpe: 9, Distrito Federal, Mexico, June 1 to 10, 1915, R. H. Van 

 Zwaluwenburg (Washington, USNM 63780). 



Paratypes: 9, 14 miles west of Huauchinango, Puebla, Mexico, 

 June 17, 1951, P. D. Hurd (Berkeley). 9, 14 miles west of Huauchi- 

 nango, Puebla, Mexico, June 17, 1951, H. E. Evans (Townes). 29, 

 San Miguel, Hidalgo, Mexico, W. M. Mann (Cambridge and Townes). 



This subspecies occurs in Mexico. 



