ICHNEUMON-FLIES OF AMERICA: 1. METOPIFNAE 



69 



Creek, Sierra Ancha, Ariz., 

 flying around various shrubs 

 little more frequent around 

 On the wing this Metopius 

 Eumenes (Vespidae) which 



The specimens collected at Workman 

 were taken between 9:00 and 11 :00 a. m., 

 and trees. The females, at least, were a 

 oak, which was leafing out at that time, 

 looked almost exactly like a species of 

 was also common at that time and place. 



This species has been taken in the Upper Sonoran fauna of Arizona 

 in spring. 



3. Metopius (Metopius) krombeini, new species 



Front wing 6 to 8 mm. long; punctures on facial shield rather small, 

 strong, of irregular size, their interspaces about 0.5 their diameter; 

 punctures on mesopleurum and on metapleurum coarse, very strong, 

 subadjacent; first tergite about 0.70 as long as wide, in profile very 

 strongly rounded above, about 1.4 as long as high; third tergite about 

 0.75 as long as wide; apicolateral angles of second tergite a little acute, 

 stronger than in other Nearctic species of the subgenus; seventh ter- 

 gite of male and sixth tergite of female with a blunt median apical angle 

 that is strongly raised. 



Figures 42-44. — Localities, species of Metopius (Metopius): 42 (left), mimicus; 43 (center), 

 krombeini epixanthus; 44 (right), krombeini krombeini. 



This is the smallest Nearctic species of the subgenus and is further 

 distinguished by the short abdomen, with coarse, strong punctation. 

 There are two subspecies, as described below: 



1. Apical 0.6 to 0.85 of fourth and fifth tergites yellow (fig. 183,e); range: Texas, 



Colorado, and Arizona .... 3a. krombeini epixanthus, new subspecies 



Apical 0.2 to 0.3 of fourth and fifth tergites yellow (fig. 183,f); range: Alle- 



ghenian and Carolinian faunas . . 3b. krombeini krombeini, new subspecies 



