ART. 16 WASPS OF THE SUBFAMILY BRACONINAE MUESEBECK 21 



6. CRASSOMICRODUS DIVISUS (Cresson) 



Microdus divisus Cresson, Canad. Entom., vol. 5, 1873, p. 52. 

 Orgilus rileyi Askmead, Proc. U. S. Nat. Mus., vol. 11, 1889 (1888), p. 640. 

 Epirnicrodus diversus Ashmead, (sic!) Proc. U. S. Nat. Mus., vol. 23, 1900, p. 129. 

 Crassomicrodus divisus Bradley, Psyche, vol. 23, 1916, pp. 139-140. 



Type. — No. 1726.1, Academy of Natural Sciences, Philadelphia, 

 Pennsylvania. The type of rileyi is in the United States National 

 Museum. 



The types of divisus and rileyi agree perfectl3^, and unquestion- 

 ably are the same species. C. divisus differs from medius, which it 

 closely resembles, as noted in the discussion under that species. The 

 head is usually entirely black; thorax usually mostly black, with the 

 pronotum, propleura, and mesonotum testaceous; anterior and mid- 

 dle legs black or blackish, their tibiae, especially the anterior pair, 

 sometimes mostly pale; posterior coxae usually testaceous, more or 

 less black apically, but varying from entirely black to entirely testa- 

 ceous; posterior trochanters black, their femora reddish, usually 

 somewhat blackish apically; their tibiae and tarsi usually mostly 

 blackish; abdomen reddish testaceous; wings strongly infumated, 

 the hyaline spots bclov/ stigma not so conspicuous as in medius. 

 Cheeks and temples broad, but not bulging strongly; the cheeks, as 

 seen from in front, sloping rather evenly, not much rounded; malar 

 space more than half the eye height in the male and about tlu*ee- 

 fourth as long as the eye height in the female; impression between 

 lateral ocelli shallow, smooth; propleura usually somewhat roughened 

 anteriorly; propodeum slightly rounded, not sloping evenly from base 

 to apex; both spurs of middle tibia much longer than half the 

 basitarsus; inner spur of liind tibiae also considerably' longer than 

 hind basitarsus; last segment of posterior tarsi about as long as the 

 third segment and shorter than the second; radius arising consider- 

 ably beyond the middle of stigma; radial cell measured along wing 

 margin very distinctly longer than half the second abscissa of radius 

 Length usually 7 to 8 mm. 



The above notes are based on the types; on about 25 additional 

 specimens of both sexes in the United States National Museum, which 

 are from various localities in Texas, Colorado, Illinois, Ohio, Michi- 

 gan, Virginia, Louisiana, and Kentucky, and 10 specimens from Illi- 

 nois in the collection of the University of Illinois. 



7. CRASSOMICRODUS NIGRICEPS (Cresson) 



Microdus nigriceps Cresson, Trans. Amer. Ent. Soc, vol. 4, 1872, p. 182. 



Type. — In the United States National Museum. 



The type is a female, although it was originally described as a 

 male, the extremely short ovipositor having been overlooked. It is 

 exceedingly close to divisus and may eventually prove to be that spe- 



