32 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 61. 



12. MICROGASTER FACETOSA Weed. 



Microgaster facctosa Weed, Trans. Amor. Ent. Soc, vol. 15, 1888, p. 296. 

 Microgaster (Diolcogaster) solidaginis Yiekeck. Bull. Conn. State Geol. 

 and Nat. Hist. Survey., 1917 (1916), p. 202. 



Type. — Two specimens, at least one of them, labeled "Type 2," 

 belonging to Weed's type series of two specimens, are in the United 

 States National Museum. The type of soUdaginis is in the collection 

 of the Connecticut Agricultural Experiment Station at New Haven. 



This species is extremely variable both as to color and sculpture. 

 The mesonotum, propodeum and first three abdominal tergites are 

 strongly roughened in the female, but usually much less so in the 

 male; the female normally has considerable testaceous coloring on the 

 third and fourth tergites; while in the male rarely more than a 

 narrow transverse band along the posterior margin of third tergite 

 is testaceous, and frequently the dorsum is wholly black. 



Illinois; Connecticut; Tennessee; Ohio; Maryland; Pennsylvania; 

 Michigan; Colorado; Kansas; New York; Massachusetts; Vermont; 

 New Hampshire; Maine; Washington; British Columbia; and On- 

 tario, Canada. 



Host. — Plathypena scdbra Fabricus. 



In addition to the type material mentioned above I have seen many 

 specimens from diverse localities. In the National Collection there 

 are, besides the two specimens which are apparently Weed's types, 

 eight specimens reared by C. C. Hill, in the Bureau of Entomology, 

 under Webster No. 8337, from Plathypena scahra, at Nashville, 

 Tennessee; eight others reared from the same host, by the same 

 worker, at Knoxville, Tennessee; one specimen from Wooster, Ohio ; 

 one from Fort Washington, Maryland; one from Agricultural Col- 

 lege, Michigan; several specimens from the C. F. Baker Collection, 

 taken in Pennsylvania, Michigan, Colorado, Kansas, and Canada; 

 and two specimens reared by H. L. Parker, July, 1915, from Plathy- 

 pena scaira, at Hagerstown, Maryland. In the collection of the Bos- 

 ton Society of Natural History there is one specimen collected by 

 Mr. C. W. Johnson at Jaffrey, New Hampshire. Doctor Brues's col- 

 lection at Harvard University contains specimens from Blue Hills 

 and Woods Hole, Massachusetts; Mount Constitution and Index, 

 Washington; Dummerston, Vermont; Calais, Maine; and Lake Mc- 

 Donald, Glacier Park, Montana ; and in the Cornell University Col- 

 lection there are specimens from the following localities: Slater- 

 ville, Caroline, Hartford, Freeville, Rock City, West Danby, and 

 Waterville, in New York State; Woods Hole, Massachusetts; Wau- 

 bamic, Ontario ; and Carbonate, British Columbia. 



