480 U. S. NATIONAL MUSEUM BULLETIN 216 



19. Odontocolon dreisbachi, new species 



Male: Unknown. 



Female: Front wing 8.0 mm. long; flagellum with 36 segments, its 

 first segment about 1.35 as long as second; head about 0.97 as wide 

 across temples as across eyes; punctures on temple small, separated 

 by about 3.0 their diameter; thorax about 2.27 as long as high; upper 

 0.3 ± of pronotum with fine punctures that are separated by about 

 3.5 their diameter; trough of pronotum smooth except for a few short 

 transverse ridges near epomia and some very faint short ridges in 

 trough below epomia ; mesoscutal punctures very small, separated by 

 about 5 times their diameter; mesepimeron with hairs on its upper 

 0.8±, sparser below; metapleurum irregularly rugosopunctate, more 

 strongly so posteriorly; petiolar area about 0.57 as long as combined 

 areola and basal area; propodeal teeth about 0.65 as long as their 

 basal width; hairs in first lateral area sparse, their sockets separated 

 by about 1.2 the length of the hairs; hind femur about 1.97 as long 

 as deep, the punctures on its upper half rather small, weak, and 

 dense, on its lower half very sparse, separated by about 5 times their 

 diameter; second segment of middle leg about 1.75 as long as deep; 

 fifth segment of hind tarsus about 1.45 as long as second segment; 

 second tergite polished, a little rugulose at base, its punctures very 

 small, separated by about 3 times the length of the hairs; ovipositor 

 sheath about 1.35 as long as front wing. 



Black, including appendages and abdomen, except that front and 

 middle legs and base of hind femur may be blackish brown rather than 

 black. Wings weakly infuscate. 



Type: 9, Isle Royale, Mich., Aug. 3 to 7, 1937, R. E. Dreisbach 

 (Washington, USNM 63728). 



Paratype: 9, same data as type (Dreisbach). 



20. Odontocolon albotibiale (Bradley) 



Odontomerus albotibialis Bradley, 1918, Bull. Brooklyn Ent. Soc, vol. 13, p. 103; 



9 . Type: 9 , Chicoree Woods, Ithaca, N. Y. (Ithaca). 

 Odontomerus striatus Cushman, 1930, Proc. U. S. Nat. Mus., vol. 77, art. 3, p. 14; 



9. Name preoccupied. Type: 9, Lyme, Conn. (Washington). 

 Odontocolon aciculatus Cushman, 1942, Proc. Ent. Soc. Washington, vol. 44, p. 182. 



New name for O. striatus. 



Male: Front wing 3.5 to 7.6 mm. long; first flagellar segment about 

 1.22 as long as second; punctures on mesoscutum small, weak, sepa- 

 rated by about 2.5 their diameter; propodeal teeth about 0.8 as long 

 as their basal width; punctures on hind femur rather small and weak, 

 moderately dense, much sparser on the lower half, on the lower 0.3 ± 

 of femur separated by about five times their diameter; second seg- 

 ment of middle tarsus about 3.3 as long as wide; fifth segment of hind 

 tarsus about 1.11 as long as second segment; nervellus broken usually 



