ICHNEUMON-FLIES, PART 2 : EPHIALTINAE 



77 



valve as in the subgenus Scambus. Thorax red with a few conspicuous 

 black markings. 



The subgenus shows a remarkable convergence with Lissoscambus 

 in several structural features and in color. 



This is a Neotropic subgenus, except for hirticauda, which is found 

 in the western Nearctic. The described Neotropic species that belong 

 in this subgenus are (according to information supplied by H. K. 

 Townes, who has recently studied their types) : Pimpla albipes Cres- 

 son, 1874; Pimpla coxata Smith, 1879; Epiurus albitibia Morley, 1914; 

 Epiurus jlavipes Cameron, 1904; and Ephialtes nigriceps BrullS, 1846. 

 These are all new combinations with the generic and subgeneric names, 

 except that albipes has already been referred to the genus Scambus. 



Figures 28, 29. — Localities: 28 (left), Scambus (Scambus) decorus; 29 (right), 

 S. (Erythroscambus) hirticauda. 



1. Scambus (Erythroscambus) hirticauda (Provancher), new combination 



Figures 312,k; 321, c 



Pimpla hirticauda Provancher, 1886, Additions et corrections au volume II de 



la faune entomologique du Canada traitent des hymSnopteres, p. 116; 9- 



Type: 9 , [probably from Victoria, B. C] (Quebec). 

 Scambus hirticauda (Provancher), Townes, 1944, Mem. Amer. Ent. Soc, No. 11, 



p. 25. 

 Scambus hirticauda (Provancher), Townes, 1951, U. S. Dep. Agr., Agr. Monog., 



No. 2, p. 186. 



Male: Front wing 4.0 to 5.0 mm. long; antenna with 25 to 26 

 segments; cheek about 0.28 times breadth of base of mandible; 

 temple rather strongly rounded and strongly receding; face with 

 rather dense, coarse pubescence; thorax, especially above, polished 

 and with only traces of a few weak punctures; propodeum with a 



