ICHKEUMON-FLIES — GELINAE : MESOSTENINI 219 



and apical 0.8 ± of segment 5 of hind tarsus brownish fulvous, the 

 rest of hind tarsus yellowish white; wings Avith a brown tinge. 



Female: Fulvous. Flagellum, center of occiput, and sutural mark- 

 ings on thorax black, the flagellum more or less fulv^ous basalh''; wings 

 medium brown. 



Specimens (32 d^, 159): From British Columbia (Adams Lake and 

 Vernon) ; California (Alamo, Berkeley, Bigpine Creek in Inyo Co. at 

 4,500 ft., Camino, Coffee Creek in Trinity Co., Davis, Los Altos, 

 Mount Diablo, Redwood City, Sacramento, San Francisco, Santa 

 Cruz Mts., Snowline Camp in El Dorado Co., Stanford University, 

 Tanbark Flat in Los Angeles Co., and Wood Lake in Tulare Co.); 

 Idaho (Lewiston and Sandpoint); Oregon (Corvallis and Siskiyou 

 Pass in Jackson Co. at 4,500 ft.) ; and Washington (Paradise Valley 

 on Mount Rainier). 



Collection dates are mostly from April 16 to June 30. Those out- 

 side of tliis range are: "March" at Davis, Calif.; April 5 at Redwood 

 City, Calif.; April 8 at Wood Lake, Tulare Co., Cahf. ; July 3 at Snow- 

 line Camp, El Dorado Co., Calif.; July 15 at Siskiyou Pass, 4,500 ft., 

 Jackson Co., Oreg.; July 17 at Vernon, B.C., and at Paradise Valley, 

 Mount Rainier, Wash.; and September 15 at Davis, Calif. 



This species ranges from British Columbia to southern California, 

 in the Transition zone. 



IV. ALBITARSIS GROUP 



Hairs on head, thorax, and coxae usually short but in T. arcticus 

 long and erect; temple smooth, with distmct punctures; frons rather 

 weakly to rather strongly concave, without even a trace of a pit dorso- 

 laterad of each antennal socket, its lower 0.3 ± usually smooth or 

 transversely wrinkled, the rest punctate, rugulose, wrinkled, or punc- 

 tatorugulose, the wrmkling or rugulosity usually with a transverse 

 direction or bias; epomia usually long, straight, and strong (absent in 

 arcticus); basal transverse carina of propodeum usually strong; front 

 tarsus of female not widened; areolet pentagonal, its sides about 

 equal, usually strongly convergent so that front side of areolet is very 

 short, the areolet usually much higher than wide; second recurrent 

 vein usually rather long, usually more or less sinuate but often simply 

 arched; axillus vein parallel to or convergent toward inner hind mar- 

 gin of hind wing; ovipositor usually rather long, its tip sagittate. 

 The propodeal spiracle is usually elongate but in T. luctuosus, T. 

 moschator, and some related Palearctic species it is rather broadly 

 elliptic. 



This is the largest group of the genus and the most diverse. Some 

 of the very common species have the areolet strongly narrowed above, 

 second recurrent vein sinuate, epomia long and straight, and basal 



