88 MISC. PUBLICATION 17 4, U.S. DEPT. OF AGKICULTURE 



writer has been assured by L. O. Howard that these specimens were 

 originally received from Lindeman himself and that the label is in 

 Lindeman's handwriting. Howard believes that they represent a 

 part of Lindeman's type material. These specimens have been com- 

 pared with Ashmead's types of Baeotomus eoxalis comprising 1 

 female and 4 male specimens and have been found to agree perfectly. 

 The specimens of both Lindeman and Ashmead seem to fit the 

 description of Eupteromalus arvensis Kurdjumov in every particular. 

 Kurdjumov states that he found specimens of arvensis among Linde- 

 man's types of Merisus intermedins, but for some reason he failed to 

 recognize these as belonging to the variety microptei v a>s, which he did 

 not mention. There seems to be no doubt that both eoxalis and 

 arvensis are identical with micropterus; and since the Lindeman 

 name is the oldest, the species should be known as Eupteromalus 

 micropterus ( Lindeman ) . 



This species is not a synonym of Meraporus graminicola Walker, 

 as treated by Blunck. The type of graminicola which the writer saw 

 in the British Museum in 1927 differs from micropterus by having an 

 immargined occiput, a 5- jointed funicle, and a propodeum which is 

 short and without a distinct neck at the apex. These characters not 

 only separate the species specifically but place them in different 

 genera according to the present understanding of Pteromalidae. 



The National Museum possesses one additional female of this 

 species received from T. Cheviroff, Leningrad (St. Petersburg), 

 Russia. This was originally mounted on the same pin with the 

 specimen elsewhere referred to in this paper as Meraporus crassicornis 

 Kurdjumov. Both species had been originally identified by someone 

 as Ceraphron destructor Say. 



In addition to the above-noted European material there are in the 

 National Museum collection two females and several males which 

 appear to be thoroughly typical representatives of micropterus and 

 which bear the label " Wooster, Ohio." These specimens have proved 

 very puzzling. They carry the identification label " Merisus destruc- 

 tor Say ", and on one pin is the label " C. destructor ", indicating that 

 they were reared from the hessian fly. It is believed that they were 

 originally obtained by F. M. Webster about 1890 to 1900, but their 

 exact history cannot now be definitely traced. Of the many hun- 

 dreds of specimens since reared from the fly in North America, none 

 seems to agree exactly with these specimens. It seems incredible, if 

 this species was actually established in America many years ago, that 

 it should not have been again reared. For this reason, also because 

 Webster is known to have received samples of hessian-fly parasites 

 from abroad, the writer is inclined to question whether these speci- 

 mens were actually reared from material collected in Ohio. It seems 

 possible that they may be European specimens which have been 

 wrongly labeled. 



The species described in this paper as Eupteromalus americanus, 

 new species, is extremely similar to micropterus, and at one time 

 specimens of it were identified by the writer as that species, this 

 identification forming the basis for the use of that name by C. M. 

 Packard in 1928. 13 At that time, and because of the above-mentioned 

 Ohio specimens, micropterus Lindeman was believed to be present 



13 Packard, C. M., U.S. Dept. Agr. Tech. Bui. 81 : 14, 1928. 



