Vol. XI] COLE AND LOVETT—LIST OF OREGON DIPTERA 285 



530. Sphaerophoria melanosa Will. 

 Common, but not as abundant as cylindrica. 



531. Sphaerophoria micrura O. S. 

 Mt. Jefferson, VII (Bridwell); Corvallis, IX (Lovett). 



532. Sphaerophoria sulphuripes (Thorns.) 

 Common. 



533. Sphegina infuscata Loew 



Corvallis, IV-28 and Hood River, V-20 to VI-2 (Cole) ; 

 Tillamook, 111-26 (Burrill). 



534. Sphegina lobata Loew 

 Oregon is type locality. 



535. Sphegina punctata Cole, new species 



General color yellowish, the hind femora with a broad 

 dark band and the tip of the abdomen more or less blackish. 

 Apical margin of the wing infuscated; a dark spot outside 

 the anterior cross vein. 



Male: Frons blackish gray, gray pollinose except for a 

 narrow line, and yellowish at the base of the antennae ; 

 rather long and narrow, of about equal width, widening a 

 little from the ocelli back to the occiput; antennae pale 

 brownish yellow; the arista pale brown or yellow; cheeks 

 and palpi yellow, the occiput blackish, gray pollinose. 



Thorax, pleura, and scutellum orange-yellow, the color 

 varied a little; thorax often reddish; thorax and pleura with 

 short, yellow pile. Halteres pale yellow. Abdomen yel- 

 lowish marked with blackish, the first segment short, second 

 long and slender, third and fourth broader; a dark spot on 

 the posterior margin of second segment, the third and fourth 

 darkened above and below. Genitalia blackish, marked with 

 yellow, gray pollinose. The first abdominal segment may be 

 brown and all of the fourth blackish. 



Legs yellow, the front two pairs with the last two tarsal 

 joints dark brown; hind femora with a broad, blackish brown 

 ring; tibiae with two dark rings, one near the apex and a 



