ICHNEUMON-FLIES, PART 2\ EPHIALTINAE 333 



This species occurs in the Transition and Canadian zones, from the 

 Atlantic to the Rocky Mountains, but in the East it has not been 

 found south of northern Pennsylvania. There are a few records from 

 west of the Rocky Mountains in southern Canada. It is very 

 common from New England to Minnesota. 



8. Coccygomimus varians, new species 



Front wing of male 3.5 to 7.2 mm. long, of female 4.0 to 7.5 mm. 

 long; temple short, its profile in a medium-sized female about 0.58 

 as long as eye in profile; cheek moderately long, in a medium-sized 

 female about 1.07 as long as basal width of mandible; mesopleurum 

 with fine, weak, distant punctures, sometimes also with fine, weak 

 wrinkles near attachment of middle coxa; metapleurum with fine 

 oblique wrinkles and finely punctate; hairs on metapleurum mod- 

 erately sparse, evenly distributed. 



Black. Hairs of head and thorax light gray; palpi fuscous or 

 black; tegula varying from entirely white to entirely black, in the 

 male usually whitish basally with the rest brownish or blackish, in 

 the female brownish or blackish, its base sometimes whitish; legs 

 fulvous, the front coxa fuscous or fuscoferruginous, front and middle 

 tarsi a little darkened apically, hind tarsus brown to blackish, and 

 hind tibia variable. Often in smaller males the middle and hind 

 coxae are more or less infuscate or black. Usually the hind tibia is 

 fuscoferruginous, with an indistinct subbasal pale band. When the 

 tibia is darker in color the pale band is more distinct, and when paler 

 it is usually less distinct. Sometimes, especially in larger specimens, 

 the hind tibia is almost uniformly fulvous with the apex and usually 

 the base somewhat infuscate. Wings hyaline or subhyaline. 



A specimen with the hind tibia almost uniformly fulvous looks 

 much like Coccygomimus sanguinipes, and the finer and weaker 

 sculpture on the mesopleurum and metapleurum must be used for 

 distinguishing it. Larger males of this species and smaller males of 

 C. sanguinipes are sometimes so nearly alike in both color and sculp- 

 ture that certain distinction is not possible. In females, however, 

 the difference in pleural sculpture is more definite and females can 

 nearly always be distinguished. 



The range of this species partially overlaps those of C. tenuicornis, 

 C. stricklandi, and C. hesperus. It is relatively easy to distinguish 

 from C. tenuicornis by the lack of fuscous at the apex of the hind 

 femur and usually with a pale area at the base of the tegula. Females 

 can be distinguished from those of C. hesperus and C. stricklandi on 

 epipleural characters, but in males the differences in the epipleura 

 are sometimes so subtle that many cannot be distinguished with 

 certainty. The coloration of the tegula (as described in the key) is 



