104 



TL S. NATIONAL MUSEUM BULLETIN 216 



Townes (Townes). <?, Marin Co., Calif., Aug. 3, 1929, P. W. Oman 

 (Lawrence). 3 c?, near Estes Park, Colo., June 12 and 13, 1948, 

 H., M., G., D., and J. Townes (Townes). <?, Manitou, 6,629 ft., 

 Colo., July, E. S. Tucker (Washington). cT, Henry Co., Iowa, May 

 10, 1945, Holmes Foster (Ottawa). 



In addition to the male types we have a number of females that 

 probably belong to this species, but these cannot be determined with 

 certainty. 



This species ranges from British Columbia and California eastward 

 to Iowa. 



2. Pimpla macro. (Cresson) 



Figures 329,h; 341 



Ephialtes macer Cresson, 1868, Canadian Ent., vol. 1, p. 35; ?. Lectotype: 9, 

 Ontario (Philadelphia). 



Male: Front wing 3.7 to 5.7 mm. long; hairs on lower half of temple 

 suberect, about 1.0 as long as labial palpus; hairs on combined costa 

 and subcosta mostly suberect, most of them about 0.8 as long as the 

 stigma is wide; nervellus broken near its upper 0.45; submetapleural 

 carina complete, or its apical 0.3 ± obsolescent; first tergite about 1.9 

 as long as wide; clasper tapered apically to a rounded point. 



Colored like the male of Pimpla decumbens. 



Figure 43. — Localities for 

 Pimpla macra. 



Female: Front wing 6.0 to 8.0 mm. long; clypeus about 2.2 as wide 

 as long; nervellus broken near its upper 0.45; first tergite about 1.3 

 as long as wide; ovipositor sheath about 3.0 as long as front wing; 

 dorsal part of basal three teeth of ovipositor tip turned a little forward. 

 These characters are not constant enough for reliably distinguishing 

 females of this species from those of P. decumbens. 



Colored like the female of Pimpla decumbens. 



The type of Ephialtes macer is a female, and though it probably 

 belongs to the species described above it may turn out to be a female 



