ART. 23 EEVISION OF MACKOCENTRUS MUESEBECK 45 



long as mediella ; upper abscissa of basella interstitial with trans- 

 verse abscissa of subcostella; radiella sinuate though less strongly 

 than in cerasivoranae. 



Abdomen usually rather stout; first and second tergites strongly 

 longitudinally striate ; the third sometimes more delicately so, and the 

 sculpture restricted to basal half or two-thirds ; first tergite impressed 

 at base, the spiracles before end of basal fourth and farther from each 

 other than from base of tergite ; ovipositor sheaths fully as long as 

 the body. 



Ferruginous, varied with black; vertex and more or less of occiput 

 usually blackish; face varying from entirely ferruginous or testa- 

 ceous to black ; thorax also varying from entirely testaceous to mostly 

 black, usually at least the sutures of mesonotum, the metanotum, and 

 the propodeum blackish ; legs testaceous or ferruginous, tarsi usually 

 more or less fuscous ; wings subhyaline, stigma usually brown, pale at 

 base; abdomen testaceous or ferruginous, the tergites beyond the third 

 most frequently black. 



In addition to the type the national collection has specimens rep- 

 resenting a range in distribution from Massachusetts and eastern 

 Canada to Missouri and Kansas. Hosts recorded are Epiblema 

 otiosana Clemens, E. scudderiana Clemens, and E. strenuana Walker. 

 I have also seen two collected specimens from Massachusetts in the 

 collection of the Boston Society of Natural History, and one from 

 New York in the Philadelphia Academy of Natural Sciences. 



32. MACROCENTRUS CERASFVORANAE Viercck 



Macrocentrus cerasivoranae Viereck, Proc. U. S. Nat. Mus., vol. 42, p. 623, 1912. 



Type. — In the United States National Museum. 



Easily distinguished except from occasional specimens of pallisferi, 

 and the longer antennae and palpi, the color characters mentioned 

 in the key, the usually more strongly receding temples and cheeks, 

 and the usually relatively shorter ocell-ocular line, will separate it 

 from that species. 



Length usually 7 to 9 mm. Head but little wider than thorax; 

 face shining, but usually punctate; clypeus large, long, not distinctly 

 twice as broad as long; eyes prominent, large; ocell-ocular line 

 usually distinctly less than one and one-half times diameter of a 

 lateral ocellus. Prescutum usually more prominently elevated than in 

 pallisterl; lower part of mesopleura depressed and closely punctate; 

 metapleura punctate, confluently so posteriorly; posterior coxae 

 usually finely transversely aciculate or lineolate; first cubital cell 

 about as long as first discoidal ; second abscissa of cubitus distinctly 

 more, usually much more, than half as long as recurrent vein ; radius 



