ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 121 



June 13, 1942, and June 13, 1943, H. and M. Townes (Townes). 

 9, Sanilac Co., Mich., May 30, 1952, R. R. Dreisbach (Dreisbach). 

 49, Ithaca, N. Y., May 23, 1936, and June 2 and 6, 1936, H. Townes 

 (Townes). 9, West Nyack, N. Y., June 5, 1938, A. L. Melander 

 (Cambridge). 29, North Fork of Swannanoa River, Black Mts., 

 N. C, May, N. Banks (Cambridge). 9, Akron, Ohio, May 18, 1941, 

 H. Townes (Townes). 9, Columbus, Ohio, May 19, 1941, G. R. 

 Ferguson (Corvallis). 69, Spring Brook, Pa., May 22 and 25, 1945, 

 and June 8, 12, and 13, 1945, H. Townes (Townes). 9, Dayton, Va., 

 June 13, 1931 (Pittsburgh). 9, June 19, 1895 (Ottawa). 



This species occurs in deciduous woods in the East. Adults have 

 been collected from May 22 to June 19. 



II. PODAGRICUS GROUP 



Punctures on face usually rather fine and distant, their interspaces 

 usually about 0.4 to 0.8 their diameter; costula completely absent; 

 hairs on temple dense to sparse, often with irregular spacing that 

 leaves small glabrous areas medially (fig. 187,1); areolet usually 

 wider than in crassus group, always present; hind spur of hind tibia 

 rather short and stout, together with its fringes about 0.28 to 0.38 as 

 long as wide; last segment of hind tarsus of female with a small, 

 ventral, subapical, tooth or flange on inner side that is surmounted 

 by a hair tuft; hairs on abdominal tergites of male dense to sparse, 

 more or less regularly arranged but the basal tergites glabrous medially 

 and first tergite mostly glabrous; hairs on abdominal tergites of 

 female always sparse, the tergites always glabrous or subglabrous 

 medially but often with numerous hairs laterally, the fourth tergite 

 always with its median third glabrous or with a very few scattered 

 hairs (figs. 186, g,h); apical notch of female subgenital plate strong. 



We have species of this group from Madagascar (including T. 

 traditor Seyrig and T. inimicus Seyrig), Eurasia, Japan, Formosa, 

 South America, and there are the three Nearctic species treated 

 below. 



9. Triclistus chosis, new species 



Figures 186,g; 187,i,l 



Male: Not known with certainty. 



Female: Front wing 5.0 to 6.1 mm. long; face mat, its punctures 

 moderately coarse, their interspaces about 0.4 their diameter; temple 

 flat, its hairs long, rather dense next to eye and occipital carina, 

 elsewhere sparse and scattered; metapleurum with to 7 hairs; median 

 longitudinal carinae of propodeum very wide but not sharp, widely 

 spaced, subparallel but somewhat convergent subbasally; hairs on 

 area of second lateral area of propodeum sparse; median apical area 

 of propodeum about 0.33 as long as wide; hind spur of hind tibia about 



