ICHNEUMON-FLIES, PART 2\ EPHIALTINAE 71 



This species has not previously been recorded from North America. 

 Nearctic specimens have been compared with European examples of 

 nucum (the latter supplied through the kindness of Mr. J. F. Perkins) 

 and no significant differences have been found. The Nearctic ma- 

 terial shows a small amount of variation, especially in color, and the 

 specimens from Alaska agree a little more closely with the European 

 specimens of nucum than do the specimens from eastern Canada. 

 The two species that nucum most closely resembles are the Nearctic 

 tecumseh and the Palearctic buolianae. It is distinguished from both 

 species in the male by the coriaceous excision of the front femur and 

 in the female by the translucent, pale brownish stigma. 



Host: Specimens from Blomidon, N. S., were reared from Spilonota 

 ocellana (Denis and Schiffermuller) . 



16. Scambus (Scambus) bispae (Harris) 



Figures 310,k; 312,h; 321,b 



Ichneumon hispae Harris, 1835, Boston Journ. Nat. Hist., vol. 1, p. 149; 9 • 



Type: 9, Massachusetts (Cambridge). 

 Pimpla indagatrix Cresson, 1870, Trans. Amer. Ent. Soc, vol. 3, p. 146; d". 



Type: d\ Illinois (Philadelphia). 

 Pimpla minuta Weed, 1887, Bull. Illinois State Lab. Nat. Hist., No. 3, p. 41; 



d". Type: d\ Urbana, Illinois (Urbana). 

 Pimpla gossypii Ashmead, 1890, Proc. U. S. Nat. Mus., vol. 12, p. 445; 9 • Type: 



9 , Selma, Alabama (Washington). 



Male: Front wing 3.5 to 5.5 mm. long; antenna with 21 to 23 

 segments; temple moderately rounded and rather strongly receding; 

 thorax and propodeum rather stout, the latter usually with distinct, 

 dorsomedial carinae extending a little beyond middle; front femur 

 rather stout and entire except for a very weak preapical excision be- 

 neath; front tibia very weakly, rather evenly bent; abdomen moder- 

 ately stout, tergite 1 slightly longer than broad, rugose on sides and 

 at apex ; following tergites except on apices finely and densely punctate, 

 the punctures often confused with fine, rugose sculpture. 



Black. Scape and pedicel beneath, palpi, tegula, and hind angle 

 of pronotum pale yellowish to whitish; front and middle legs and hind 

 trochanters pale yellowish white; bind coxa and femur reddish, the 

 latter narrowly fuscous at apex; hind tibia with a narrow, weak, often 

 incomplete fuscous annulus near base, and a broader, complete, 

 fuscous annulus at apex; basal 3 segments of hind tarsus whitish with 

 fuscous apices. 



Female: Front wing 4.0 to 7.5 mm. long; antenna with 20 to 24 

 segments; cheek about 0.25 times breadth of base of mandible; temple 

 moderately rounded and rather strongly receding; thorax moderately 

 stout; propodeum rather short and usually with short and weak to 

 indistinct dorsomedial carinae; basal segment of hind tarsus distinctly 



