18 U. S. NATIONAL MUSEUM BULLETIN 216 



Chelsea) ; Saskatchewan (Prince Albert National Park and Waskesiu) ; 

 Virginia (Falls Church) ; Washington (Lake Cushman in Mason Co.) ; 

 West Virginia (Cheat Mt.) ; and Wisconsin (Madison and Polk Co.). 



Collecting dates are from early spring to early summer, with the 

 males appearing and disappearing about ten days before the females. 

 Some of the early and late dates for males are April 16 at Mastyard, 

 N. H.; April 18 in Midland Co., Mich.; April 19 at Falls Church, 

 Va.; April 22 at Ottawa, Ont.; April 24 at Chelsea, Que., and at 

 Syracuse, N. Y.; April 25 at Niagara Falls, N. Y.; June 6 at Ithaca. 

 N. Y. ; June 7 at Kazubazua, Que.; June 8 at Waskesiu, Sask.; June 

 10 at Constance Bay, Ont.; and June 13 at Taughannock Falls, 

 N. Y. and at Thunder Bay Beach, Ont. 



Some early and late dates for females are: April 29 at Farmingdale, 

 N. Y.; May 4 in Midland Co., Mich.; May 8 at Merivale, Ont.; May 

 14 at Old Chelsea, Que.; May 22 at Laniel, Que.; June 20 at Gull 

 Lake in Charlevoix Co., Mich.; June 23 at Alexandria, Minn., and 

 at Mount Madison, N. H.; July 4 at Laniel, Que.; July 23 at Gold 

 Lake in Sierra Co., Calif.; and July 25 at 7,500 to 9,700 ft. in Sequoia 

 National Park, Calif. 



We have several times collected males very early in spring (late 

 April and early May) in central New York State, flying less than 5 

 centimeters above the dead leaves of mixed forests on sunny after- 

 noons. In this area, they are among the very first ichneumonids to 

 appear in spring. 



As hosts, the subspecies has been reared from Choristoneura fumi- 

 ferana at Algonquin Park, Ont., by Bradley; from a geometrid at 

 Kettle Forest, B. C; and again from a geometrid without locality 

 data. Males were collected "feeding at sap" and "at maple sap" at 

 Old Chelsea, Que., by G. S. Walley on Apr. 26, 1935, and Apr. 30, 

 1937, and at Mastyard, N. H., on Apr. 16, 1896, by W. F. Fisk. One 

 female specimen is labeled "beaten from fir" and another female is 

 labeled "Norway spruce." According to these data, the subspecies 

 seems to parasitize small Lepidoptera attacking conifers. 



This subspecies is characteristic of the Alleghenian fauna, but 

 occurs also westward to British Columbia, Washington, and California. 



lc. Chorinaeus longicalcar talaris, new subspecies 



Metapleurum with hairs near its coxal socket and in a broad band 

 along pleural carina, extending from apex to a little forward of pro- 

 podeal spiracle. 



Male: Black. Face, lower lateral part of frons, front part of 

 cheek, clypeus, mouth parts, scape and pedicel in front, tegula, 

 front and middle legs, and hind leg beyond femur, yellow; front 



