IOO SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 5 1 



A specimen of this series sent to Dr. K. Kertesz, at Budapest, was 

 returned by him as Argyrophylax galii Brauer and von Bergen- 

 stamm. As galii has the male vertex one and one-third times the 

 eye width and female vertex twice the eye width, this can not be 

 that species. Two specimens sent to Dr. A. Handlirsch, at Vienna, 

 •were returned as unknown to him, and indicated with a query as 

 American. 



Female. — Fourteen specimens. Twelve bred at the Gipsy Moth 

 Parasite Laboratory. North Saugus, Massachusetts, as follows: Five 

 bred by E. S. G. Titus, in 1906, from Euproctis clirysorrluva im- 

 ported from Germany (Baden and Dresden, received from Marie 

 Ruhl and Schopfer, respectively ) : seven bred by W. F. Fiske, in 

 1907, from summer importations of Euproctis clirysorrluva from 

 Germany. Two bred at Simferopol, Russia, by S. Mokschetsky, 

 from Euproctis clirysorrluva, June 10, 1905, and July, 1907. 



Length. 7 to 8 mm. Differs from the male as follows: Thickly 

 yellowish-cinereous pollinose all over, including front and- first ab- 

 dominal segment. Face more silvery. Thoracic vittae fine, outer 

 ones broken at suture and somewhat widened. Scutellum yellowish 

 on margin. Middle fronto-orbital bristles two in number. Front 

 from more than one-third to about two-fifths width of head, hardly 

 narrowed from facial width. Abdominal macrochaetae same as male, 

 but the second segment rarely has four median marginal macro- 

 chaetae more or less well developed from the long marginal hairs on 

 each side of the original pair. Hind tibiae sparsely but distinctly 

 ciliate, a long" bristle near middle. Four sternopleural and four 

 postsutural bristles. 



A specimen of this series sent to Dr. K. Kertesz was returned un- 

 determined ; another sent to Dr. A. Handlirsch was returned as 

 unknown to him, and probably American. The two sexes were not 

 suggested by either Kertesz or Handlirsch as belonging together, 

 but it seems highly probable that they are the same species. Both 

 are positively European, as conclusively demonstrated not only by 

 the breeding records of the Gipsy Moth Parasite Laboratory, but 

 also by Mr. Mokschetsky's breeding of both at Simferopol, Russia. 



Types. — Cat. No. 11,803, U. S. N. M. (2 types: male from Nieder- 

 Oesterreich, issued July 20. 1907: female from Central Europe, 

 issued July 10, 1907). 



Mr. W. F. Fiske has bred this species (male specimens) from 

 cages containing hibernated larvae of Euproctis chrysorrha?a under 

 circumstances indicating that the female tachinids oviposit in the 

 Euproctis nests in the fall, the tachinid larvae remaining through the 

 winter in the nests and issuing from the host larvae or pupae in the 



