72 U. S. NATIONAL MUSEUM BULLETIN 216 



about 1.45 as long as high; third tergite about 0.83 as long as wide; 

 seventh tergite of male and sixth tergite of female with a blunt median 

 apical angle which is moderately raised. 



This is a species of Wyoming, Colorado, New Mexico, and Arizona, 

 with three subspecies differentiated by the amount of ferruginous in 

 the ground color. 



Key to the subspecies of Metopius pulchellus 



1. Thorax ferruginous and yellow, range: Colorado and Wyoming. 



4c. pulchellus pulchellus Cresson 

 Thorax black and yellow, sometimes with a little ferruginous 2 



2. Apical 0.25± of third tergite yellow (fig. 183, g), range: Utah and Arizona. 



4a. pulchellus montanus Cresson 



Apical 0.5 ± of third tergite yellow (fig. 183, h), range: New Mexico and 



Arizona 4b. pulchellus sonora, new subspecie 



4a. Metopius (Metopius) pulchellus montanus Cresson, new status 



Figure 183, g 



Metopius montanus Cresson, 1879, Trans. Amer. Ent. Soc, vol. 7, proc p. xxviii; 

 d\ Type: o 71 , Colorado (Philadelphia). 



Black. Face except for a large (male) or small (female) median 

 vertical elliptical spot, interantennal process, lower lateral part of 

 frons, front of scape, palpi, narrow stripe along upper margin of 

 pronotum (this stripe sometimes ferruginous), subtegular ridge, usu- 

 ally a vertical oval spot beneath front end of subtegular ridge, some- 

 times most of tegula, sometimes small spot on mesopleurum next to 

 middle coxa, usually a large spot on metapleurum, apex and baso- 

 lateral corner of scutellum, postscutellum, spot at apex of second 

 lateral area of propodeum, apex of coxae, trochanters except on under 

 side of front and middle trochanters and base of hind first trochanter, 

 apex and extreme base of femora, more or less of front side of fore and 

 middle femora, upper part of front and middle tibiae, more or less of 

 hind tibia basally, dorsally, and on front side, apical 0.7 of first tergite, 

 lateroapical corner of second tergite, apical 0.2 of third tergite, fourth 

 to seventh tergites except basally, and male genitalia, yellow; antenna 

 reddish brown basally; front and middle legs blackish to fulvous 

 except where described as yellow, beyond their femora only fulvous 

 and yellow ; hind coxa sometimes partly fulvous ; hind tibia and tarsus 

 brown except as described yellow; tegula brown, with or without a 

 yellow spot; wings tinged with brown, the front half of front wing 

 medium brown. 



Specimens: d\ 9, near Alpine, Ariz., May 29, 1947, H. and M. 

 Townes (Townes). <? (type), Colorado (Philadelphia). 9, Logan 

 Canyon, Utah, July 24, 1906 (Ithaca). 



