FLIES OF THE GENUS OGCODES — SCHLINGER 283 



New York: Id", Cold Spring Harbor, June 25, 1930 (C. H. Curran, AMNH); 

 Icf, Bethpage, Long Island, Aug. 1938 (F. S. Blanton, CU). 



New Jersey: 1 9 , Ramsey, July 26, 1944 (W. J. Gertsch, AMNH), reared from 

 A. saUabunda [recorded by Sabrosky, 1948, as 0. pallidipennis]. 



Ontario: Id^, Pancake Bav, Lake Superior, Julv 30, 1948 (W. J. Gertsch, 

 AMNH). 



Oregon: 1 cf, Drews Gap, Klamath Co., July 6, 1950 (H. E. Cott, EIS). 



Quebec: Id", Montreal Island, June 12, 1904 (ALM). 



Washington: Id", Asotin, April 22, 1923 (A. L. Melander, ALM); Id', Zillah, 

 June 23, 1923 (A. L. Melander, ALM); 19, Waldron Island, July 1, 1909 (W. 

 Mann, USNM) [recorded by Sabro.sky, 1948, as western subspecies of pallidi- 

 pennis]. 



Wisconsin: Id', Dane Co., July 17, 1947 (D. C. Drake, EIS); 1 9 , Door Co., 

 July 7, 1950 (C. L. Fluke, UW) ; 19, Milwaukee Co., Aug. 11, 1902 (GEB). 



Seasonal occurrence: From March (California) to Aug. 23 

 (Maryland), but more often encountered from May to July. 



Recorded hosts: Anyphaenella saltahunda Hentz (recorded by 

 Sabrosky, 1948, as host of 0. pallidipennis Loew). 



New host record: Xysticus montanensis Ke^^serling, immature, 

 collected at Putah Canyon, Cahf., Apr. 12, 1949. The parasite (9) 

 emerged from host Apr. 14, pupated Apr. 17, emerged as adult Apr. 

 21, and died Apr. 27, 1949. 



Biology: Unknown except for rearing records cited above. 



Discussion: Sabrosky (1944, 1948) first defined the male of the 

 species and established its limits. On the basis of its wing venation 

 and male genitalia, horealis forms a distinct segment of the subgenus 

 shared only by the European species pallipes. But horealis is easily 

 separable from the latter by its darker coloration and by the distinct 

 fingerlike appendage of the aedeagus (compare pi. 8, fig. 51 and pi. 

 9, fig. 56). 



Some confusion still exists as to the exact identity of this species 

 since the type specimen was a female. Both Sabrosky (1948) and 

 the author have a species concept which includes, among other fea- 

 tures, the following wing venational characteristics: Vein Mi strong, 

 attached basally to stub of r-m crossvein; m-cu crossvein present and 

 distinct; vein M2 long; anal vein and vein Cu2 join before wing mar- 

 gin (see pi. 3, fig. 7). However, according to a letter from P. J. Dar- 

 lington, Jr. (1952), who compared an inked wing drawing (prepared 

 by the author) with the female t3^pe of horealis, the following points 

 were noted: Vein Mj present, but faint; crossveins r-m and m-cu 

 absent and vein M2 short. This suggests a wing venation similar to 

 that shown for eugonatus (pi. 4, fig. 18) except that vein Mj is more 

 complete in the type specimen. Two specimens (IcT, 19) out of 

 some 35 examined appeared to be horealis, but each had a very weak 

 vein Ml and crossvein m-cu; hence, this species was keyed out twice 

 in the key presented above. 



