ICHNEUMON-FLIES — GELINAE : MESOSTENINI 369 



This species is close to T. refiexa and shows some tendency to inter- 

 grade with it. It may be only subspecifically distinct. 



Type: 9, Corvallis, Oreg., July 7, 1925, H. A. Scullen (Washington, 

 USNM 63811). 



Paratypes (19 cf, 409) : From British Columbia (Nanaimo Biological 

 Station, Osoyoos, Steelhead, and Waldies Road near Robson at 2,000 

 to 3,200 ft.); Cahfornia (Big Pine Creek in Inyo Co. at 7,500 ft., 

 Bridge Creek Camp in Lassen Co., Lake Henshaw in San Diego Co., 

 Palo Alto, Potwisha in Sequoia National Park at 2,000 to 3 ,000 ft., 4 miles 

 west of Quincy, San Gabriel Canyon, Susan River Camp in Lassen Co., 

 Silver Lake in Mono Co., Tioga Pass, Walker Pass in Kern Co., and 

 Woodlake) ; Idaho (Moscow at 2,560 ft.) ; Oregon (Coburg, Corvallis, 

 Hart Mt. at 6,500 ft.. Mount Angel, North Powder Lakes, Salem, 

 Talent, and 5 miles south of The Dalles) ; Utah (Wellsville Mts. in 

 Cache Co.); Washington (Carters Point on San Juan Island, "Cran- 

 berry Station," Ilwaco, and San Juan Island) ; and Wyoming (Lower 

 Falls at Continental Divide in Yellowstone Park). 



Most collection dates are in June, July, and the first half of August. 

 Records outside of this range are: March 15 at Woodlake, Tulare Co., 

 Calif. ; March 25 at Palo Alto, Calif. ; March 30 in San Gabriel Canyon, 

 Calif.; April 10 at Lake Henshaw, San Diego Co., Calif.; April 26 at 

 Walker Pass, Kern Co., Calif.; May 3, 14, and 16 at Corvallis, Oreg.; 

 May 25 at Potwisha, 2,000 to 3,000 ft.. Sequoia National Park, Calif.; 

 August 16 at Silver Lake, Mono Co., Cahf.; August 20 at North 

 Powder Lakes, Oreg. ; and August 23 and September 22 on San Juan 

 Island, Wash. 



Five different collections are labeled as from flowers of Daucus, 

 three of them on D. pusillus and two on D. carota. 



This species occurs from southern British Columbia to southern 

 California and eastward to Yellowstone Park, Wyoming. 



17. Trychosis atrorubens, new species 



Figure 397 



Front wing 5.2 to 8.0 mm. long; clypeus rather small, strongly 

 convex, its apical margin strongly arcuate; cheek long, mat, its punc- 

 tures of moderate size, rather weak, separated by about 0.7 their 

 diameter and somewhat obscured by horizontal Aviinkling; temple at 

 its upper 0.3 faintly convex or flat; lateral and ventral portions of 

 occipital carina raised as a lamella, the lamella ventrally about 1.7 as 

 high as width of third segment of maxilla ; second segment of flagellum 

 about 2.4 as long as wide in male, about 3.1 as long as wide in female; 

 horizontal portion of epomia moderately strong, laterally bent ventrad 

 but the vertical portion absent or very weak; notaulus absent; 

 punctures on mesopleurum moderately coarse, separated by about 0.3 



